(RF, Microwave, and Wireless Components)
From this Article:
Following LNAs importance in the communication system chain, it is very important to simulate their performance well at a system level design. A system level design may comprise of many discrete as... (View Full Article)
(Diodes)
From this Article:
Radio transceiver designers have searched for a low cost solution to replace expensive mechanical switches and relays to direct high power transmit signals to the antenna and prevent that signal from... (View Full Article)
(RF, Microwave, and Wireless Components)
From this Article:
A 5 GHz CMOS LNA featuring a record 0.95 dB noise-figure is reported. Using an inductively-degenerated cascode topology combined with floating-body transistors and high-Q passives on an SOI substrate,... (View Full Article)
(RF, Microwave, and Wireless Components)
From this Article:
Modern set-top TV DBS tuner systems require more channel coverage, while maintaining competitive prices. This situation creates tough design goals: to improve performance and simplify design. Balanced... (View Full Article)
(Transistors)
From this Article:
A comprehensive non-linear PHEMT core model for switch applications is described. The model combines an accurate description of CV below pinch-off and a 2D CV function above pinch-off for better... (View Full Article)
(RF, Microwave, and Wireless Components)
From this Article:
Many of today's handset cellular telephones are multifunctional, multiband units. They are complex RF systems with frequency plans requiring multiple RF sources. To accomplish this, the number of VCOs... (View Full Article)
(Power Supply and Conditioning)
From this Article:
This article describes the design of a very high linearity, wideband intermediate frequency (IF) amplifier. The design has a very flat gain response and most of the circuit components are integrated.... (View Full Article)
(RF, Microwave, and Wireless Components)
From this Article:
Radio transceiver designers are always faced with a dilemma: how to direct the high power transmit signal to the antenna, prevent that signal from entering the sensitive front end of the local... (View Full Article)
(Transistors)
From this Article:
A common photolithography requirement is to generate a slope in a developed resist pattern prior to etch. To generate the sloped profile the resist is either exposed out of focus, hard baked after... (View Full Article)
(Power Supply and Conditioning)
From this Article:
Charge pump regulators provide an excellent DCI'DC converter solution for low-power portable applications, typically below 300mA output curreni Charge pumps provide enhanced etficiency when compared... (View Full Article)
(Optoelectronics)
From this Article:
Directional couplers are used for output power detection and control in both WCDMA and GSM/EDGE Power Amplifier (PA) Front End Modules (FEM). At high values of load VSWR, delivered power shows... (View Full Article)
(Power Supply and Conditioning)
From this Article:
This paper presents a novel hardware reconfiguration technique implemented in a dual integrated-circuit (IC) GaAs HBT power amplifier (PA) design and demonstrates reduced current and improved... (View Full Article)
(IC Interface Devices)
From this Article:
Device design and process strategies improving the circuit thermal stability by lowering the device junction temperature, while minimizing the device thermal resistance, are examined. We investigate... (View Full Article)
(Communication IC)
From this Article:
The term fractional-N describes a family of synthesizers that allow the minimum frequency step to be a fraction of the reference frequency. Over the years, a number of methods have been proposed to... (View Full Article)
(Power Supply and Conditioning)
From this Article:
Many of today's MP3 players, multimedia players, digital video recorders, and other portable electronic devices have found the micro hard disk drive to be the optimum device for memory storage... (View Full Article)
(Communication IC)
From this Article:
The growth of low power, cost effective wireless systems is driving more applications to use ZigBee protocol. While for some of them, the signal needs to propagate over a short range, when covering a... (View Full Article)
(Capacitors)
From this Article:
A capacitance and RF-conductance/RFtransconductance look-up table based large-signal pHEMT model is presented based on an ensemble of bias-dependent small-signal equivalent circuits. The model is... (View Full Article)
(Communication IC)
From this Article:
developed in recent years for next generation mobile handsets and tablets applications. Designers face new and greater challenges due to more stringent requirements in functionality, performance, size... (View Full Article)
(Communication IC)
From this Article:
Modern smart phones and tablet computers typically incorporate multiple wireless services at different frequency bands ranging from FM radio to LTE. At the same time, an increasing number of designs... (View Full Article)
(Carbides, Ceramics and Glass Materials)
From this Article:
The split collector resistance is a specialized in line process control monitor (PCM) test used to determine device performance in GaAs HBT processing. It is the resistance measured between two... (View Full Article)
