Title:
FILTER DEVICE AND COMMUNICATION DEVICE
Document Type and Number:
WIPO Patent Application WO/2019/044659
Kind Code:
A1
Abstract:
The present invention is provided with: an antenna terminal 23; a first filter 19A and a second filter 19B that are connected to the antenna terminal 34, branched from each other when viewed from the antenna terminal 34, and have different pass bands; an individual inductor 53, which, when viewed from an antenna terminal 23, is connected in series to a branch point 34w at which the first filter 19A branches from the other filter and becomes independent; and a common inductor 51 that is located between a position between the antenna terminal 23 and the branch point 34w and a reference unit and that is commonly connected in parallel to a filter 19. The first filter 19A has a higher pass band frequency than the other filters, and at the center frequency of the pass band of an own filter, the susceptance when the side of the second filter 19B is viewed from the antenna terminal 23 is greater than the susceptance when the side of the first filter 19A is viewed from the antenna terminal 23.
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Inventors:
KIMURA TOSHIYA (JP)
Application Number:
PCT/JP2018/031194
Publication Date:
March 07, 2019
Filing Date:
August 23, 2018
Export Citation:
Assignee:
KYOCERA CORP (JP)
International Classes:
H03H9/72; H03H7/38; H03H7/46
Foreign References:
| JP2007110714A | 2007-04-26 | |||
| JP2017017520A | 2017-01-19 | |||
| JP2000151456A | 2000-05-30 | |||
| JPH0269012A | 1990-03-08 |
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