Atsushi Fukasawa*, Takuro Sato, Kenichiro Hosoda

*Corresponding author for this work

Research output: Contribution to journalConference articlepeer-review

3 Citations (Scopus)


A new filter construction is proposed to realize a highly miniaturized microwave bandpass filter. An element of resonator filter is composed of a square dielectric post and a round inner conductor. Each element of resonator is located in a housing similar to a conventional combline filter; however, the length of a resonator is basically a quarter wavelength. The higher unloaded Q and a larger inter-resonator coupling were implemented through two factors: open-boundary condition on the periphery along the dielectric post and the air spacing between resonators. Five-stage Chebyshev response bandpass filters were developed at 800 MHz to have 20 approximately equals 30 MHz passband and 0. 8 approximately equals 1. 0 db insertion loss at the temperature range: minus 35 approximately equals plus 80 degree C. The volume and the weight of the filters are about 25 cm**3 and 60 g respectively.

Original languageEnglish
Pages (from-to)209-211
Number of pages3
JournalIEEE MTT-S International Microwave Symposium Digest
Publication statusPublished - 1981 Jan 1
Externally publishedYes
EventIEEE MTT S Int Microwave Symp Dig 1981 - Los Angeles, CA, USA
Duration: 1981 Jun 151981 Jun 19

ASJC Scopus subject areas

  • Radiation
  • Condensed Matter Physics
  • Electrical and Electronic Engineering


Dive into the research topics of 'MINIATURIZED MICROWAVE FILTER CONSTRUCTION WITH DIELECTRIC-LOADED RESONATOR AND SPACE COUPLING.'. Together they form a unique fingerprint.

Cite this