(Communication IC)
From this Article:
To meet the overwhelming demand for high data rate mobile applications, 3GPP long-term evolution (LTE) is quickly developing around the world as a major step forward in cellular technology. In... (View Full Article)
(Electrical, Optical, and Specialty Materials)
From this Article:
Reliable metrology data such as layer thickness and composition measured by X-ray diffraction (XRD), sheet resistance measured by Eddy current, and qualitative pHEMT epi parameters measured by... (View Full Article)
(IC Interface Devices)
From this Article:
Copper (Cu) interconnects have been quite successful in Silicon micro-circuits but limited in compound semiconductor fabrication. Low resistivity, inertness to most wet chemicals and suitability for... (View Full Article)
(RF, Microwave, and Wireless Components)
From this Article:
For the implementation of RF tunable components, semiconductor based varactors provide advantages in terms of low control voltage, high capacitance density, low packaging costs, high reliability and... (View Full Article)
(RF, Microwave, and Wireless Components)
From this Article:
The PIN diode finds wide usage in RF, UHF and microwave circuits. It is fundamentally a device whose impedance, at these frequencies, is controlled by its DC excitation. A unique feature of the PIN... (View Full Article)
(Communication IC)
From this Article:
Modern high-performance radio/microwave communications systems utilize digital baseband signal processing (coupled with complex up/down conversion), where very little of the signal processing is... (View Full Article)
(RF, Microwave, and Wireless Components)
From this Article:
Amplifiers used in wireless infrastructure receiver applications have the key requirements of low noise, high linearity, and unconditional stability. In order to meet these needs, Skyworks has... (View Full Article)
(RF, Microwave, and Wireless Components)
From this Article:
The differential pair of bipolar transistors is the common building block in modern RF integrated circuits. An advantage of this architecture is its high loop gain making it popular for differential... (View Full Article)
(Capacitors)
From this Article:
Due to their small size, beam-lead devices are fragile and should be handled with extreme care. The individual plastic packages should be handled and opened carefully, so that no undue mechanical... (View Full Article)
(Communication IC)
From this Article:
Commercial RF/microwave integrated circuits (RFICs) were establishing a credible toehold at the time, to the extent that the prevailing conventional wisdom held that discrete RF semiconductors were on... (View Full Article)
(Transistors)
From this Article:
With increasing scale and complexity in phemt switch circuits and dimension shrinking in unit phemt switch devices, distributed effects are becoming crucial on insertion loss and harmonics, especially... (View Full Article)
(Communication IC)
From this Article:
This paper is an investigation of the feasibility of applying a mechanically flexible magnetic composite material to radio frequency identification (RFID) planar antennas operating in the lower... (View Full Article)
(Capacitors)
From this Article:
Thin silicon nitride (Si3N4) films deposited using plasma-enhanced chemical deposition (PECVD) method have been used as metal-insulator-metal (MIM) capacitor dielectric for GaAs hetero-junction... (View Full Article)
(Electrical, Optical, and Specialty Materials)
From this Article:
In compound semiconductor manufacturing, metallized wafers are put through a wet strip process in Nmethyl pyrrolidone (NMP) to dissolve the photoresist, liftoff the unwanted metals, and to form the... (View Full Article)
(Transistors)
From this Article:
Good ohmic metal contact is crucial for optimum device performance for Heterojunction Bipolar Transistors (HBT) and pseudomorphic High Electron Mobility Transistors (pHEMT). Erosion of Gallium... (View Full Article)
(Optoelectronics)
From this Article:
Adaptive Digital Predistortion (DPD) is applied to a spec-compliant class-AB GaAs HBT PA module for WCDMA handsets. It is shown that, by using a re-optimized load line, the efficiency can be increased... (View Full Article)
(Electrical, Optical, and Specialty Materials)
From this Article:
Gold (Au) nodule defects are a common problem during metal deposition by evaporation. Small Au spheres, often referred to as spits in the semiconductor industry, can be ejected from the molten source... (View Full Article)
(RF, Microwave, and Wireless Components)
From this Article:
Skyworks conducts ESD testing at both the device and system levels. These tests are based on the requirements outlined in: ? ESD Association 2.0 Handbook - Human Body Model (HBM) - Charged Device... (View Full Article)
(RF, Microwave, and Wireless Components)
From this Article:
This paper proposes a solution that employs transistor self-conduction and circuit design techniques to improve ESD performance for SOI RF switch applications. The primary limitations and challenges... (View Full Article)
(RF, Microwave, and Wireless Components)
From this Article:
To increase production capacity, improve the performance of existing processes, and to introduce new, more advanced process technologies, processes must be evaluated using electrical tests. PCM's are... (View Full Article)
