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Title: Beam forming network for butler matrix fed circular array

Abstract: A circular multimode antenna array having N radiating elements, an NXN Butler matrix and N-1 phase shifters includes feed networks comprising a back fill-in network, a sum pattern power divider network, a difference pattern power divider network and a sum-difference combiner network. The various networks are used either alone or in simultaneous combination to provide sum and difference circular antenna patterns having omnidirectional side lobes.


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Inventors: Acoraci, Joseph H. (Phoenix, MD)

Application Number: 06/090836
Filing Date: 1979-11-01
Publication_date: 1982-02-16
Assignee: BENDIX CORP

Primary Class(es): 342/373 343/100SA
Other Classes: H01Q3/24; H01Q3/40; H01Q25/02; H01Q3/30; H01Q25/00; G01S1/14; H01Q3/40; H01Q3/36
US Patent Ref:
3797019March, 1974Shestag et al.343/100SALOW LOSS MODULATION SYSTEM FOR USE WITH ANTENNA ARRAY
3999182December, 1976Moeller et al.343/100SAPhased array antenna with coarse/fine electronic scanning for ultra-low beam granularity
4163974August, 1979Profera343/100SAAntenna feed system

Other Refs:
Primary Examiner: Hubler, Malcolm F.
Assistant Examiner:
Attorney: Christoforo W. G.
Lamb, Bruce L.
Claims: