A Varactor-tuned oscillator with linear tuning characteristic. (Technical Feature).

From: Microwave Journal | Date: February 1, 2002| Author: | Copyright information

In certain areas of microwave applications such as FMCW radars, FM modulators and phase-locked loop (PLL) circuits, the system performance is enhanced when the frequency of a voltage-controlled oscillator (VCO) is linear with respect to its control voltage. (1,2) Although YIG-tuned oscillators have good linearity as well as a wide tuning range, their low tuning speed restricts their usefulness. (1) Varactor-tuned oscillators (VTO), on the other hand, feature high speed tuning, although their linearity is inferior to that of YIG-tuned oscillators. Therefore, improving the linearity ...

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