Telecommunications – Receiver or analog modulated signal frequency converter – Frequency modifying or conversion
Patent
1992-05-29
1994-04-12
Lee, Benny T.
Telecommunications
Receiver or analog modulated signal frequency converter
Frequency modifying or conversion
455330, 455333, 333121, 333246, H04B 128, H01P 520
Patent
active
053034198
ABSTRACT:
In order to reduce size and facilitate incorporation into planar multi-layer microwave integrated circuits, a microwave hybrid, specifically a Magic-Tee, is formed using microstrip circuit elements and aperture coupling. The Magic-Tee comprises a ground plane interposed between dielectric printed circuit boards. The outermost surface of one of the boards carries a Tee circuit comprising microstrip branch arm conductors with a microstrip conductor projecting transversely from its middle, the Tee junction, to form the leg of the Tee. The outermost surface of the other board comprises a line in the form of a microstrip conductor. An aperture is provided in the ground plane at a position between the Tee junction and an underlying part of the line conductor. Various Tee junction configurations, such as Y or .DELTA., may be implemented also. The magic Tee may be an integral part of an MIC or MMIC device.
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Slot-Coupled Directional Couplers Between Double-Sided Substrate Microstrip Lines and Their Applications, Toshiaki Tanaka, Kikuo Tsunoda and Masayoshi Aikawa, IEEE Transactions on Microwave Theory and Techniques vol. 36, No. 12, Dec. 1988.
Antar Yahia M. M.
Cuhaci Michel
Ittipiboon Apisak
Katsube Masahiro W.
Adams Thomas
Her Majesty the Queen in Right of Canada as represented by the M
Lee Benny T.
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