Title:
BAND-PASS FILTERING CIRCUIT AND MULTIPLEXER
Document Type and Number:
WIPO Patent Application WO/2019/233002
Kind Code:
A1
Abstract:
A band-pass filtering circuit and a multiplexer, wherein the band-pass filtering circuit comprises a first filtering circuit unit. The first filtering circuit unit comprises: a first acoustic resonator and second acoustic resonator connected in series; a first circuit element, the first circuit element being connected in parallel to the first acoustic resonator; a second circuit element, the second circuit element being connected in parallel to the second acoustic resonator; a third circuit element, a first end of the third circuit element being connected to a common connection end of the first acoustic resonator and the second acoustic resonator, and a second end of the third circuit element being grounded; the first circuit element and the second circuit element are both capacitive elements, and the third circuit element is an inductive element, or the first circuit element and the second circuit element are both inductive elements, and the third circuit element is a capacitive element.
Inventors:
SHI QILIN (CN)
ZUO CHENGJIE (CN)
HE JUN (CN)
ZUO CHENGJIE (CN)
HE JUN (CN)
Application Number:
PCT/CN2018/109385
Publication Date:
December 12, 2019
Filing Date:
October 09, 2018
Export Citation:
Assignee:
ANHUI ANUKI TECH CO LTD (CN)
International Classes:
H03H9/72; H03H9/64
Domestic Patent References:
| WO2017122052A1 | 2017-07-20 |
Foreign References:
| CN108512526A | 2018-09-07 | |||
| CN106664068A | 2017-05-10 | |||
| CN1496000A | 2004-05-12 | |||
| CN107342749A | 2017-11-10 | |||
| CN107210733A | 2017-09-26 |
Attorney, Agent or Firm:
BEYOND ATTORNEYS AT LAW (CN)
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