FM_HF_OSCILLATOR_WITH_NO_VARACTOR

Published:2009/6/23 2:25:00 Author:Jessie | From:SeekIC

Instead of using a varactor to frequency-modulate a high-frequency oscillator, this circuit uses base-charging capacitance modulation. Consequently, the large voltage change required by a varactor, which can be a major problem in battery-powered systems with limited supply voltages, is elimtnated. T1 is a ceramic coaxial quarter-wave resonator.



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