Title:
DIRECTIONAL ANTENNA AND COMMUNICATION DEVICE
Document Type and Number:
WIPO Patent Application WO/2021/057627
Kind Code:
A1
Abstract:
Provided are a directional antenna and a communication device. The directional antenna comprises an active oscillator and a first reflector. The active oscillator comprises a first oscillator and a second oscillator, the working frequency band of the first oscillator is a first frequency band, and the working frequency band of the second oscillator is a second frequency band. The equivalent electrical length of the first reflector is equal to or slightly greater than one-half of the wavelength of the first frequency band; the first reflector comprises a first resonant circuit; the first resonant circuit comprises a first capacitive element and a first inductive element connected in parallel; the resonance frequency of the first resonant circuit is within the second frequency band; and the equivalent electrical length of the part of the first reflector excluding the first resonant circuit is less than one-half of the wavelength of the second frequency band. In the directional antenna and communication device of the present application, the first reflector can directionally reflect electromagnetic waves sent by the first oscillator, thereby improving the gain of the directional antenna in the reflection direction.
Inventors:
YU MIN (CN)
LUO XIN (CN)
SHU YUPING (CN)
CHEN YI (CN)
LUO XIN (CN)
SHU YUPING (CN)
CHEN YI (CN)
Application Number:
PCT/CN2020/116346
Publication Date:
April 01, 2021
Filing Date:
September 19, 2020
Export Citation:
Assignee:
HUAWEI TECH CO LTD (CN)
International Classes:
H01Q19/10
Foreign References:
| CN106299705A | 2017-01-04 | |||
| CN108631057A | 2018-10-09 | |||
| CN205355251U | 2016-06-29 | |||
| CN102544721A | 2012-07-04 | |||
| US6191751B1 | 2001-02-20 | |||
| CN106785359A | 2017-05-31 | |||
| CN201910927624A | 2019-09-27 |
Other References:
See also references of EP 4030560A4
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