Matsushita Electric Industrial Co., Ltd.

Akihito Deki

Yukiro Kashima

Hirotaka Fujisaki

Akira Kinoshita

Shozo Aono

Kazuyoshi Nishioka

Yasufumi Siomi

Circuit assembly for down converter for satellite communications

Cylindrical waveguide-to-microstrip line converter

Microwave multistage amplifier

A down converter device is disclosed which is used in a satellite communication system to convert a microwave signal to an intermediate frequency signal by the use of a standard signal having a frequency range of several to several tens of MHz, and to apply the intermediate frequency signal to a next stage component. The down converter includes a mixer for producing the intermediate frequency signal indicative of a frequency difference between the standard signal and the microwave signal. A separator is provided which includes a first terminal for receiving the intermediate frequency signal, a second terminal for producing and supplying the intermediate frequency signal to the next stage component and for receiving the standard signal from the next stage component, a first filter for separating the standard signal, and a third terminal for producing the standard signal to the mixing means.

Down converter for satellite communication system

Growing community of inventors

Amagasaki, Japan

Akihito Deki