Amplifiers – With semiconductor amplifying device – Including distributed parameter-type coupling
Patent
1991-04-15
1993-05-25
Hille, Rolf
Amplifiers
With semiconductor amplifying device
Including distributed parameter-type coupling
330295, 333 21A, 333137, 343 70MS, 343786, H03F 36, H01Q 2300
Patent
active
052143945
ABSTRACT:
The present invention is a high efficiency bi-directional spatial power combiner for extremely high frequency signals. In one embodiment, orthogonally polarized electro-magnetic waves are used to isolate signals going into and out of a planar array of amplifiers. A dual mode horn transmits vertically polarized fields to a MMIC planar array of amplifiers. Vertically polarized array elements receive the signals, amplify them, and retransmit back to the horn using horizontally polarized array elements. An ortho-mode transducer on the horn provides isolation for the two polarized signals. The backside of the array can be used for a heat sink, and to provide access for DC biasing of the array elements. In a second embodiment, monolithic grid oscillators are used in lieu of power amplifiers with orthogonal polarization array elements. The input signal and the output signal are of the same polarization. A circulator is used in lieu of an ortho-mode transducer to isolate the input signal from the output signal.
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Arthur David J.
Brown Peter Toby
Hamann H. Fredrick
Hille Rolf
Montanye George A.
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