A signal analyzer employs digital techniques to extract useful information that is carried by an electrical signal. In common usage the term is related to both spectrum analyzers and vector signal analyzers. While spectrum analyzers measure the amplitude or magnitude of signals, a signal analyzer with appropriate software or programming can measure any aspect of the signal such as modulation. Today's high-frequency signal analyzers achieve good performance by optimizing both the analog front end and the digital back end.


Anritsu's Mobile Wireless Signal Analyzers are the very latest high-performance signal analyzers for next-generation communication applications.

Keysight Technologies Inc.

Choose from an extensive selection of real-time spectrum analyzer and signal analyzer products from DC to 50 GHz and extendable to 325 GHz and beyond with external mixers, for your spectrum analysis measurements. Accurately measure frequency, amplitude and modulation including distortion, spurious, phase noise, and 2G to 4G wireless communication signals. Combine your spectrum analyzer or signal analyzer with 89600 VSA software, flexible modulation analysis software or measurement applications and you can demodulate a broad range of standard-based and general-purpose digital signals and formats. The upgradable real-time spectrum analyzer capabilities ensure that you see, capture, and understand the most elusive signals - known or unknown.

Rohde & Schwarz

Since 1986, Rohde & Schwarz has offered innovative signal and spectrum analyzers whose unique characteristics enable them to redefine the current state-of-the-art again and again.

SAF North America LLC

Every aspect of SAF's Spectrum Compact series of hand-held spectrum analyzers (300 MHz - 86 GHz) and signal generators (6 GHz - 40 GHz) has been designed with field use in mind, including a resistive touchscreen for operation with gloves, beefy thumbscrews for SMA and waveguide connections, and high-contrast and fill display modes for easy readability in bright light situations. The 8 GB of memory allows you to save thousands of spectrum traces for offline analysis, investigation, and reporting using the included PC software. Spectrum Compact devices are irreplaceable when performing site survey, radio parameter verification, antenna alignment, interference detection, line-of-sight verification and interference hunting.