| This nonlinearity allows the varactor to be used also as a harmonic generator. |
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| They key to understanding how a varactor or varicap diode works is to look at what a capacitor is and what can change the capacitance. |
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| Our design includes a buffer amplifier to minimize load pulling, optional frequency command by varactor circuit, as well as optional output frequency filtering for improved harmonic rejection, and voltage regulator circuit. |
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| The tunable RF capacitor has a better quality factor than the standard varactor diode. |
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