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- What:
- the RF output frequency of an oscillator
- Direction:
- needs to match the application. Changes in frequency due to changes in bias (pushing), load impedance (pulling), or temperature must also be acceptable. For a VCO, the tuning linearity (rate of change of frequency vs. tuning voltage) is typically also a critical specification. These parameters depend on circuit design (especially resonator Q) as well as the properties of the transistor.
- Range:
- kHz to 10 GHz (bipolars)
- MHz to 20 GHz (FETs)
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