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ColpittsOscillatorTutorialSheet1of10ColpittsOscillatorTutorialJPSilverE-mail:john@rfic.co.uk1ABSTRACTThispaperwilldescribethedesignandtestofalownoiseVHFColpittsvoltagecontrolledoscillator(VCO),designedtooperateat200MHz(Tuningbandwidthof23MHz/Vover1to10V)withanassociatedphasenoiseperformanceof