Microwave filter using dielectric resonator

Abstract

Abstract PURPOSE:To manufacture easily a filter by providing plural center electric conductors in a dielectric of an integral construction, forming an electric conductor pattern on the end face of the dielectric by extending it from this center electric conductor, and adjusting this electric conductor pattern. CONSTITUTION:An electrical signal impressed from an input terminal 1 generates an electromagnetic field by a dielectric resonator 3 of an input stage provided in a dielectric of an integral construction, it is transmitted to a dielectric resonator 5 of the next stage through a coupling part 9 formed by an electric conductor pattern 14 and 16 extended from each center electric conductor and provided on the end face of the dielectric, and thereafter, it is transmitted to the next stage one after another in the same way. This electric conductor pattern can adjust not only an interstage coupling quantity but also a resonance frequency of each dielectric resonator 3-8. Also, these electric conductor patterns 14-19 can be adjusted by a mechanical method or an optical method, and also, since a dielectric of an integral construction is used, a filter having a desired characteristic can be manufactured easily.

Inventors

• 👤 Izumi Kawakami
• 👤 川上　泉
• 👤 Tomokazu Komazaki
• 👤 友和 駒崎
• 👤 Katsuhiko Gunji
• 👤 勝彦 郡司
• 👤 Norio Onishi
• 👤 大西　法生

Bibliographic Details