Communications: radio wave antennas – Antennas – Balanced doublet - centerfed
Patent
1983-09-02
1984-12-18
Blum, Theodore M.
Communications: radio wave antennas
Antennas
Balanced doublet - centerfed
343376, H01Q 302, H01Q 312
Patent
active
044893256
ABSTRACT:
An E-scan, space fed antenna is realized using non-active radiation and excitation arrays and a reduced number of phase and amplitude shifters. The linear radiation array is coupled to the concave excitation array by a parallel plate lens. An optimization technique allows the choice of a subset of the excitation array and the calculation of the optimum complex weight for each activated element of the excitation array. An antenna design allowing 80.degree. of scan and providing a maximum sidelobe level of better than -40 dB is disclosed which requires only 16 high resolution digital phase shifters and amplitude settings.
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patent: 4408205 (1983-10-01), Hockman
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Bauck Jerald L.
Daniel Sam
Blum Theodore M.
Issing Gregory C.
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