The Rohde & Schwarz FSW43 is a high-performance signal and spectrum analyzer spanning 2 Hz to 43.5 GHz, with extension to 110 GHz via external harmonic mixers. Built for aerospace, defense, and communications applications, it delivers exceptional phase noise performance and dynamic range for characterizing wideband components, developing precision oscillators, and testing complex communication systems. The analyzer provides internal analysis bandwidth up to 5 GHz, real-time analysis to 800 MHz, and I/Q demodulation bandwidth configurable from 10 MHz to 160 MHz. A multitouch display and parallel measurement applications streamline demanding RF analysis tasks.
Technical Specifications
Frequency Coverage
• Base: 2 Hz to 43.5 GHz (DC coupled); 10 MHz to 43.5 GHz (AC coupled)
• Extended: Up to 110 GHz with external harmonic mixers
Analysis Bandwidth
• Internal analysis: Up to 5 GHz
• Real-time analysis: Up to 800 MHz
• Signal analysis: 2 GHz standard; up to 4400 MHz with FSW-B4001 option
• I/Q demodulation: 10 MHz (28 MHz, 40 MHz, 80 MHz, or 160 MHz with options)
Phase Noise Performance
• At 10 kHz offset, 1 GHz carrier: typ. –137 dBc (1 Hz)
• At 10 kHz offset, 10 GHz carrier: typ. –128 dBc (1 Hz)
• At 100 Hz offset: typ. –114 dBc (1 Hz)
Displayed Average Noise Level (DANL)
• 2 GHz: typ. –156 dBm (1 Hz); up to –169 dBm (1 Hz) with noise cancellation and preamplifier
• 8 GHz: typ. –156 dBm (1 Hz); –169 dBm (1 Hz) with FSW-B24 preamplifier
• 20 GHz: typ. –150 dBm (1 Hz)
• 40 GHz: typ. –144 dBm (1 Hz); –165 dBm (1 Hz) with FSW-B24 preamplifier
Dynamic Range & Linearity
• WCDMA ACLR (with noise cancellation): 88 dB
• Spurious-free dynamic range: 60 dBc
• Third-order intercept: +30 dBm (< 1 GHz), +25 dBm (< 3 GHz), +17 dBm (8–26 GHz), +15 dBm (13.6–40 GHz)
Resolution Bandwidth
• Standard: 1 Hz to 10 MHz; up to 80 MHz with FSW-B8 option
– Key Features
• Unmatched phase noise for oscillator and radar measurements
• Noise cancellation improves DANL by up to 13 dB
• Multitouch display with parallel measurement execution
• Configurable I/Q demodulation and signal analysis bandwidth
– Typical Applications
• Wideband component characterization
• High-performance oscillator development
• Complex communication system testing
• Radar and communications oscillator measurements
– Compatibility & Integration
Bandwidth and noise performance options scale with FSW-B series modules for signal analysis, I/Q demodulation, preamplification, and resolution filtering.
