Wave transmission lines and networks – Plural channel systems – Having branched circuits
Patent
1981-11-30
1983-12-27
Gensler, Paul L.
Wave transmission lines and networks
Plural channel systems
Having branched circuits
343700MS, H01P 518, H01Q 326
Patent
active
044233922
ABSTRACT:
A non-dispersive antenna feed in which a length of strip transmission line (stripline) has two spaced center conductors supported on a dielectric sheet between two ground planes. These center conductors or conductive strips produce an even-mode electric field between the two ground planes when excited in-phase and an odd-mode electric field when the center conductors are excited in anti-phase relationship. A plurality of close-coupled quarter wave conductors parallel one of the center conductors, a feed strip extends substantially orthogonally from each such coupling strip to provide an antenna element feed externally. A four poor hybrid has two external ports and two additional ports for discretely feeding the stripline center conductors in-phase corresponding to excitation of one hybrid external port an in anti-phase corresponding to excitation of the other hybrid port. Each external hybrid port thereby corresponds to a different angle of antenna beam generation.
REFERENCES:
patent: 2531438 (1950-11-01), Jones
patent: 2775740 (1956-12-01), Oliver
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