The Rohde & Schwarz SMB100B RF Signal Generator delivers precise signal generation across multiple frequency bands from 8 kHz to 40 GHz, with extension to 170 GHz via the R&S®SZM frequency multiplier. Engineered for R&D, production, and service environments, this instrument combines excellent signal purity with flexible modulation and wide dynamic range in a compact platform.
Technical Specifications
Frequency Coverage
RF variants span 8 kHz to 1 GHz, 3 GHz, or 6 GHz. Microwave variants extend to 12.75 GHz, 20 GHz, 31.8 GHz, or 40 GHz. Frequency multiplier option enables operation to 170 GHz.
Signal Purity
SSB phase noise reaches -134 dBc at 1 GHz (20 kHz offset, 1 Hz bandwidth) and better than -112 dBc at 10 GHz (20 kHz offset). Wideband noise measures -153 dBc typical at 1 GHz (30 MHz offset) and below -145 dBc across frequency ranges. Harmonic suppression exceeds -55 dBc above 2 GHz at full output power. Non-harmonic suppression is -82 dBc at 1 GHz and -64 dBc at 10 GHz.
Output Power
Standard output reaches +26 dBm from 1 MHz to 6 GHz, with +20 dBm typical to 12.75 GHz and +18 dBm to 20 GHz. Maximum power climbs to 34 dBm at 1 GHz, 25 dBm at 20 GHz, and 19 dBm at 40 GHz. Optional high-power configuration delivers +28 dBm at 1 GHz or +24 dBm to 20 GHz. Minimum level is -127 dBm (frequencies above 10 MHz), yielding 153 dB dynamic range.
Level Accuracy
Accuracy stays below 0.5 dB from 200 kHz to 3 GHz at levels exceeding -90 dBm, and below 0.7 dB above 3 GHz at the same power threshold.
– Key Features
• Amplitude, frequency, and phase modulation standard
• Pulse modulation with optional pulse generator and pulse train capabilities (single, double, configurable sequences)
• Internal stereo modulation modes
• Optional external reference input (1 MHz to 100 MHz) or 1 GHz reference I/O for multi-instrument phase coherence
• OCXO and high-performance OCXO options for improved frequency stability and temperature tracking
• USB control interface
• 50 Ω RF output
– Typical Applications
Component and module characterization, receiver testing, transmitter verification, production alignment, and service-level signal generation across microwave bands.
– Compatibility & Integration
Standard USB connectivity enables instrument control. Optional reference frequency modules support phase-locked operation in multi-generator test systems. Modular architecture accommodates customer-selected frequency bands and output power configurations.
