JPS58173919U

JPS58173919U - power amplifier

Info

Publication number: JPS58173919U
Application number: JP1982070669U
Authority: JP
Inventors: 千葉　耕司; 大舘　均
Original assignee: 日本電信電話株式会社
Priority date: 1982-05-17
Filing date: 1982-05-17
Publication date: 1983-11-21

Abstract

(57)【要約】本公報は電子出願前の出願データであるた
め要約のデータは記録されません。(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Brief explanation of the drawing]

第１図はＤ級動作電力増幅器の説明図、第２図はＦ級動
作電力増幅器の説明図、第３図は無線電話機の送信時の
送信波側帯波のスペクトラム分布の説明図、第４図は無
線電話機の構成図、第５図は送受分波器の特性、送信機
とその側帯波雑音の一説明図、第６図はｒ級電力増幅器
を無線電話機に適用したときの一般構成図、第７図は本
考案電力増幅器の一実施例を示す構成図である。２８・・・トランジスタ、２９・・・チョークコイル、
３０・・・λへ分布定数線路、３１・・・直流阻止用コ
ンデンサ、３３．３４・・・バンド・パス・フィルタ、
３３′・・・送受分波器、３５・・・アンテナ。Fig. 1 is an explanatory diagram of a class D operating power amplifier, Fig. 2 is an explanatory diagram of an F class operating power amplifier, Fig. 3 is an explanatory diagram of the spectrum distribution of the transmission wave sideband during transmission of a wireless telephone, and Fig. 4 is a configuration diagram of a wireless telephone, FIG. 5 is an explanatory diagram of the characteristics of a transmitting/receiving duplexer, a transmitter and its sideband noise, and FIG. 6 is a general configuration diagram when an R-class power amplifier is applied to a wireless telephone. FIG. 7 is a block diagram showing one embodiment of the power amplifier of the present invention. 28...Transistor, 29...Choke coil,
30...distributed constant line to λ, 31...DC blocking capacitor, 33.34...band pass filter,
33'...Transmission/reception duplexer, 35...Antenna.

Claims

[Scope of utility model registration request]

In a power amplifier for a radio telephone with an operation mode in which active elements are operated in a switching manner and a resonator or band pass φ filter is used on the output side, a transmitting/receiving duplexer is used in combination as the resonator or band pass filter. A power amplifier featuring: