TRANSMISSION CIRCUIT, METHOD FOR REGULATING OUTPUT CHARACTERISTICS OF TRANSMISSION CIRCUIT AND COMMUNICATION APPARATUS

PROBLEM TO BE SOLVED: To perform impedance matching for attaining desired transmission characteristics without increasing power loss in a transmission circuit. SOLUTION: A matching circuit 20 is provided between the termination terminal of an isolator 13 provided at the post-stage of a power amplifi...

Full description

Saved in:
Bibliographic Details
Main Authors KUZUHARA AKIRA, YAMAMOTO SHINYA, HAYASAKA HIROAKI
Format Patent
LanguageEnglish
Published 27.10.2005
Edition7
Subjects
BASIC ELECTRONIC CIRCUITRY
CONTROL OF AMPLIFICATION
ELECTRIC COMMUNICATION TECHNIQUE
ELECTRICITY
TRANSMISSION
Online AccessGet full text

Cover

More Information
Summary:PROBLEM TO BE SOLVED: To perform impedance matching for attaining desired transmission characteristics without increasing power loss in a transmission circuit. SOLUTION: A matching circuit 20 is provided between the termination terminal of an isolator 13 provided at the post-stage of a power amplifier 11 and the earth. Levels of transmission output power and current consumption of a transmission circuit are displayed on the monitor of a PC (personal computer). Circuit constants of the matching circuit 20 are adjusted such that the levels of transmission output power and current consumption displayed on the monitor have desired values, and the impedance is regulated when the post-stage circuit side is viewed from the input end of the isolator 13 thus matching the output impedance of the power amplifier 11 and the input impedance of the isolator 13. COPYRIGHT: (C)2006,JPO&NCIPI
Bibliography:Application Number: JP20040113540