VOLTAGE CONTROLLED OSCILLATOR, AND ADJUSTMENT CIRCUIT FOR VOLTAGE CONTROLLED OSCILLATOR

VOLTAGE CONTROLLED OSCILLATOR, AND ADJUSTMENT CIRCUIT FOR VOLTAGE CONTROLLED OSCILLATOR

PROBLEM TO BE SOLVED: To provide a voltage controlled oscillator capable of providing a desired frequency range by controlling an oscillated frequency. SOLUTION: The voltage controlled oscillator 100 includes: a tank circuit 5 including a first inductor 2, a second inductor 3, and a first variable c...

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Bibliographische Detailangaben
1. Verfasser: KOZAI SHOHEI
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:PROBLEM TO BE SOLVED: To provide a voltage controlled oscillator capable of providing a desired frequency range by controlling an oscillated frequency. SOLUTION: The voltage controlled oscillator 100 includes: a tank circuit 5 including a first inductor 2, a second inductor 3, and a first variable capacitor 4; an n-type first MOS transistor 6 connected between another terminal of the first inductor 2 and a ground level VSS and whose gate is connected to another terminal of the second inductor 3; an n-type second MOS transistor 7 connected between the another terminal of the second inductor 3 and the ground level VSS and whose gate is connected to the another terminal of the first inductor 2; a third inductor 9; a fourth inductor 11; and a second variable capacitor 13 connected between another terminal of the third inductor 9 and another terminal of the fourth inductor 11. COPYRIGHT: (C)2008,JPO&INPIT