(Power Supply and Conditioning)
From this Article:
The fi rst offi cial shift in communication systems from fi xed-location devices to portable/ mobile devices happened in 1973 when Martin Cooper, general manager of Motorola's Communications Systems... (View Full Article)
(RF, Microwave, and Wireless Components)
From this Article:
The IEEE Std 802.15.4TM-2003 [2] sets the requirements for the -85 dBm one percent packet error ratio (PER) minimum sensitivity. The 2.4 GHz receiver link uses offset quadrature phase-shift keying... (View Full Article)
(Communication IC)
From this Article:
A fully integrated front-end IC is demonstrated for 802.11b/g transceivers with integrated power amplifiers. The SP3T-LNA architecture integrates Bluetooth® functionality with transmit and... (View Full Article)
(Transistors)
From this Article:
Gallium arsenide MESFETs are being used in RF control device applications as switches and attenuators.They are very easily adapted to monolithic circuit form, dissipate essentially no power and can... (View Full Article)
(RF, Microwave, and Wireless Components)
From this Article:
A comprehensive nonlinear model of GaAs resistor is developed based on DC, pulse and power measurements. The model accounts for electrical and thermal feathers such as velocity saturation,... (View Full Article)
(Power Supply and Conditioning)
From this Article:
GaAs HBT technologies currently dominate the wireless handset PA marketplace due to their proven RF performance, time-to-market, and size advantages compared to other technologies. As with any... (View Full Article)
(Diodes)
From this Article:
Handling Precautions for Schottky Barrier Mixer and Detector Diodes... (View Full Article)
(Transistors)
From this Article:
Reliable and reproducible epitaxy (epi) materials are critical to the success of a high volume compound semiconductor fabrication line. An efficient epi matching and qualification procedure among... (View Full Article)
(Power Supply and Conditioning)
From this Article:
Today, radio communications are interwoven into almost every facet of modern life: increasingly our telephonic communications are wireless, whether by cellular telephone networks, by ISM-band portable... (View Full Article)
(Transistors)
From this Article:
Developing rugged transistors requires careful consideration of the HBT's collector design. In this work we present a test methodology for high-volume, in-line measurement of device ruggedness. This... (View Full Article)
(Electrical, Optical, and Specialty Materials)
From this Article:
Exceptional performance of a manufacturing facility doesn't just happen. It requires effective management of all the various factors, constraints and resources. One important aspect of management is... (View Full Article)
(Power Supply and Conditioning)
From this Article:
A unique over-voftage protection (OVP) circuit is presented for use with the AAT123I, an inductive boast con stant current wtute LED driver.. The circuit allows transition from constant current to... (View Full Article)
(RF, Microwave, and Wireless Components)
From this Article:
Today's broadband communications use high order modulation transmission scheme that provide higher spectrum efficiency but with a high crest factor [1,2]. As a result, a linear power amplifier (PA) in... (View Full Article)
(Electrical, Optical, and Specialty Materials)
From this Article:
Multiple factors need to be considered when selecting an interlevel dielectric material for GaAs semiconductor device fabrication including what the electrical, mechanical, chemical, thermal, and cost... (View Full Article)
(Transistors)
From this Article:
Modern InGaP/GaAs heterojunction bipolar transistors (HBT) demonstrate excellent microwave and high-speed performance due to high carrier mobility and bandgap engineering. They have found a niche in... (View Full Article)
(Communication IC)
From this Article:
RF/microwave design can be challenging, to say the least. Even with the impressive advances in computer aided design (CAD) software of the past three decades, the fact remains that CAD simulations are... (View Full Article)
(RF, Microwave, and Wireless Components)
From this Article:
The RF designer who toils to produce a working system or end product, such as the radio transceiver in a cellular telephone handset or WLAN access point router, has become a "black box" integrator who... (View Full Article)
(Communication IC)
From this Article:
This paper presents the large-signal model requirements and generation as well as the 1- and 2-tone large-signal characterization for CMOS PA applications. The sensitivity of important parameters to... (View Full Article)
(Transistors)
From this Article:
Accurate modeling of large-signal behavior of power amplifiers (PAs) is key in minimizing the number of design spins and design cycle time. This paper presents the 1- and 2-tone large-signal behavior... (View Full Article)
(Power Supply and Conditioning)
From this Article:
The design highlight of a power amplifier (PA) for 3G and beyond handset applications is to maximize its power-added efficiency (PAE) with specified linearity requirement at both peak and back-off... (View Full Article)
(RF, Microwave, and Wireless Components)
From this Article:
