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Voltage Controlled Oscillator

IP.com Disclosure Number: IPCOM000059000D
Original Publication Date: 1988-Mar-01
Included in the Prior Art Database: 2005-Feb-15

Publishing Venue

IBM

Related People

Authors:
Boerstler, DW [+details]

Abstract

In a known oscillator circuit, two transistors have their emitter terminals connected together at a current source to form a differential amplifier. A capacitor, an inductor and a resistor are connected in parallel in the collector circuit of one transistor, forming a tank circuit. The collector terminal of this transistor is coupled to the base terminal of the other transistor. The circuit oscillates at the frequency established by the tank circuit.