The Rohde & Schwarz SMR20 is a microwave signal generator delivering 10 MHz to 20 GHz frequency coverage for RF and microwave component testing, system integration, and laboratory calibration. The instrument combines broad frequency range with high signal purity, low phase noise, and flexible modulation to support development and validation of RF systems across commercial, defense, and industrial applications.
Technical Specifications
Frequency Range
• Base model: 1 GHz to 20 GHz
• With Option B11 extension: 10 MHz to 1 GHz (extends lower limit)
• Frequency resolution: 1 kHz standard; 0.1 Hz with Option B3
• Frequency switching time: +10 dBm at 20 GHz
• Minimum (standard): -20 dBm
• Minimum (with Option B17): -130 dBm
• Frequency-response-compensated control for levels above -20 dBm
Signal Purity
• Low SSB phase noise via fractional-N frequency synthesis
• High spurious suppression through advanced synthesis architecture
• Excellent harmonics suppression from modern microwave output filters
– Key Features
Modulation & Sweep
• Standard CW with pulse modulation and digital frequency sweep
• Optional AM/FM and LF generator (Option B5)
• Optional synthesized sweep generator with analog ramp sweep (Option B4)
• Maximum ramp sweep rate: 600 MHz/ms for frequencies >2 GHz
• 10 user-selectable frequency markers for RF sweep
• Sweep modes: Automatic, singleshot, manual, externally triggered
• All modulation modes combinable—pulse+FM for Doppler/chirp simulation; AM+pulse for pulse radar; FM+AM for fading effects
• Optional ASK/FSK modulation and pulse generator for radar/EMC
• Optional IF upconversion for digitally modulated IF signals
Physical & Maintenance
• Output connector: 3.5 mm female
• 3-year calibration cycle for low cost of ownership
– Typical Applications
RF and microwave component development, receiver testing, radar signal simulation, EMC compliance testing, and system-level validation requiring precise frequency synthesis and simultaneous modulation.