An overview is given for the current state-of-the-art of semiconductor based tunable RF elements. For this purpose, semiconductor based capacitive switch banks and varactors are reviewed and compared... (View Full Article)
(Communication IC)
From this Article:
This application note describes the design and performance of a VCO centered at 1750 MHz for a PCS handset that uses the SMV1763-079 varactor diode. This low R varactor was designed specifically for... (View Full Article)
(Communication IC)
From this Article:
Long Term Evolution (LTE) provides a high data rate, high quality and low cost solution for the cellular industry facing an overwhelming increase in mobile data traffic. Beginning with an overview of... (View Full Article)
(RF, Microwave, and Wireless Components)
From this Article:
One of the most important capabilities of a radio receiver is its ability to reliably detect very weak RF signals. The circuits of a radio receiver inevitably generate electrical noise, which may mask... (View Full Article)
(RF, Microwave, and Wireless Components)
From this Article:
In addition to the actual test sequence, stable low noise figure measurements require careful attention to the equipment selection, laboratory setup, environmental conditions and calibration... (View Full Article)
(Carbides, Ceramics and Glass Materials)
From this Article:
During the MBE growth process of a pHEMT structure, the growth of buffer layer and superlattice generally take more than 70 percent of the overall resources and time. This paper focuses on the... (View Full Article)
(IC Interface Devices)
From this Article:
This straightforward approach shows how to match the impedances of high-frequency, differential devices both with discrete components and microstrip circuit elements.... (View Full Article)
(RF, Microwave, and Wireless Components)
From this Article:
Differential signaling is the primary choice for a low power RF interconnection because it provides superior immunity to noise by offering twice the signal swing for a given supply voltage. The out of... (View Full Article)
(Electroceramics)
From this Article:
Low cost processes, in both GaAs and Silicon, often use non-planar interconnect metals. While very efficient in simplifying processes, seam (more commonly called "crack") formation due to inter-level... (View Full Article)
(Power Supply and Conditioning)
From this Article:
Directional couplers are used in GSNI/EDGE and 3G power amplifier front end modules (PA F EMs) for radiated power detection and control. The radiated power varies with load VSWR. There are analyses on... (View Full Article)
(Diodes)
From this Article:
Most people who use diodes are more familiar with junction devices than with the surface barrier diodes commonly used in mixer and detector circuits. In a junction diode the rectifying junction is... (View Full Article)
(RF, Microwave, and Wireless Components)
From this Article:
This paper presents the modeling of an SOI FET for RF switch applications. Given that the HF smallsignal predictability, i.e. the insertion loss and the isolation, is a common state of the art, the... (View Full Article)
(Optoelectronics)
From this Article:
A novel approach for extracting scalable linear hemt model is proposed. scaling rules with unknown coefficients are assumed for each model parameter, which correlated model parameters among different... (View Full Article)
(Capacitors)
From this Article:
The HBT ledge thickness and quality is vital for device performance and reliability. In this work we report on a measurement technique and test structure for monitoring the emitter passivation ledge... (View Full Article)
(Power Supply and Conditioning)
From this Article:
Battery-powered apaiions thai operate in sleep mcxie for an extended amount of lime require goI efii ciency at light load and heavy load. While conductbn losses associated with the RD.1 of the wer MOS... (View Full Article)
(Power Supply and Conditioning)
From this Article:
Output voltage ripple is always an important performance parameter with DC-DC converters. For inductor-based switching regulators, several key factors can affect this important parameter, including... (View Full Article)
(Carbides, Ceramics and Glass Materials)
From this Article:
This paper reviews how six sigma methodology principles and total preventive maintenance (TPM) drains analysis have been utilized to increase overall equipment effectiveness (OEE) on the metal... (View Full Article)
(Power Supply and Conditioning)
From this Article:
This Application Note provides PCB design guidelines for high power dissipation packages that ensure adequate solder coverage and optimize heat transfer. As a general rule, high power dissipation... (View Full Article)
(RF, Microwave, and Wireless Components)
From this Article:
Base stations use phase locked loop (PLL) systems to generate either RF or IF local signals to up-convert baseband signals to RF signals or vice versa. There are different ways of integrating PLL... (View Full Article)
(RF, Microwave, and Wireless Components)
From this Article:
A PIN diode is essentially a variable resistor. To determine the value of this resistance, consider a volume comparable to a typical PIN diode chip, say 20 mil diameter and 2 mils thick. This chip has... (View Full Article)
(Diodes)
From this Article:
