Rohde and Schwarz SGT100A SGMA Vector RF Source, 1 MHz to 3 GHz RF

The Rohde & Schwarz SGT100A SGMA is a vector RF source engineered to generate complex modulated signals from 1 MHz to 3 GHz. Built for automated production test environments, it delivers high signal quality with flexible modulation capabilities in a compact 1 HU, ½ 19" form factor. Fast frequency and level setting times maximize test throughput while maintaining phase coherence and spectral purity across demanding modulation scenarios.

Technical Specifications

• Frequency range: 1 MHz to 3 GHz (extendable to 6 GHz with R&S SGT-KB106 option)


• Output level (CW mode, AUTO setting): −120 dBm to +17 dBm


• Maximum output level (typical): +22 dBm


• REF/LO output: +6 dBm to +12 dBm (typical 9 dBm)


• Output impedance: 50 Ω nominal


• Harmonics (≤8 dBm CW): <−30 dBc


• SSB phase noise at 1 GHz (20 kHz offset): <−126 dBc (typical −133 dBc)


• SSB phase noise at 2 GHz (20 kHz offset): <−120 dBc (typical −127 dBc)


• SSB phase noise at 6 GHz (20 kHz offset): <−110 dBc (typical −117 dBc)


• Phase drift over temperature (between two LO coupled instruments): 0.4° typical per +1 °C at 6 GHz, +10 dBm Modulation Capabilities


• I/Q modulation bandwidth: up to 160 MHz or 240 MHz in RF


• Integrated baseband generator


• Pulse modulation: internal generator (R&S SGT-K22 option) or external trigger


• Pulse delay resolution: 10 ns


• External trigger delay jitter: <20 ns


• GSM/EDGE support (R&S SGT-K240): 400 MHz to 2000 MHz, phase error <0.4° RMS (MSK, BT=0.3)


• 3GPP FDD support (R&S SGT-K242): 1800 MHz to 2200 MHz, EVM 68 dB at 5 MHz offset

Key Features

• Dual modulation paths: I/Q and external analog


• Pulse/video output: LVTTL (3.3 V nominal) on USER2 connector


• GSM burst on/off ratio: 100 dB measured


• 3GPP ACLR >70 dB at 10 MHz offset (typical 73 dB)


• Pulse double delay range: 40 ns to 100 s at 10 ns resolution

Typical Applications

• Production test of GSM/EDGE handsets and infrastructure


• 3GPP FDD device validation and receiver testing


• Pulse modulation characterization


• Phase-coherent multi-instrument test setups

Compatibility & Integration Optional OCXO (R&S SGT-B1) improves phase noise performance. Extended frequency coverage to 6 GHz available with KB106 module.