USB Spectrum Analyzers and Signal Analyzers
Last Updated: April 1, 2025
Description
USB Spectrum Analyzers and Signal Analyzers are devices used to analyze the electrical signals passing through or being transmitted by a system or device. They provide a visual representation of the magnitude of the Fourier transform of input signals, mapping time-domain signals into the frequency domain as a set of sines and cosines. These analyzers are essential tools for observing and measuring signal levels and distortions, offering insights into signal stability, distortion, amplitude, and modulation quality.
Working Principle
The working principle of USB Spectrum Analyzers and Signal Analyzers involves the transformation of time-domain signals into the frequency domain using the Fourier transform. This process allows the analyzers to display the amplitude versus frequency of a given signal source. By examining these characteristics, users can determine the performance of a device, identify problems, and troubleshoot effectively. The ability to quickly view wide spectrum widths and zoom in on signals of interest makes these analyzers invaluable in both research and development and manufacturing settings.
Applications
USB Spectrum Analyzers and Signal Analyzers are widely used in various fields. In communications, they help analyze modulated signals to ensure proper transmission of voice or data. They are also crucial in testing nonlinear devices like amplifiers or mixers, where understanding distortion products is essential. Additionally, these analyzers are used to locate and analyze interference problems in RF communication, making them indispensable tools for technicians and engineers working in crowded spectrum environments.
Advantages over other Spectrum Analyzers and Signal Analyzers
USB Spectrum Analyzers offer several advantages over traditional spectrum analyzers. They are typically more portable and cost-effective, making them accessible to a broader range of users, including those who may not justify the expense of high-end equipment. The integration of digital technology and digital signal processing in modern analyzers enhances their capabilities, allowing for more precise and versatile measurements. These analyzers can also be easily connected to computers, facilitating data access and complex measurements.
Limitations
Despite their advantages, USB Spectrum Analyzers have limitations. They may not offer the same frequency range, sensitivity, and dynamic range as more advanced superheterodyne spectrum analyzers. Additionally, while they are suitable for many applications, they might not be ideal for high-frequency or highly sensitive measurements, where more specialized equipment is required.
Considerations
When considering USB Spectrum Analyzers, it is important to evaluate initial costs, operating expenses, and durability. While they are generally more affordable than high-end analyzers, users should consider the specific requirements of their applications to ensure the chosen device meets their needs. Accuracy and maintenance costs are also crucial factors, as regular calibration and potential repairs can impact long-term expenses.
from Siglent Technologies NA, Inc.
SIGLENT SHA850A, a handheld portable spectrum analyzer and cable-and-antenna analyzer, is a powerful and flexible tool for those field and outdoor RF applications. With a frequency range up to 7.5 GHz, the analyzer delivers reliable automatic measurements and multiple modes of operation. A spectrum... [See More]
- Host Connection: USB; GPIB (IEEE 488, HPIB)
- Analyzer Type: Instrument
- Special Instrument Type: Portable
- Test Type: Modulation
from Uni-Trend US
The UNI-Trend UTS1015B Advanced-Series Spectrum Analyzer is an affordable 1.5GHz signal analyzer for a variety applications. [See More]
- Host Connection: USB; Ethernet
- Frequency Range: 9 to 1.50E6
from DigiKey
9kHz ~ 1.5GHz Vector Network Analyzer (VNA) Spectrum Analyzer -200 ~ 30dBm Features Hold, Max, Min, Ave, USB Port Includes [See More]
- Host Connection: USB
- Dynamic Range: -200 to 30
- Frequency Range: 9 to 1.50E6
from Siglent Technologies NA, Inc.
