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1. (WO2018040141) BROADBAND THREE-BEAM ARRAY ANTENNA

Pub. No.:    WO/2018/040141    International Application No.:    PCT/CN2016/099282
Publication Date: Fri Mar 09 00:59:59 CET 2018 International Filing Date: Tue Sep 20 01:59:59 CEST 2016
IPC: H01Q 21/24
Applicants: GUANGDONG BROADRADIO COMMUNICATION TECHNOLOGY CO,.LTD
广东博纬通信科技有限公司
Inventors: WU, Zehai
吴泽海
ZHANG, Shao
张劭
SU, Zhenhua
苏振华
WU, Biqun
吴壁群
Title: BROADBAND THREE-BEAM ARRAY ANTENNA
Abstract:
Disclosed in the present invention is a broadband three-beam array antenna, comprising: a metal reflector plate; a radiating element array comprising M sub-arrays, each of the sub-arrays comprising N radiating elements arranged in a horizontal direction, at least one of the sub-arrays being shifted in the horizontal direction; multiple phase compensation circuits performing phase compensation on the sub-array shifted in the horizontal direction; and multiple beamforming networks comprising two 3x3 Butler matrix circuits and two power distribution networks. The 3x3 Butler matrix circuits comprise a first input port for forming a first beam, a second input port for forming a second beam, and a third input port for forming a third beam. The present invention suppresses grating lobes by means of employing a solution of arranging radiating elements in different rows having a horizontal shift according to a specific rule, and performing specific phase compensation on a shifted radiating element in a feed network.