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RF POWER LEVELLING SCHEME WITH ADJUSTABLE CHARACTERISTICS OVER VOLTAGE

IP.com Disclosure Number: IPCOM000005831D
Original Publication Date: 1990-Mar-01
Included in the Prior Art Database: 2001-Nov-09
Document File: 1 page(s) / 74K

Publishing Venue

Motorola

Related People

Authors:
Chan Sek Loon Teo Pek Bing Peter J. Green Koo Choong Yew

Abstract

The power output of a RF power amplifier may be adjusted by controlling the base bias of the power amplifier tran- sistor. By varying this base bias via a control circuit the amplifier is made to exhibit various characteristics over supply voltage variations leading to power levelling control as well as protection of the RF power amplifier under high line conditions.