The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Dec. 27, 1994
Filed:
Nov. 16, 1992
Applicant:
Inventor:
Yukichi Aihara, Kawasaki, JP;
Assignee:
Matsushita Electric Industrial Co., Ltd., Osaka, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H03G / ;
U.S. Cl.
CPC ...
330129 ; 330133 ; 330134 ; 330279 ; 455126 ;
Abstract
A control circuit for a transmission output is used in a TDMA system radio transmitter or the like and can control a transmission output burst wave stably with high accuracy over a wide range. There is provided a closed loop system in which part of the transmission output is taken out and detected to be compared with a reference voltage to control a power amplifier and an open loop system for controlling a drive amplifier connected to an input of the power amplifier, so that a wide range operation of the transmission output and multi-stage control are attained by combining controls of both the loops.