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1. (WO2014204678) AMPLITUDE TAPERED SWITCHED BEAM ANTENNA SYSTEMS

Pub. No.:    WO/2014/204678    International Application No.:    PCT/US2014/041320
Publication Date: Thu Dec 25 00:59:59 CET 2014 International Filing Date: Sat Jun 07 01:59:59 CEST 2014
IPC: H01Q 3/40
H01Q 21/22
Applicants: ALCATEL-LUCENT SHANGHAI BELL CO., LTD.
Inventors: POWELL, Charles, M.
KATIPALLY, Raja, Reddy
Title: AMPLITUDE TAPERED SWITCHED BEAM ANTENNA SYSTEMS
Abstract:
Switched beam antenna systems are disclosed. The disclosed antenna systems include an antenna having multiple, co-linear arrays of electromagnetic radiating elements and a Butler Matrix feed network that feeds the antenna. Each of the arrays of electromagnetic radiating elements includes an identical number of radiating elements. At least one antenna port of the Butler Matrix feed network is connected to a power divider/combiner to split the signal strength at the at least one antenna port such that signal power is distributed unequally among the arrays of electromagnetic radiating elements. Power is distributed among the arrays in a manner that provides an improved balance of side lobe suppression and overall antenna gain.