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Title:
MULTI-BAND ANTENNA STRUCTURE
Document Type and Number:
WIPO Patent Application WO/2020/135140
Kind Code:
A1
Abstract:
The present application provides a multi-band antenna structure comprising a first antenna unit, a second antenna unit, a reflector, and a first parasitic structure of the first antenna unit. The first antenna unit and the second antenna unit operate in different operating frequency bands, wherein the distance between the reflector and the antenna unit in a higher operating frequency band is less than the distance between the reflector and the antenna unit in a lower operating frequency band. The first antenna unit and the second antenna unit are adjacent to each other. The distance between the first antenna unit and the second antenna unit is less than 0.5 times the vacuum wavelength of the minimum operating frequency band of the two units. The distance between the first antenna unit and the first parasitic structure is less than 0.5 times the vacuum wavelength of an operating frequency band of the first antenna unit. The distance between the second antenna unit and the first parasitic structure is less than 0.5 times the vacuum wavelength of an operating frequency band of the second antenna unit. The invention can resolve the issue of poor polarization suppression for a radiation pattern of the first antenna unit, without significantly affecting the performance of the second antenna unit.

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Inventors:
LUO BING (CN)
XIAO WEIHONG (CN)
QIN WENFEI (CN)
Application Number:
PCT/CN2019/125826
Publication Date:
July 02, 2020
Filing Date:
December 17, 2019
Export Citation:
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Assignee:
HUAWEI TECH CO LTD (CN)
International Classes:
H01Q1/52; H01Q15/00; H01Q21/30
Foreign References:
CN205141139U2016-04-06
CN107453044A2017-12-08
CN107834198A2018-03-23
CN1404639A2003-03-19
CN104600439A2015-05-06
CN108539383A2018-09-14
CN106299670A2017-01-04
US20180034161A12018-02-01
CN201811615844A2018-12-27
Other References:
See also references of EP 3886256A4
Attorney, Agent or Firm:
LEADER PATENT & TRADEMARK FIRM (CN)
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