The SIGLENT SSA5000A spectrum analyzers are powerful and flexible tools for complex RF spectrum and signal analysis. With the capability of real-time spectrum analysis, the analyzer can provide multi-dimensions data displays, and advanced triggering to solve modern RF spectrum challenges, like... [See More]
- Host Connection: USB; GPIB (IEEE 488, HPIB)
- Analyzer Type: Instrument
- Special Instrument Type: Portable
- Test Type: Modulation
from Uni-Trend US
The UNI-Trend UTS1015T Advanced-Series Spectrum Analyzer includes a tracking generator and is an affordable 1.5GHz signal analyzer for a variety applications. [See More]
- Host Connection: USB; Ethernet
- Frequency Range: 9 to 1.50E6
from DigiKey
9kHz ~ 1.5GHz Vector Network Analyzer (VNA) Spectrum Analyzer -200 ~ 30dBm Features Hold, Max, Min, Ave, USB Port Includes [See More]
- Host Connection: USB
- Dynamic Range: -200 to 30
- Frequency Range: 9 to 1.50E6
from Uni-Trend US
The UNI-Trend UTS1032B Advanced-Series Spectrum Analyzer is an affordable 3.2GHz signal analyzer for a variety applications. [See More]
- Host Connection: USB; Ethernet
- Frequency Range: 9 to 3.20E6
from DigiKey
9kHz ~ 1.5GHz Vector Network Analyzer (VNA) Spectrum Analyzer -200 ~ 30dBm Features Hold, Max, Min, Ave, USB Port Includes [See More]
- Host Connection: USB
- Dynamic Range: -200 to 30
- Frequency Range: 9 to 1.50E6
from Uni-Trend US
The UNI-Trend UTS1032T Advanced-Series Spectrum Analyzer includes a tracking generator and is an affordable 3.2GHz signal analyzer for a variety applications. [See More]
- Host Connection: USB; Ethernet
- Frequency Range: 9 to 3.20E6
from DigiKey
9kHz ~ 1.5GHz Vector Network Analyzer (VNA) Spectrum Analyzer DANL ~ +20dBm Features Hold, Max, Min, Ave, USB Port Includes [See More]
- Host Connection: USB
- Dynamic Range: ? to 20
- Frequency Range: 9 to 1.50E6
from Uni-Trend US
The UNI-Trend UTS3015T+ Performance-Series Spectrum Analyzer includes a tracking generator and is an affordable 1.5GHz signal analyzer for EMI pre-compliance testing and a variety of other applications. Offers VSWR reflection measurement capability. [See More]
- Host Connection: USB; Ethernet
- Frequency Range: 9 to 1.50E6
from DigiKey
9kHz ~ 3.2GHz Vector Network Analyzer (VNA) Spectrum Analyzer -161dBm Features Hold, Max, Min, Ave, USB Port Includes [See More]
- Host Connection: USB
- Dynamic Range: -161
- Frequency Range: 9 to 3.20E6
from Uni-Trend US
The UNI-Trend UTS3021B Performance-Series Spectrum Analyzer is an affordable 2.1GHz signal analyzer for EMI pre-compliance testing and a variety of other applications. [See More]
- Host Connection: USB; Ethernet
- Frequency Range: 9 to 2.10E6
from DigiKey
50kHz ~ 3GHz Spectrum Analyzer Spectrum Analyzer -9 ~ -14dBm Features USB Port Includes AC Adapter, Cable [See More]
- Host Connection: USB
- Frequency Range: 50 to 3.00E6
- Special Instrument Type: Handheld
- Dynamic Range: -14 to -9
from Uni-Trend US
The UNI-T UTS3036A signal analyzer enables electrical and RF engineers to quickly diagnose and resolve complex signal issues with real-time spectrum analysis and advanced features like vector network and EMI analysis. Its high precision and wide frequency range streamline troubleshooting, optimize... [See More]
- Host Connection: USB; Ethernet
- Frequency Range: 9 to 3.60E6
from DigiKey
50KHz ~ 960MHz, 2.35GHz ~ 2.55GHz Spectrum Analyzer Spectrum Analyzer -125 ~ 10dBm Features Hold, Max, Ave, USB Port Includes Antennas (Directional and Stick), Battery, Case [See More]
- Host Connection: USB
- Frequency Range: ? to 2.55E6
- Special Instrument Type: Handheld
- Dynamic Range: -125 to 10
from Red Pitaya, d.o.o.