I n military radios, private land mohile radios and cel lular hase station failsafe switch systems, high power RF switching has been the prov ince of ceramic-packaged PIN diodes for decades. Recently,... (View Full Article)
(Diodes)
From this Article:
Dry etch plays a very important role in fabrication of modern IIIV compound semiconductor devices. Compared to wet chemical etch, dry etch, which uses reactive gas plasma to remove substances... (View Full Article)
(Electrical, Optical, and Specialty Materials)
From this Article:
Plating thickness uniformity can become increasingly difficult to control when migrating from four inch to six inch wafers, especially when plating through-wafer vias with non-cyanide gold bath... (View Full Article)
(Communication IC)
From this Article:
Power control architectures for mobile handsets can be categorized into two main groups, Direct and Indirect detection. Indirect power detection takes advantage of relationships between DC... (View Full Article)
(Communication IC)
From this Article:
* Bipolar Power Amplifier Biasing Techniques * Control Characteristics of Bias Techniques * Power Control Methods * Indirect Power Control Characteristics * Direct Power Control Characteristics *... (View Full Article)
(Communication IC)
From this Article:
Direct detection architectures can sample the amplifier output directly but will suffer from similar VSWR inaccuracy that was observed in the indirect architectures. Often a directional coupler is... (View Full Article)
(Transistors)
From this Article:
With increasing scale and complexity in pHEMT circuit and dimension shrinking in unit pHEMT devices, distributed effects are becoming more crucial than ever. During the design of amplifiers, precise... (View Full Article)
(Communication IC)
From this Article:
Over the past decade, III-V devices, and modules containing them, have dominated the market for RF front end electronics in mobile handsets. GaAs-based hetero-junction bipolar transistors (HBTs) have... (View Full Article)
(RF, Microwave, and Wireless Components)
From this Article:
In the last two decades, the wireless industry has undergone tremendous change. Today more people use a mobile phone as their primary communication vehicle than a traditional landline. At last count,... (View Full Article)
(RF, Microwave, and Wireless Components)
From this Article:
Smart phones represent the leading edge of RF personal communications, as well as one of the most challenging of RF product designs. These third-generation (3G) cellular multimode, multiband devices... (View Full Article)
(Communication IC)
From this Article:
Advanced cell phone architectures require high performance multi-throw RF switches. Reliably measuring the very low RF power levels of the third harmonic signal of these switches is a significant... (View Full Article)
(RF, Microwave, and Wireless Components)
From this Article:
Solid state switches are ubiquitous in modern RF/microwave systems. They are utilized to control signal flows, select signal sources and for many other applications. These switches are implemented... (View Full Article)
(Power Supply and Conditioning)
From this Article:
As switching frequency and switching speeds continue to increase, special care should be taken to ensure accurate measurement of input and output voltage ripple in switch mode DCIDC power supplies... (View Full Article)
(Diodes)
From this Article:
Schottky diodes have been used for several decades as the key elements in frequency mixer and RF power detector circuits. In 1938 Walter Schottky, the son of German mathematician Friedrich Schottky,... (View Full Article)
(Electrical, Optical, and Specialty Materials)
From this Article:
Six-sigma methodologies lead to understanding of root causes of yield loss in the back-end process. A datadriven decision making process is used to allocate resources and to optimize process flows. As... (View Full Article)
(Capacitors)
From this Article:
The Skyworks Capacitor model for ESD applications is described and discussed. A Skyworks ESD Capacitor is modeled as an ideal capacitor in parallel with a leakage current source, along with a resistor... (View Full Article)
(RF, Microwave, and Wireless Components)
From this Article:
An integral part of modern RF/microwave circuit design is circuit simulation and evaluation in which scattering parameters (S-parameters) for each element of a system are utilized to predict the... (View Full Article)
(Alternative Power Generation)
From this Article:
Consumers' demand for and use of electrical energy is very nearly chaotic anarchy. If we had an infinite supply of accessible energy, this would present no significant problems, but we all know that... (View Full Article)
(Electrical, Optical, and Specialty Materials)
From this Article:
Assembly of a surface mount device depends on many process material and equipment parameters. Two of the most common processes used are infrared (IR) and convection reflow. Skyworks products come in... (View Full Article)
(RF, Microwave, and Wireless Components)
From this Article:
In part 1 we discussed an overview of RF/microwave switch topologies, PIN diode theory of operation, and some simple PIN diode switch implementations. In part 2 we will discuss more complex PIN diode... (View Full Article)
(RF, Microwave, and Wireless Components)
