JPS60193724U

JPS60193724U - folding tester

Info

Publication number: JPS60193724U
Application number: JP1984079437U
Authority: JP
Inventors: 両角　俊夫
Original assignee: 株式会社東芝
Priority date: 1984-05-31
Filing date: 1984-05-31
Publication date: 1985-12-23

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 drawings]

第１図は衛星通信用地上局の一般的な構成を表わすブロ
ックダイアグラム、第２図は本考案の実施例のブロック
ダイアグラムである。１・・・信号入力端子、２．３．９．　１０・・・ミキ
サ、４．５．　１１．　１２・・・局部発振器、６・・
・給電装置、８・・・アンテナ、１３・・・信号出力端
子、１４・・・信号入力端子、１５，１６・・・ミキサ
、１７，１８・・・バンドパスフィルタ、１９・・・電
力分配器、２０・・・局部発振器、２１・・・信号出力
端子。FIG. 1 is a block diagram showing the general configuration of a satellite communication ground station, and FIG. 2 is a block diagram of an embodiment of the present invention. 1... Signal input terminal, 2.3.9. 10... mixer, 4.5. 11. 12...Local oscillator, 6...
・Power supply device, 8... Antenna, 13... Signal output terminal, 14... Signal input terminal, 15, 16... Mixer, 17, 18... Band pass filter, 19... Power distribution 20... Local oscillator, 21... Signal output terminal.

Claims

[Scope of utility model registration request]

In a folding tester for a communication device that has an oscillator that oscillates at a frequency that is 1/n of the difference between the transmission frequency and the reception frequency as a local oscillation source, there is a difference between n mixers and the transmission frequency and the reception frequency of the communication device. A local oscillator that oscillates at a frequency of 1/n of , and a distributor that distributes the output of this local oscillator and supplies it to the n mixers as a local signal, and divides the received signal frequency from the communication device into n 1. A foldback tester characterized in that the loopback tester is configured to sequentially up-convert or down-convert using multiple mixers and send the result to a communication device.