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1. (WO2018219321) MULTI-FREQUENCY ANTENNA SYSTEM, AND METHOD FOR CONTROLLING DIFFERENT FREQUENCY INTERFERENCE IN MULTI-FREQUENCY ANTENNA SYSTEM

Pub. No.:    WO/2018/219321    International Application No.:    PCT/CN2018/089239
Publication Date: Fri Dec 07 00:59:59 CET 2018 International Filing Date: Fri Jun 01 01:59:59 CEST 2018
IPC: H01Q 5/10
Applicants: HUAWEI TECHNOLOGIES CO., LTD.
华为技术有限公司
Inventors: DAOJIAN, Dingjiu
道坚丁九
DU, Zijing
杜子静
XIAO, Weihong
肖伟宏
HUANG, Zhiguo
黄志国
XU, Yili
徐一骊
Title: MULTI-FREQUENCY ANTENNA SYSTEM, AND METHOD FOR CONTROLLING DIFFERENT FREQUENCY INTERFERENCE IN MULTI-FREQUENCY ANTENNA SYSTEM
Abstract:
Disclosed are a multi-frequency antenna system, and a method for controlling different frequency interference in a multi-frequency antenna system. The multi-frequency antenna system comprises at least one first radiating element and at least one second radiating element, and is characterized in that a working frequency range of the first radiating element is higher than a working frequency range of the second radiating element; each of the first radiating elements comprises a ground structure, a Balun and at least two radiating arms; one end of the Balun is electrically connected to the at least two radiating arms; the Balun comprises at least one conduction structure; the Balun is used for inputting, after acquiring a differential mode signal, the differential mode signal into the ground structure by means of the at least one conduction structure; and the differential mode signal is a signal obtained by the Balun sensing a signal from the second radiating element by means of a differential mode. By means of using the solution, different frequency interference caused by differential mode resonance between radiating elements at different frequencies can be reduced.