SDRlab 122-16 External clock is based on the SDRlab 122-16 model that is modified to be used with an external clock oscillator, which is important especially for RF applications that operate at other frequencies, require better quality clock or clock synchronization. [See More]
- Host Connection: RS232; RS485 (optional feature); USB; Digital; Ethernet; Radio
- Analyzer Type: Instrument; PC
- Special Instrument Type: Handheld; Portable
- Test Type: Modulation; Distortion; Noise
from Fujian Lilliput Optoelectronics Technology Co., Ltd.
middot; Frequency Range from 9 kHz up to3.6 GHz. · -160dBm Displayed Average Noise Level. · Phase Noise -82dBc/Hz @1Gz and offset at 10KHz. · Total Amplitude Accuracy <1.5dB. · 10Hz Minimum Resolution Bandwidth (RBW). · Standard GPS receiver. · EMI... [See More]
- Host Connection: USB; Ethernet
- Analyzer Type: Instrument
- Special Instrument Type: Handheld
- Test Type: Noise
from Wayne Kerr Electronics
A frequency response analyzer measures the gain and phase response characteristics with respect to frequency of the device or system under test, by applying a frequency swept sine-wave to it and examining its response signal. The FRA5022 supports for measurement frequencies of 0.1 mHz to 100 kHz. [See More]
- Host Connection: USB
- Analyzer Type: Instrument
- Special Instrument Type: Portable
- Frequency Range: 1.00E-7 to 100
from Teledyne LeCroy
Teledyne Test Tools new T3SA3000 family of Spectrum Analyzers offers a frequency range of 9 KHz to either 2.1/3.2 GHz alongside many impressive features. With their light weight, small form factor, and user friendly interface, these Spectrum Analyzers take powerful and reliable automatic... [See More]
- Host Connection: USB
- Analyzer Type: Instrument
- Special Instrument Type: Portable
- Test Type: Distortion
from thinkRF
RELIABLE, HIGH SPEED, UNINTERRUPTED WIRELESS NETWORKS WITH thinkRF R5550. The thinkRF R5550 Real-Time Spectrum Analyzer is built on innovative and highly optimizable software-defined radio technologies that provide more flexibility, greater coverage, and increased functionality. Designed and built... [See More]
- Host Connection: USB; Ethernet
- Analyzer Type: PC
- Special Instrument Type: Portable
- Test Type: Noise
from Kaelus
Passive Intermodulation (PIM) occurs when multiple RF signals encounter defects in materials or workmanship in an RF path. These defects behave like a mixer causing noise to be generated at mathematical combinations of the original carrier frequencies. PIM interference that falls in the receive band... [See More]
- Host Connection: USB
- Analyzer Type: PC
- Special Instrument Type: Fixed
- Test Type: Modulation; Noise
from Fiber Instrument Sales, Inc./FIS
Includes analysis software, carrying case, recharge/ replaceable battery [See More]
- Host Connection: RS232; USB; Modem; Radio
- Analyzer Type: Instrument
- Special Instrument Type: Handheld
- Test Type: Modulation; Distortion; Noise
from Red Pitaya, d.o.o.
SDRlab 122-16 was developed specifically for software-defined radio and more demanding RF applications. [See More]
- Host Connection: RS232; RS485 (optional feature); USB; Digital; Ethernet; Radio
- Analyzer Type: Instrument; PC
- Special Instrument Type: Handheld; Portable
- Test Type: Modulation; Distortion; Noise
from Fujian Lilliput Optoelectronics Technology Co., Ltd.
