An RF signal generator produces a stable, precisely controlled radio frequency signal used to test receivers, amplifiers, and wireless components. Unlike a simple oscillator, it allows precise control over frequency, power level, and modulation, making it the reference signal source that every RF test setup is built around.
What makes an RF generator different from a simple oscillator
At the core of an RF signal generator is a high performance oscillator, usually paired with a «frequency synthesizer» that allows a wide range of selectable output frequencies. Beyond raw frequency, an output attenuator and levelling system keeps the delivered power consistent whether the device under test needs a very low or a very high signal level, which is essential for repeatable measurements.
Modulation: turning a carrier into a realistic test signal
Modern generators can apply AM, FM, and complex digital modulation formats to a carrier, reproducing the kind of signal a receiver will actually encounter in the field, including the modulation schemes used in 5G and IoT systems. This is what allows a generator to simulate a realistic wireless channel, rather than just a plain, unmodulated tone.
Where RF signal generators are used
RF signal generators support the full lifecycle of a wireless product: verifying receiver sensitivity, characterising filters and amplifiers, stimulating EMC immunity tests, and validating designs before they reach the field, in sectors from telecommunications to Aerospace and Defense.
ALLdata's RF signal generator range
ALLdata's catalog includes Rigol's DSG5000 series for multi-channel microwave generation up to 20 GHz: the Rigol DSG5208 (eight channel), the Rigol DSG5206 (six channel), and the Rigol DSG5204 (four channel).
Need help sizing frequency range, channel count, and modulation capability for your test bench? Talk to an ALLdata engineer.