Wave transmission lines and networks – Coupling networks – With impedance matching
Patent
1980-11-03
1983-05-10
Gensler, Paul L.
Wave transmission lines and networks
Coupling networks
With impedance matching
333238, H01P 508
Patent
active
043832261
ABSTRACT:
This device provides for a substantially orthogonal transition or connection point between a strip transmission line configuration (one conductor, or two conductors sandwiched around a dielectric support, positioned in air between two ground planes such as might be used in a microwave antenna feed network) and a coaxial line section. The particular construction of the "side-launch transition" suppresses spurious parallel plate modes, and, in the case of two conductors surrounding a dielectric, trapped modes which occur between the two conductors. A U-shaped upper "dam" and corresponding lower "dam," electrically interconnected at several points, surround the termination of the stripline conductor(s) and provide suppression of parallel plate moding at the transition. In the case of two conductors surrounding a dielectric, electrical interconnection at the terminal point of the stripline conductors suppresses the trapped modes before they can be launched. The system has been found to provide extremely low voltage standing wave ratios over a wide range of microwave frequencies.
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Davis, "Air Stripline Promises to Cut Cost of Phased Arrays", Microwaves, Oct. 1973, pp. 12, and 19.
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Frank Paul D.
Han Ching C.
Kelly Jack E.
Matthews, Jr. Edgar W.
Nygren Evert C.
Ford Aerospace & Communications Corporation
Gensler Paul L.
Radlo Edward J.
Sanborn Robert D.
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