Rohde and Schwarz FSWP26 Phase Noise Analyzer & VCO Tester, 26.5 GHz

The Rohde & Schwarz FSWP26 is a phase noise analyzer and VCO tester that combines low-noise internal sources with cross-correlation technology for high-sensitivity phase noise measurements across 1 MHz to 26.5 GHz. The instrument delivers DANL of -156 dBm (1 Hz) standard, reducible to near -174 dBm (1 Hz) with noise cancellation, and achieves phase noise performance of -172 dBc (1 Hz) at 1 GHz with 10 kHz offset. Built for wireless communications, aerospace and defense, and component characterization, it integrates signal and spectrum analysis with a 12.1" touchscreen display for simultaneous multi-window viewing.

Technical Specifications

• Frequency Range: 1 MHz to 26.5 GHz


• Analysis Bandwidth: 80 MHz standard; 320 MHz with optional upgrade


• DANL: -156 dBm (1 Hz) without noise cancellation; near -174 dBm (1 Hz) with noise cancellation


• Third-Order Intercept (TOI): Typically 25 dBm


• Phase Noise (Internal Source): -172 dBc (1 Hz) at 1 GHz, 10 kHz offset; -153 dBc (1 Hz) at 10 GHz, 10 kHz offset; less than -166 dBc (1 Hz) at 1 GHz, 10 kHz offset


• Measurement Uncertainty: <0.2 dB to 3.6 GHz; <0.3 dB to 8 GHz


• Display: 12.1" touchscreen

Key Features

• Low-noise internal DC sources for VCO characterization


• Cross-correlation for simultaneous amplitude and phase noise measurement


• Phase noise measurement on pulsed and CW signals


• Additive phase noise measurement capability


• Automatic VCO characterization including harmonics relative to tuning voltage


• Transient analysis of frequency hops up to 8 GHz wide


• Triggering on frequency or phase deviation via real-time demodulation


• Allan variance calculation from phase noise data


• Integrated signal and spectrum analysis

Typical Applications

• Radar source characterization and phase noise analysis


• VCO tuning and performance validation


• Pulsed signal residual phase noise measurement


• Wireless component and subsystem testing


• Frequency hop and transient signal analysis

Compatibility & Integration High measurement speed supports rapid VCO and component characterization workflows. Unified phase noise, spectrum analysis, and VCO test platform reduces bench footprint for aerospace, defense, and wireless production environments.