Signal Analyzer Packs The Power For Advanced RF/Microwave Design

June 21, 2004
The design and manufacture of advanced RF and microwave communications systems, including wireless local-area networks (WLANs) and 3G/4G cell phones, require as much power and sophistication as engineers can achieve. To help in the quest, the MS2781A...

The design and manufacture of advanced RF and microwave communications systems, including wireless local-area networks (WLANs) and 3G/4G cell phones, require as much power and sophistication as engineers can achieve. To help in the quest, the MS2781A Signature signal analyzer offers the spectrum and signal-analysis tools for the job. Developed by Anritsu, the tool features spectrum-analyzer performance as well as digital modulation analysis from 100 Hz to 8 GHz.

An optional 30-MHz-resolution bandwidth permits the capture, measurement, and analysis of wide modulation bandwidth signals. The instrument's architecture provides an open Windows XP environment, which Anritsu calls a first for a signal analyzer, so popular simulation and analysis tools can be easily integrated into the analyzer.

One key element behind the instrument's high performance is a 9.5- to 17.5-GHz synthesized first local oscillator and a 9.5-GHz IF. This fundamental mixing approach lets designers measure the entire 100-Hz to 8-GHz range in one sweep without band-switching or pre-selection.

Total intermodulation distortion is 23 dBm, displayed average noise level is −147 dBm, and amplitude accuracy is 0.65 dB over the entire frequency range. For digital modulation analysis, the analyzer optionally obtains measurements for error vector magnitude, carrier leakage, and I/Q imbalance, all without a separate computer and post processing. The instrument presents a WCDMA adjacent channel power ratio of 80 dB and a 2% error vector magnitude rating.

Additionally, users can easily design new or proprietary digital modulations by adding the MatLab Connectivity option. It offers live update viewing of MatLab-processed results with measurements.

The MS2781SA costs $49,500, and the GPIB interface (option 3) costs $600. A 30-MHz IF bandwidth (option 22) costs $27,000. QPSK/PSK modulation measurements (option 35) cost $8000. And, MatLab Connectivity (option 40) costs $1000. All are available within 16 weeks.

Anritsu Co.www.us.anritsu.com (408) 778-2000

See associated figure

Comments

To join the conversation, and become an exclusive member of Electronic Design, create an account today!