Strip line filter

Abstract

Abstract PURPOSE:To improve the electromagnetic shield effect and the attenuation characteristic by forming a filter electrode used for the filtering onto a dielectric base and using a metallic cover acting like electromagnetic shield in the inside of a coated resin so as to cover partially the surrounding of the filter electrodes. CONSTITUTION:A strip line filter main body 1 has an earth electrode 3 on the entire face of one major surface of the dielectric base 2 and a guard electrode 4 and plural filter electrodes 5,... are formed on the other major surfaces. The metallic cover 7 having the electromagnetic shield action is mounted to the filter main body 1, the metallic cover 7 is formed by folding a narrow spring plate in a channel shape to the side face and is fitted to the filter main body 1 by using the spring force. The metallic cover 7 covers the surrounding of the filter electrode 5 while crossing the dielectric base 2 along the prolonged direction of the filter electrode 5, its end 7a is short-circuited to the earth electrode 3 and the entire parts are covered by a resin as a product.

Inventors

• 👤 Yohei Ishikawa
• 👤 容平 石川
• 👤 Jun Hattori
• 👤 準 服部
• 👤 Hideyuki Kato
• 👤 英幸 加藤

Bibliographic Details