From this Article:
With steady growth forecasted for the foreseeable future, Skyworks Solutions has developed a number of products specifically designed for radar markets, including materials for phase shifter... (View Full Article)
(RF, Microwave, and Wireless Components)
From this Article:
Smart phones owe some of their multimode, multiband capabilities to multithrow antenna switches. As mobile handsets evolve, a single antenna switch may handle as many as 10 transmit (Tx) and/or... (View Full Article)
(Power Supply and Conditioning)
From this Article:
When a step-down converter shares a common input voltage with other devices, the input noise generated by the step-down converter may be sufficient to cause interference with the other devices. Simple... (View Full Article)
(RF, Microwave, and Wireless Components)
From this Article:
A well-structured quality system can become the foundation of a successful organization (see Figure 1). This mechanism allows business processes to be predictable, repeatable and provides a means to... (View Full Article)
(IC Interface Devices)
From this Article:
This Application Note provides sample PCB land pattern dimensions for a variety of leaded and leadless packages. These drawings conform with the Surface Mount Design and Land Pattern Standard... (View Full Article)
(Communication IC)
From this Article:
IMT-2000, International Mobile Technology-2000, is the thirdgeneration technology standard developed by the International Telecommunications Union (ITU) for global mobile communications. The spectrum... (View Full Article)
(RF, Microwave, and Wireless Components)
From this Article:
Designing an accurate digital step attenuator (DSA) with outstanding RF/microwave performance requires careful attention to detail and knowledge of semiconductor process variables.... (View Full Article)
(Electrical, Optical, and Specialty Materials)
From this Article:
THE USE OF several strategies to monitor and improve the overall effectiveness of a quality management system is included in ISO 9001, paragraph 8, "Measurement Analysis and Improvement."1 Two of... (View Full Article)
(RF, Microwave, and Wireless Components)
From this Article:
The diagrams within this Application Note provide information regarding tape materials, dimensions, adherence to industry standards, and part numbers for placing orders. Carrier tape diagrams are... (View Full Article)
(Diodes)
From this Article:
The incessant drive to miniaturize electronic systems places pressure on semiconductor manufacturers to offer ever-smaller components. This trend is rapidly approaching its logical conclusion, which... (View Full Article)
(RF, Microwave, and Wireless Components)
From this Article:
The state of technology in electronics has advanced at an ever-increasing pace, and the RF/microwave segment of this market is no exception. We deal with this technology every day, and many of those... (View Full Article)
(Communication IC)
From this Article:
Literature and popular culture abound with predictions: "voice recognition software will make computer keyboards obsolete by 2009," "vehicles with internal combustion engines will be obsolete by... (View Full Article)
(Diodes)
From this Article:
Many electronic systems must be tuned through the variation of reactance of one or more circuit elements. In these applications it is often desirable to perform this tuning under electronic rather... (View Full Article)
(RF, Microwave, and Wireless Components)
From this Article:
Power amplifiers (PAs) are a critical functional block in today's wireless communications. They are found in every cell phone, cordless phone, RF remote controller, etc. Any application requiring the... (View Full Article)
(RF, Microwave, and Wireless Components)
From this Article:
In the past few years, wireless local area networks (WLANs) have been blooming around the world as the infrastructure of office and home communication. The increasing demand has motivated the... (View Full Article)
(Diodes)
From this Article:
A varactor diode is a P-N junction diode that changes its capacitance and the series resistance as the bias applied to the diode is varied. The property of capacitance change is utilized to achieve a... (View Full Article)
(RF, Microwave, and Wireless Components)
From this Article:
In this application note, two VCO designs applicable for 2.4-2.5 GHz WLAN transceiver functions were demonstrated. It was shown that an RF VCO with a large tuning sensitivity (about 150 MHz/V) could... (View Full Article)
(Electrical, Optical, and Specialty Materials)
From this Article:
Business Intelligence (BI) is a relatively new concept that has received a tremendous amount of coverage in recent manufacturing publications. The use of an integrated knowledge base in establishing... (View Full Article)
(RF, Microwave, and Wireless Components)
From this Article:
Along with the explosive growth of smart phones, a new wave of the mobile device development is on the way, in which the WiFi enabled cellular phone has been taking an extremely important position.... (View Full Article)
(Power Supply and Conditioning)
From this Article:
In this paper, we present a discussion and comparison of CMOS and GaAs HBT technologies for handset power amplifiers. Our perspective is unique to other comparisons in that we actually have products... (View Full Article)
(RF, Microwave, and Wireless Components)
From this Article:
Radio transceiver designers have searched for a low cost solution to replace expensive mechanical switches and relays to direct high power transmit signals to the antenna and prevent that signal from... (View Full Article)
(RF, Microwave, and Wireless Components)
From this Article:
A highly integrated SiGe BiCMOS PA is presented that enables the emerging high throughput 802.11ac WLAN applications. The PA has two stages for the g-band and three stages for the a-band PA, and... (View Full Article)
(Diodes)
From this Article:
A capacitance and Current look-up table based large-signal Phemt-diode model is presented based on an ensemble of bias-dependent small-signal equivalent circuits. The model is capable of accurate... (View Full Article)
(Capacitors)
From this Article:
Hafnium dioxide (HfO2) and aluminum oxide (Al2O3) films have been deposited using atomic layer deposition (ALD) method and have been evaluated and used as metal-insulator-metal (MIM) capacitor... (View Full Article)
(Capacitors)
From this Article:
This Letter presents an analytical expression for the capacitance of a curved patch capacitor whose electrodes conform to the curvature of a long, homogeneous, cylindrical dielectric rod. The... (View Full Article)
(Transistors)
From this Article:
Base resistance is an important parameter for bipolar transistor performance and modeling. It can be calculated from simple inputs: base sheet resistance, geometries, and contact metal characteristic... (View Full Article)
(RF, Microwave, and Wireless Components)
From this Article:
In communications systems, Low Noise Amplifiers (LNAs) amplify weak signals received by the antenna. Their applications extend from wireless infrastructure systems to satellite communications. For... (View Full Article)
(Transistors)
From this Article:
Spike-doped collector designs have recently been studied in both Si BJT and GaAs HBTs as a way to improve the device linearity while still maintaining ruggedness. In this work, we present and discuss... (View Full Article)
(Transistors)
From this Article:
Characterization was performed on the application of atomic layer deposition (ALD) of hafnium dioxide (HfO2) and aluminum oxide (Al2O3), and plasma-enhanced chemical vapor deposition (PECVD) of... (View Full Article)
(RF, Microwave, and Wireless Components)
From this Article:
Skyworks' new SKY67151-396LF e-mode pHEMT low noise amplifier (LNA) sets a new standard for low noise figure (NF) for frequencies from 700 - 3800 MHz, while also delivering the gain and linearity... (View Full Article)
(Uncategorized)
From this Article:
In this paper, we introduce the RDS system used by Skyworks' design community to perform tasks.... (View Full Article)
(RF, Microwave, and Wireless Components)
From this Article:
Even with today's increasing levels of RF integration, there remain countless applications for discrete amplifier design including intermediate frequency (IF) amplifier chains at a few hundred MHz,... (View Full Article)
(Transistors)
From this Article:
In this paper we present a method to separate the impact of feature size variation and material/gate etch variation in field effect transistors (FETs) manufactured in our BiFET process. The key to... (View Full Article)
(Communication IC)
From this Article:
This paper presents a set of closed-form analytical expressions to approximate the transient solution to the heat equation without requiring any computationally intensive series summation. The... (View Full Article)
(RF, Microwave, and Wireless Components)
From this Article:
This paper presents new formulations, together with an ef?cient computer-aided test approach intended for radio frequency integrated circuit power ampli?ers (PAs), allowing the estimation of linearity... (View Full Article)
(RF, Microwave, and Wireless Components)
From this Article:
This paper presents a methodology to characterize and model BJT's mismatch behavior for RFIC design. A measurement technique based on the conventional S-parameter measurement is developed to measure... (View Full Article)
(Optoelectronics)
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Recent development of new products has given rise to stringent requirements for precision deposition control of thin metal films. Enhancement mode (E-mode) pHEMT devices require a very thin layer of... (View Full Article)
(RF, Microwave, and Wireless Components)
From this Article:
Presented is the performance of a highly integrated RF single-pole double-throw (SPDT) switch fabricated in a 0.18 ?m bulk CMOS process and housed in a low-cost laminated multi-chip module (MCML)... (View Full Article)
(RF, Microwave, and Wireless Components)
From this Article:
To amplify weak signals received by the antenna in communication systems, low noise amplifiers (LNAs) are deployed. LNAs are used in various applications, for example in, GPS receivers, wireless data... (View Full Article)
(RF, Microwave, and Wireless Components)
From this Article:
Low Noise Amplifiers (LNAs) amplify weak signals received by the antenna in communication systems. Every wireless system module typically consists of one or several LNAs. Applications include GPS... (View Full Article)
(Diodes)
From this Article:
