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GlobalSpec Special Edition
Components for RF & Microwave
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Vector-receiver Load Pull Measurements

Measurement-based characterization (e.g., load-pull) plays a key role in the design process when discrete component integration, component interconnect and matching-circuit design are involved. Recent improvements in nonlinear device measurement have greatly enhanced load-pull characterization, which in turn impacts RF board-level circuit design, particularly for power amplifiers using discrete transistors. This paper from Microwave Journal highlights improvements in device characterization that have been enabled by new vector-receiver load-pull systems, over older scalar techniques using calibrated automated load pull tuners.

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Aerospace Technology

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Power Amplifier Solutions for Military Applications
CAP Wireless, Inc.

CAP Wireless broadband power amplifier solutions are especially well-suited for military electronic defense and satellite communication applications such as electronic warfare (EW) systems, radar and communication systems, laboratory instrumentation, electromagnetic compatibility and interference (EMC/EMI) testing, radar, microwave imaging, and satellite and terrestrial communications systems. Visit us here for more information!

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Tektronix Offers LLC for 30-GHz MMICs

{sec1_editem1_img1_alt} Device-level packaging is often a limiting factor in the performance of high-speed and high-frequency components. Intended to house monolithic microwave integrated circuit (MMIC) or high-bandwidth ASIC dice designed for wire bonding, the 64-pad surface-mount leadless chip carrier (LLC) provides a packaging platform for devices used in 40-100 Gbps telecommunications, unmanned aerial vehicles, radar, and instrumentation applications.

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RF/Microwave Materials for Interference Control
Emerson & Cuming Microwave Products, Inc.

Eccosorb® provides interference control for cavity resonance reduction, free space applications including insertion loss and reflectivity reduction, as well as products used for termination loads. Materials are available as flexible foams, elastomers, and rigid polymers spanning a frequency range from 600 MHz to 75 GHz. Visit here for your complimentary Sample Tube Kit.

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Flexible RF Cable


Temp-Flex Cable, Inc.

Engineers searching for high speed data cables are pleased with the patented high purity FEP fluoropolymer dielectric extruded around the center conductor. Consistent mechanical tolerances yield extremely consistent electrical performance. The high bandwidth, low capacitance cables have a low dissipation factor and are tested to 20 Ghz.

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New LNAs Good Through 3 GHz

{sec1_editem1_img1_alt} Wireless infrastructure applications usually bring to mind large-signal circuitry and power amplifiers. However, there are infrastructure applications ranging from base stations to repeaters and the small cells used to extend wireless service to building interiors (such as in shopping malls)that can benefit from the performance of small-signal low-noise amplifiers (LNAs). A pair of new LNAs from Skyworks Solutions, based on GaAs pseudomorphic high-electron- mobility-transistor (pHEMT) technology, is suitable for this class of applications.


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Download TriQuint's Latest Mobile Device Brochure
TriQuint Semiconductor, Inc.

Building a mobile device? Choose TriQuint as your innovative RF partner. Our highly-integrated solutions offer many benefits:
• Extended battery life enabled by optimized electrical interfaces
• Superior thermal and electrical performance
• Smaller solutions size
• Reduced BOM

Download our 2011 mobile device brochure.

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Mouser Delivers Bluetooth Module with Antenna

Mouser Electronics, Inc.

Panasonic EC PAN 1325 RF module provides easily integrated Bluetooth® connectivity into new and current designs by removing RF design and certification barriers from the application. As the newest addition, the PAN1325 also features best in class Bluetooth RF performance in a tiny 85.5 mm2 footprint.

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MMIC-based VGAs for Wireless Infrastructure

{sec1_editem1_img1_alt} Two new variable-gain amplifiers (VGAs) from Hittite Microwave Corp. feature CMOS/TTL-compatible digital gain control and a noise figure of 4 dB in any gain state. The devices, housed in RoHS-compliant 5 mm x 5 mm QFN leadless packages, require no external matching circuits. The company is aiming the devices, which cover the frequency range from 500 MHz to 6 GHz, at applications in automotive, broadband, cellular/3G, WiMAX/4G, test and measurement equipment, and military hardware.

Updated RF/Microwave Design and Simulation Platform

{sec1_editem1_img1_alt} Agilent Technologies has released Advanced Design System 2011 (ADS 2011), a multi-technology RF and microwave design and simulation platform which the company claims is a significant breakthrough in electronic design automation. The company says it has worked with foundries and relevant SMD component vendors and has gained their support for ADS 2011. The new release is backward-compatible, so users need to download and install only the desired kit, independent of which ADS release they are using.

Advances in GaN HEMT Technology

{sec1_editem1_img1_alt} A team from HRL Laboratories claims record-breaking performance for GaN high electron mobility transistors (HEMTs) it grew in gallium nitride (GaN). These transistors, which have gate lengths as short as 40 nm, produce a peak cut-off frequency of 220 GHz and a maximum oscillation frequency of 400 GHz, HRL reports. Other significant performance figures include extremely low on-resistance and an off-state breakdown voltage is 42 V.

New RF4CE Chips for Remote Control

{sec1_editem1_img1_alt} In anticipation of widespread supplanting of infrared-based consumer electronics remote controls by RF-based systems, GreenPeak Technologies has introduced three new controller chips aimed specifically at that application area. The three chips have full RF4CE (“RF for Consumer Electronics”) functionality and embedded ZigBee remote control (ZRC) protocol. The company claims the chips are optimized against interference from Blutetooth and WiFi signals, both of which can be present in the CE user environment.

Surface-Mount Limiters for Radar Receiver Protection

{sec1_editem1_img1_alt} The front ends of radar receivers, particularly those in military systems, need to be protected from high-power inputs that could cause damage. Diode limiters are effective components in this type of application, especially when combined with ferrite, Tr- tube or pre-Tr tube components. Aeroflex /Metelics has introduced a series of diode limiters for L- S- and C-band systems with power-handling capability of 100 W continuous and 2 kW peak.

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April 1, 2011 - Volume 6 Issue 5
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