JPS59147348U

JPS59147348U - portable transceiver

Info

Publication number: JPS59147348U
Application number: JP2103984U
Authority: JP
Inventors: 小口　紀久雄; 両角　伸治
Original assignee: セイコーエプソン株式会社
Priority date: 1984-02-16
Filing date: 1984-02-16
Publication date: 1984-10-02

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図は従来のトランシーバ−におけるフェーズロック
ドループ回路および送受信主要回路の系統図、第２図は
本考案のトランシーバ−におけるフェーズロックドルー
プ回路および送受信主要回路の系統図である。２２・・・基準源信号発振器、２５・・・位相比較器、
２７・・・電圧制御発振器、３θ・・・プログラマブル
カウンタ、３５・・・搬送波増幅器、３６・・・変調器
、３８・・・空中線。FIG. 1 is a system diagram of a phase-locked loop circuit and main transmitting/receiving circuits in a conventional transceiver, and FIG. 2 is a system diagram of a phase-locked loop circuit and main transmitting/receiving circuits in a transceiver of the present invention. 22... Reference source signal oscillator, 25... Phase comparator,
27... Voltage controlled oscillator, 3θ... Programmable counter, 35... Carrier wave amplifier, 36... Modulator, 38... Antenna.

Claims

[Scope of utility model registration request]

In a transceiver using a phase-locked loop circuit, the phase-locked loop circuit includes a reference source signal oscillator, a reference signal first frequency divider, a reference signal second frequency divider, a phase comparator, a bandpass filter, a programmable counter, a frequency It consists of a converter, a transmission/reception selector switch, a multiplier, a low recording filter, and a voltage controlled oscillator, and the reference signal first frequency divider is 17
The reference signal second frequency divider is composed of a 17 frequency divider.
2 frequency divider, the output of the reference signal oscillator is input to the reference signal first frequency divider and the multiplier, respectively;
The transmission/reception changeover switch switches between the output of the multiplier and the output of the crystal oscillator, and upon reception, the output of the multiplier is inputted to the frequency converter by the transmission/reception changeover switch. A portable transceiver-0 characterized in that the input signal passes through a phase comparator and the low-pass filter and is input to the voltage controlled oscillator.