Title:
FILTERING ANTENNA DEVICE
Document Type and Number:
WIPO Patent Application WO/2020/140579
Kind Code:
A9
Abstract:
The present invention provides a filtering antenna device, comprising an SIW filtering structure and an SIW radiation structure which is cascaded with the SIW filtering structure. The SIW filtering structure comprises a first resonant cavity and a second resonant cavity which are stacked in an up-down mode and communicated with each other. The SIW radiation structure comprises a back cavity and a metal patch. The back cavity is arranged side by side together with the first resonant cavity and the second resonant cavity, and communicated with the first resonant cavity and the second resonant cavity. The metal patch is received in the back cavity. The filtering antenna device further comprises a feed port and a first coplanar waveguide which are provided on one side of the first resonant cavity distant from the back cavity, a second coplanar waveguide provided on one side of the second resonant cavity close to the back cavity, a transmission line provided in the back cavity and connected to one end of the second coplanar waveguide, and a probe connected to the transmission line and the metal patch. One end of the first coplanar waveguide is connected to the feed port, and the other end is opposite to the end portion of the second coplanar waveguide distant from the transmission line. Compared with the prior art, the filtering antenna device provided by the present invention can inhibit the interference of out-of-band stray signals to effectively reduce the surface wave loss.
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Inventors:
MAI JIANCHUN (CN)
ZHU ZHIMIN (CN)
ZHU ZHIMIN (CN)
Application Number:
PCT/CN2019/113376
Publication Date:
August 13, 2020
Filing Date:
October 25, 2019
Export Citation:
Assignee:
AAC ACOUSTIC TECH (SHENZHEN) CO LTD (CN)
AAC TECH (NANJING) CO LTD (CN)
AAC TECH (NANJING) CO LTD (CN)
International Classes:
H01Q1/36
Attorney, Agent or Firm:
GUANGZHOU YUEXIU JILY PATENT & TRADEMARK LAW OFFICE (CN)
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