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SUPPLY INDEPENDENT ACTIVE BIAS CIRCUIT

IP.com Disclosure Number: IPCOM000005539D
Original Publication Date: 1984-Apr-01
Included in the Prior Art Database: 2001-Oct-12

Publishing Venue

Motorola

Related People

Authors:
Alton P. Werronen Michael J. Frey

Abstract

In a typical transistor bias circuit, stability is achieved through the use of an emitter resistor and reliance on a stable supply voltage. However, the emitter resistor is undesirable. It helps maintain bias stability but has the undesirable effects of degrading noise figure and stability due to imperfect bypassing of the emitter.