Title:
RESONANCE CIRCUIT AND FILTERING DEVICE
Document Type and Number:
WIPO Patent Application WO/2021/213040
Kind Code:
A1
Abstract:
A resonance circuit and a filtering device, which relate to the technical field of electronic devices. The resonance circuit (100) comprises: a connection port, wherein the connection port comprises a first port (111) and a second port (113); and a resonance unit (130), wherein the resonance unit (130) comprises at least one inductor element (131) and at least one capacitor element (133), and the inductor element (131) is connected to the capacitor element (133). The first port (111) and the second port (113) are respectively connected to the resonance unit (130), so as to form at least two branches which are connected in parallel, and at least one of the first port (111) and the second port (113) is not connected to any of the capacitor elements. By means of the configurations, the problem of it being difficult to obtain a relatively high out-of-band rejection at a position near a transmission zero point due to the fact that it is difficult to make the existing resonance circuits larger under the limitation of capacitance can be ameliorated.
More Like This:
Inventors:
CHENG WEI (CN)
DAI LIJIE (CN)
ZUO CHENGJIE (CN)
HE JUN (CN)
DAI LIJIE (CN)
ZUO CHENGJIE (CN)
HE JUN (CN)
Application Number:
PCT/CN2021/079814
Publication Date:
October 28, 2021
Filing Date:
March 09, 2021
Export Citation:
Assignee:
ANHUI ANUKI TECH CO LTD (CN)
International Classes:
H03H9/15
Foreign References:
| CN111404510A | 2020-07-10 | |||
| CN211606503U | 2020-09-29 | |||
| US20180375504A1 | 2018-12-27 | |||
| CN105580274A | 2016-05-11 |
Attorney, Agent or Firm:
CHOFN INTELLECTUAL PROPERTY (CN)
Download PDF: