Rohde & Schwarz FSWP26 Phase Noise Analyzer

The Rohde & Schwarz FSWP26 Phase Noise Analyzer combines high-end signal and spectrum analysis with dedicated phase noise characterization across 1 MHz to 26.5 GHz. This instrument delivers ultra-precise measurements with phase noise sensitivity to –172 dBc (1 Hz) at 1 GHz and 10 kHz offset, making it essential for oscillator, synthesizer, VCO, OCXO, and DRO development—particularly in radar and other demanding applications requiring exceptional phase stability verification.

– Technical Specifications

• Frequency Range: 1 MHz to 26.5 GHz (base unit); up to 50 GHz, 56 GHz with external LO inputs, or 500 GHz with external harmonic mixers
• Phase Noise Sensitivity: Typically –172 dBc (1 Hz) at 1 GHz, 10 kHz offset; typically –153 dBc to –158 dBc (1 Hz) at 10 GHz, 10 kHz offset; up to 25 dB improvement with cross-correlation
• Displayed Average Noise Level (DANL): –156 dBm (1 Hz) standard; below –165 dBm (1 Hz) with internal preamplifier; approaching –174 dBm (1 Hz) theoretical limit with noise cancellation
• Signal Analysis Bandwidth: 80 MHz or 320 MHz
• Measurement Uncertainty: < 0.2 dB to 3.6 GHz; < 0.3 dB to 8 GHz
• Phase Noise Offset Range: Up to 300 MHz for phase noise; up to 1 GHz for pure noise measurement
• Frequency Hop Analysis: Up to 8 GHz wide transients
• Internal Signal Source: 10 MHz to 18 GHz (model dependent)

– Key Features

• Cross-correlation measurement of amplitude and phase noise simultaneously, including pulsed signals
• Rapid phase noise measurement on highly stable sources—results in seconds
• Low-noise internal DC sources and automatic VCO characterization capability
• High sensitivity measurements with optional noise cancellation and preamplifier configurations

– Typical Applications

• Oscillator and synthesizer development and manufacturing
• VCO, OCXO, and DRO characterization
• Radar system component verification
• Transient and frequency hop analysis

– Compatibility & Integration

External harmonic mixers and LO inputs enable operation to 500 GHz and 56 GHz respectively. Internal signal source performance exceeds most standalone generators in phase noise specifications.