Title:
DIELECTRIC FILTER
Document Type and Number:
WIPO Patent Application WO/2018/116768
Kind Code:
A1
Abstract:
A dielectric filter (1) is provided with a printed substrate (10) on which an earth electrode (11) is formed, and a columnar dielectric resonator (20) mounted on the printed substrate (10). A resonator hole (24) is formed in an axial direction in the dielectric resonator (20), and a notched portion (25) which divides the resonator hole (24) is formed reaching from a side surface to the resonator hole (24). The dielectric resonator (20) is mounted on the printed substrate (10) in such a way that the notched portion (25) faces the printed substrate (10) and an outer conductor formed on an outer peripheral surface of the dielectric resonator (20) connects to the earth electrode (11). This makes it straightforward to adjust the passband, and makes it possible to reduce the impact of external electromagnetic fields.
Inventors:
KIKUDA MASAYUKI (JP)
TADA HITOSHI (JP)
TADA HITOSHI (JP)
Application Number:
PCT/JP2017/042844
Publication Date:
June 28, 2018
Filing Date:
November 29, 2017
Export Citation:
Assignee:
MURATA MANUFACTURING CO (JP)
International Classes:
H01P1/205; H01P7/04
Foreign References:
| JPH07288404A | 1995-10-31 | |||
| JPH1056302A | 1998-02-24 | |||
| JPS62181506A | 1987-08-08 |
Attorney, Agent or Firm:
FUKAMI PATENT OFFICE, P.C. (JP)
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