Title:
DUAL TM-MODE DIELECTRIC RESONATOR APPARATUS EQUIPPED WITH WINDOW FOR ELECTROMAGNETIC FIELD COUPLING, AND BAND-PASS FILTER APPARATUS EQUIPPED WITH THE DIELECTRIC RESONATOR APPARATUS
Document Type and Number:
WIPO Patent Application WO/1995/020248
Kind Code:
A1
Abstract:
A dual TM-mode dielectric resonator apparatus comprises a dual TM-mode dielectric resonator consisting of two columnar TM-mode dielectric resonators (1) crossed inside a cavity (2); and a partition (3) of a window for electromagnetic coupling between an external apparatus and the dielectric resonator. The partition (3) is disposed on the side surface of the cavity (2) opposing the external apparatus and constituted by forming a first shield conductor (30a) on a first main plane (S1) of a dielectric sheet (50) and a second shield conductor (30b) on a second main plane (S2). The first shield conductor (30a) includes parallel slits (32) formed in parallel with the longitudinal direction of one of the TM mode dielectric resonators, while the second shield conductor (30b) includes slits (31) formed in a region substantially opposed to the first slits (32). Further, a plurality of such dual TM-mode dielectric resonator apparatuses described above are combined to form a bandpass filter. Accordingly, the degree of electromagnetic field coupling can be adjusted easily and precisely by adjusting the width of the first slits (31).
Inventors:
ANDO MASAMICHI (JP)
ABE SHUICHI (JP)
ABE SHUICHI (JP)
Application Number:
PCT/JP1995/000067
Publication Date:
July 27, 1995
Filing Date:
January 24, 1995
Export Citation:
Assignee:
MURATA MANUFACTURING CO (JP)
ANDO MASAMICHI (JP)
ABE SHUICHI (JP)
ANDO MASAMICHI (JP)
ABE SHUICHI (JP)
International Classes:
H01P1/20; H01P1/208; H01P5/04; H01P7/10; (IPC1-7): H01P1/20; H01P1/208; H01P7/10
Foreign References:
| JPH0634303U | 1994-05-06 | |||
| JPS63313901A | 1988-12-22 | |||
| JPH0224601U | 1990-02-19 | |||
| JPS63318801A | 1988-12-27 | |||
| JPH0224608U | 1990-02-19 | |||
| JPS57194603A | 1982-11-30 | |||
| JPS5639703U | 1981-04-14 |
Other References:
YOHEI ISHIKAWA ET AL.: "Cellular basement deplexer using dielectric TM double mode resonator", IEICE AUTUMN CONVENTION LECTURE THESES (2), C-91, September 1991 (1991-09-01), TOKYO, pages 2 - 372
See also references of EP 0738020A4
See also references of EP 0738020A4
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