1. Generally, a frequency synthesizer widens its RF output frequency range by integrating multiple voltage-controlled oscillators (VCOs) internally.
2. Inside the frequency synthesizer, the RF frequency of the voltage-controlled oscillator (VCO) is divided by the subsequent RF frequency divider to broaden the frequency band range of the frequency synthesizer.
3. The wide output frequency range is achieved by selecting, through the subsequent gating circuit, either the RF frequency of the voltage-controlled oscillator or the frequency after frequency division for output.

2025-09-08|Frequency Source & Timing Products|