### Abstract

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 language | English |
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Title of host publication | IEEE MTT-S International Microwave Symposium Digest |

Publisher | IEEE |

Pages | 209-211 |

Number of pages | 3 |

Publication status | Published - 1981 |

Externally published | Yes |

Event | IEEE MTT S Int Microwave Symp Dig 1981 - Los Angeles, CA, USA Duration: 1981 Jun 15 → 1981 Jun 19 |

### Other

Other | IEEE MTT S Int Microwave Symp Dig 1981 |
---|---|

City | Los Angeles, CA, USA |

Period | 81/6/15 → 81/6/19 |

### Fingerprint

### ASJC Scopus subject areas

- Electrical and Electronic Engineering
- Condensed Matter Physics

### Cite this

*IEEE MTT-S International Microwave Symposium Digest*(pp. 209-211). IEEE.

**MINIATURIZED MICROWAVE FILTER CONSTRUCTION WITH DIELECTRIC-LOADED RESONATOR AND SPACE COUPLING.** / Fukasawa, Atsushi; Sato, Takuro; Hosoda, Kenichiro.

Research output: Chapter in Book/Report/Conference proceeding › Chapter

*IEEE MTT-S International Microwave Symposium Digest.*IEEE, pp. 209-211, IEEE MTT S Int Microwave Symp Dig 1981, Los Angeles, CA, USA, 81/6/15.

}

TY - CHAP

T1 - MINIATURIZED MICROWAVE FILTER CONSTRUCTION WITH DIELECTRIC-LOADED RESONATOR AND SPACE COUPLING.

AU - Fukasawa, Atsushi

AU - Sato, Takuro

AU - Hosoda, Kenichiro

PY - 1981

Y1 - 1981

N2 - 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.

AB - 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.

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UR - http://www.scopus.com/inward/citedby.url?scp=0019689411&partnerID=8YFLogxK

M3 - Chapter

SP - 209

EP - 211

BT - IEEE MTT-S International Microwave Symposium Digest

PB - IEEE

ER -