Rohde & Schwarz FSUP26 20Hz – 26.5GHz Spectrum Analyzer

The Rohde & Schwarz FSUP26 is a signal source analyzer that combines spectrum analysis, signal source characterization, and phase noise measurement in a single instrument. Operating from 20 Hz to 26.5 GHz in spectrum analyzer mode and 1 MHz to 26.5 GHz in signal source analyzer mode, it delivers the specialized measurements required for oscillator and synthesizer development, RF communications testing, and radar signal analysis. External mixers extend capability to 110 GHz.

Technical Specifications

• Spectrum Analyzer: 20 Hz to 26.5 GHz


• Signal Source Analyzer: 1 MHz to 26.5 GHz


• Extended range to 110 GHz with external mixers Phase Noise & Oscillator Characterization:


• Phase noise measurement via Spectrum Analyzer Method, PLL Method (with or without cross-correlation), Two-DUT Method, and Residual Phase Noise Measurement


• AM Noise and Baseband Noise measurement


• Tuning slope, transient response, and power measurements


• Harmonics and spurious emissions analysis


• VCO parameter characterization


• Amplifier noise, noise figure, and gain measurement (Option K30) Dynamic Range & Sensitivity:


• Maximum dynamic range through cross-correlation


• Cross-correlation improves dynamic range by up to 20 dB at 26 GHz


• Amplitude range: DANL to +30 dBm


• Phase noise sensitivity at 1 GHz: –128 dBc at 10 kHz offset (internal reference, internal phase detector)


• Typical noise floor: 8–13 GHz < –159 dBm (typ. –162 dBm); 13–18 GHz < –157 dBm (typ. –160 dBm); 18–22 GHz < –154 dBm (typ. –157 dBm) Resolution & Analysis:


• Resolution bandwidth: 10 Hz to 50 MHz


• Frequency resolution: 0.01 Hz


• Signal analysis for digitally and analog modulated signals


• Support for GSM/EDGE, Bluetooth, CDMA2000, 1xEV-DO standards


• Interference detection, suppression, and listing Internal Sources:


• Low-noise DC outputs for supply and tuning voltages


• Integrated DC sources enable extended measurement capabilities

Key Features

• Unified platform eliminates multiple instrument requirements


• Cross-correlation reduces phase noise floor and extends dynamic range


• Sensitivity with internal reference exceeds –128 dBc at 10 kHz offset


• Sub-10 Hz resolution bandwidth for fine spectral detail

Typical Applications

• Oscillator and synthesizer characterization and optimization


• Phase noise and spectral purity assessment


• Digital and analog modulated signal analysis


• Amplifier gain and noise figure measurement


• Interference identification and mitigation


• VCO tuning and transient response evaluation