LC RESONANCE VOLTAGE-CONTROLLED OSCILLATOR WITH ADJUSTABLE NEGATIVE RESISTANCE CELL FOR MULTI-BAND

An LC resonance voltage controlled oscillator for a multiband with an adaptive negative resistance cell is provided to prevent the deterioration of phase noise and to sufficiently compensate for variation of oscillation amplitude. An LC resonance voltage controlled oscillator(300) for a multiband wi...

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Bibliographische Detailangaben
Hauptverfasser:	KIM, KWI DONG, KIM, JONG DAE, LEE, SANG HEUNG, LEE, JA YOL, KWON, CHONG KI, CHO, KYOUNG IK
Format:	Patent
Sprache:	eng
Schlagworte:	BASIC ELECTRONIC CIRCUITRY ELECTRICITY GENERATION OF NOISE BY SUCH CIRCUITS GENERATION OF OSCILLATIONS, DIRECTLY OR BY FREQUENCY-CHANGING,BY CIRCUITS EMPLOYING ACTIVE ELEMENTS WHICH OPERATE IN ANON-SWITCHING MANNER
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Beschreibung
Zusammenfassung:	An LC resonance voltage controlled oscillator for a multiband with an adaptive negative resistance cell is provided to prevent the deterioration of phase noise and to sufficiently compensate for variation of oscillation amplitude. An LC resonance voltage controlled oscillator(300) for a multiband with an adaptive negative resistance cell includes an inductance unit(330), a discrete capacitor bank, and a discrete negative resistance cell(310). The inductance unit provides an inductance component determining the frequency of an oscillating wave. The discrete capacitor bank determines the frequency of the oscillating wave, and provides a capacitance component discretely determined according to a control bit. The discrete negative resistance cell provides a negative resistance component discretely determined by the control bit so as to make amplitude of the oscillating wave uniform.