In today's complex circuits used in wireless applications, multiple turn-on voltage diodes are desired for added design flexibility. In this work we report a novel Schottky diode with a lowered... (View Full Article)
(RF, Microwave, and Wireless Components)
From this Article:
Skyworks has successfully developed a manufacturing-friendly circulator with industry leading insertion loss performance. The SKYFR-000827 operates in the frequency band 2300MHz to 2400MHz and has a... (View Full Article)
(Electrical, Optical, and Specialty Materials)
From this Article:
Low cost processes, in both GaAs and Silicon, often use non-planar interconnect metals. While very efficient in simplifying processes, seam (more commonly called 'crack') formation due to inter-level... (View Full Article)
(RF, Microwave, and Wireless Components)
From this Article:
This paper presents a new approach for extracting a scalable DC HEMT model. Scaling rules with unknown coefficients are assumed for each size dependent parameter, and the model parameter of different... (View Full Article)
(Transistors)
From this Article:
Multi-gate pHEMTs are extensively used in pHEMT switch circuits for wireless communication applications due to their size advantage. The intuitive modeling approach which considers a multiple-gate... (View Full Article)
(RF, Microwave, and Wireless Components)
From this Article:
The insertion loss of the output circulator of a power amplifier is critical. It is estimated that every 0.1dB of insertion loss at the power amplifier output costs >3W of RF power further up the... (View Full Article)
(RF, Microwave, and Wireless Components)
From this Article:
An innovative SOI SP5T switch-LNA integrated circuit is presented. The switch-LNA consists of a diplexer that provides out-of-band rejection and enables dual-band concurrent operation, a dual-band LNA... (View Full Article)
(RF, Microwave, and Wireless Components)
From this Article:
-The effective capacitance of variable reactors (varactors) can be modulated by the magnitude of applied RF signals, resulting in troublesome detuning issues in resonators constructed with these... (View Full Article)
(RF, Microwave, and Wireless Components)
From this Article:
In recent years, CMOS on Silicon-on-Insulator has rapidly evolved as a mainstream technology for switches used in wireless applications. Since such applications can involve switching high power... (View Full Article)
(Transistors)
From this Article:
While complementary FETs are routinely available in BiCMOS processes, the successful integration of HBTs with complementary FETs has not been reported. In this work, we demonstrate a material... (View Full Article)
(RF, Microwave, and Wireless Components)
From this Article:
This paper will discuss new advanced WiFi system and related new design requirements on the power amplifiers.... (View Full Article)
(Transistors)
From this Article:
Traditionally, the on-state breakdown of pHEMTs is attributed to impact ionization and thermal breakdown under high Vd stress. Nonetheless, neither of these hypotheses perfectly explains all... (View Full Article)
(RF, Microwave, and Wireless Components)
From this Article:
Power collapse and related hysteresis have been observed for pHEMT switch in its on state when the input power is swept in a certain power range. The abnormal high power behavior can be explained in... (View Full Article)
(RF, Microwave, and Wireless Components)
From this Article:
Featured in the February 2014 issue of RF Globalnet.... (View Full Article)
(RF, Microwave, and Wireless Components)
From this Article:
In this letter, the in?uence of the RF voltage swing on the effective capacitance of continuously tunable capacitive devices, e.g., varactors, is investigated. Using Volterra series, equations are... (View Full Article)
(RF, Microwave, and Wireless Components)
From this Article:
The purpose of this article is to help designers of receiver products select the optimal low noise amplifier (LNA) for their particular application.... (View Full Article)
(Transistors)
From this Article:
Temperature dependent model is conventionally developed with 1) individual linear model extraction at each temperature and 2) temperature dependence extraction for each model parameter. A novel... (View Full Article)
(Semiconductors)
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The following article examines the impact of current business, technology, and international trends in the semiconductor industry, and anticipates future challenges and opportunities for intellectual... (View Full Article)
(RF, Microwave, and Wireless Components)
From this Article:
At high frequencies class-E power amplifiers operation is limited by the device drain parasitics so that truetransient operation is not possible, hence harmonic approximation is used based upon the... (View Full Article)
(Uncategorized)
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A Q and A with David Aldrich, president and CEO of Skyworks Solutions.... (View Full Article)
(RF, Microwave, and Wireless Components)
From this Article:
Skyworks has successfully developed the world's smallest stripline junction isolator. The junction size of the SKYFR-000727 is only 10 millimeters (mm) in diameter and has a footprint of less than 144... (View Full Article)