Title:
FILTER DEVICE, DUPLEXER AND COMMUNICATION DEVICE FOR BASE STATION
Document Type and Number:
Japanese Patent JP3506124
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To provide a filter device which can be miniaturized easily as a whole and the cost of which is reduced, a duplexer and a communication device for a base station provided with these filter device and duplexer.
SOLUTION: Dielectric cores 3, into which conductor bars 4 are inserted, are mounted into a cavity body 1, a TEM mode by a cavity and conductor bars and a TM mode by the cavity, the dielectric cores 3 are coupled, and dual-mode resonators RW are installed. A TEM single-mode resonator RS, composed of the cavity body 1 and the conductor bars 4, is installed together with the resonators RW, thus constituting the filter device.
More Like This:
Inventors:
Satoshi Saito
Hiroki Wakamatsu
Hiroki Wakamatsu
Application Number:
JP2001054571A
Publication Date:
March 15, 2004
Filing Date:
February 28, 2001
Export Citation:
Assignee:
MURATA MANUFACTURING CO.,LTD.
International Classes:
H01P1/20; H01P1/205; H01P1/208; H01P1/212; H01P1/213; H01P7/10; (IPC1-7): H01P1/208; H01P1/20; H01P1/205; H01P1/212; H01P1/213; H01P7/10
Domestic Patent References:
| JP62171327A | ||||
| JP251404U |
Attorney, Agent or Firm:
Hisao Komori