Frequency range 9kHz - 1.5GHz. - -160 dBm Displayed Average Noise Level (DANL). - Phase noise -80 dBc/Hz @1GHz and offset at 10 kHz. - Total amplitude accuracy <0.7 dB. - 1 Hz minimum resolution bandwidth (RBW). - EMI pre-compliance test kit, optional EMC test software. - Optional tracking... [See More]
- Host Connection: USB
- Analyzer Type: Instrument
- Special Instrument Type: Portable
- Test Type: Modulation; Distortion; Noise
from Wayne Kerr Electronics
A frequency response analyzer measures the gain and phase response characteristics with respect to frequency of the device or system under test, by applying a frequency swept sine-wave to it and examining its response signal. The FRA5087/FRA5097 supports for measurement frequencies of 0.1 mHz to... [See More]
- Host Connection: USB
- Analyzer Type: Instrument
- Special Instrument Type: Portable
- Frequency Range: 1.00E-7 to 15000
from thinkRF
MOBILE RF APPLICATIONS FOR WIRELESS SITUATIONAL AWARENESS WITH thinkRF R5750. The thinkRF R5750 Real-Time Spectrum Analyzer with GPS is built for mobile wireless situational awareness applications such as RF drive testing, coverage mapping, propagation analysis, direction finding & transmitter... [See More]
- Host Connection: USB; Ethernet
- Analyzer Type: PC
- Special Instrument Type: Portable
- Test Type: Noise
from Fiber Instrument Sales, Inc./FIS
Deploying, maintaining, troubleshooting wireless stations & Wi-Fi [See More]
- Host Connection: USB; Ethernet
- Analyzer Type: Instrument
- Special Instrument Type: Handheld
- Test Type: Modulation; Noise
from Red Pitaya, d.o.o.
SIGNALlab 250-12 is most sophisticated Red Pitaya product, built for more demanding industrial applications and research, where robustness and performance matter more than cost. [See More]
- Host Connection: RS232; RS485 (optional feature); USB; Digital; Ethernet; Radio
- Analyzer Type: Instrument; PC
- Special Instrument Type: Handheld; Portable
- Test Type: Modulation; Distortion; Noise
from Fiber Instrument Sales, Inc./FIS
Designed to locate & identify RF cable feed line and antenna system faults [See More]
- Host Connection: RS232; USB; Radio
- Analyzer Type: Instrument
- Special Instrument Type: Handheld
- Test Type: Modulation; Distortion; Noise
from Red Pitaya, d.o.o.
SIGNALlab 250-12 is most sophisticated Red Pitaya product, built for more demanding industrial applications and research, where robustness and performance matter more than cost. [See More]
- Host Connection: RS232; RS485 (optional feature); USB; Digital; Ethernet; Radio
- Analyzer Type: Instrument; PC
- Special Instrument Type: Handheld; Portable
- Test Type: Modulation; Distortion; Noise
from Red Pitaya, d.o.o.
STEMlab 125-14 4 Inputs is based on STEMlab 125-14 board, but instead of 2 inputs and 2 output channels offers 4 Input channels that with improved performance. [See More]
- Host Connection: RS232; RS485 (optional feature); USB; Digital; Ethernet; Radio
- Analyzer Type: Instrument; PC
- Special Instrument Type: Handheld; Portable
- Test Type: Modulation; Distortion; Noise
from Red Pitaya, d.o.o.
STEMlab 125-14 is our most versatile and popular product, which was introduced to the market in 2013 when Red Pitaya was established. Since then it has been used in a wide variety of contexts, from hobbyists and ham radio operators to industry, research, and space applications. [See More]
- Host Connection: RS232; RS485 (optional feature); USB; Digital; Ethernet; Radio
- Analyzer Type: Instrument; PC
- Special Instrument Type: Handheld; Portable
- Test Type: Modulation; Distortion; Noise
from Red Pitaya, d.o.o.
STEMlab 125-14 is our most versatile and popular product, which was introduced to the market in 2013 when Red Pitaya was established. Since then it has been used in wide variety of contexts, from hobbyists and ham radio operators to industry, research and space applications. [See More]
- Host Connection: RS232; RS485 (optional feature); USB; Digital; Ethernet; Radio
- Analyzer Type: Instrument; PC
- Special Instrument Type: Handheld; Portable
- Test Type: Modulation; Distortion; Noise