Title:
CWG FILTER, AND RU, AU OR BS HAVING THE SAME
Document Type and Number:
WIPO Patent Application WO/2021/136389
Kind Code:
A1
Abstract:
A ceramic waveguide filter, a radio unit, an antenna unit and a base station are disclosed. According to an embodiment, a ceramic waveguide filter comprises a body (1) that is made of a ceramic material and that has a plurality of resonators each including a blind hole (101). The blind holes (101) of two of the resonators open at a first surface of the body (1) and extend toward an opposite second surface of the body (1). Capacitive coupling between the two resonators is achieved by a coupling structure (201) on/in a substrate (2), to which the body (1) is attached at the side of the second surface.
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Inventors:
LIU YONGBIN (CN)
JIA MENGYANG (CN)
LI YING (CN)
LI JIANLAN (CN)
JIA MENGYANG (CN)
LI YING (CN)
LI JIANLAN (CN)
Application Number:
PCT/CN2020/141458
Publication Date:
July 08, 2021
Filing Date:
December 30, 2020
Export Citation:
Assignee:
ERICSSON TELEFON AB L M (SE)
LIU YONGBIN (CN)
LIU YONGBIN (CN)
International Classes:
H01P1/20
Foreign References:
| CN110137638A | 2019-08-16 | |||
| CN208622916U | 2019-03-19 | |||
| US20100001815A1 | 2010-01-07 |
Other References:
CAO LIANGZU, YIN LIXIA: "Tuning Properties of Dielectric Ceramic Filters", TAO CI XUE BAO : JI KAN = JOURNAL OF CERAMICS, TAO CI XUE BAO ZA ZHI SHE, CN, vol. 38, no. 6, 1 December 2017 (2017-12-01), CN, pages 831 - 834, XP055827922, ISSN: 1000-2278, DOI: 10.13957/j.cnki.tcxb.2017.06.008
See also references of EP 4085491A4
See also references of EP 4085491A4
Attorney, Agent or Firm:
ZHONGZI LAW OFFICE (CN)
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