Title:
FILTER AND COMMUNICATION DEVICE
Document Type and Number:
WIPO Patent Application WO/2022/068507
Kind Code:
A1
Abstract:
A filter and communication device. The filter comprises a first component combination and a second component combination. The first component combination comprises a first basic component. The second component combination comprises a second basic component. The two basic components are used to generate a partial transmission zero point of the filter. The first basic component is coupledly connected to a resonator in the second component combination only by means of frequency-dependent coupling. Said frequency-dependent coupling is used to generate a transmission zero point, and the transmission zero point generated by the frequency-dependent coupling is an independently controllable transmission zero point. The coupling coefficient of the frequency-dependent coupling between the first component combination and the second component combination varies with frequency. Therefore, the frequency-dependent coupling can generate one transmission zero point. The frequency-dependent coupling serves as a unique main signal transmission path for the first component combination and the second component combination. Therefore, the transmission zero point generated by the frequency-variable coupling can be independently controlled. The filter, by using of fewer orders, can generate a finite number of controllable transmission zero point.
Inventors:
WANG HUAHONG (CN)
WANG SHENGJIE (CN)
YANG RUI (CN)
WANG SHENGJIE (CN)
YANG RUI (CN)
Application Number:
PCT/CN2021/115921
Publication Date:
April 07, 2022
Filing Date:
September 01, 2021
Export Citation:
Assignee:
HUAWEI TECH CO LTD (CN)
International Classes:
H01P1/20; H01P1/205
Foreign References:
| CN101626101A | 2010-01-13 | |||
| CN106025465A | 2016-10-12 | |||
| CN102683769A | 2012-09-19 | |||
| CN111463529A | 2020-07-28 |
Attorney, Agent or Firm:
TDIP & PARTNERS (CN)
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