Telecommunications – Receiver or analog modulated signal frequency converter – Frequency modifying or conversion
Patent
1993-07-13
1995-06-27
Eisenzopf, Reinhard J.
Telecommunications
Receiver or analog modulated signal frequency converter
Frequency modifying or conversion
455330, 455333, 333 26, H04B 126
Patent
active
054288380
ABSTRACT:
A monolithic diode star mixer incorporating an RF balun and a local oscillator balun in which a center microstrip conductor for each of the baluns is configured between parallel strip transmission lines in a common plane. The RF and local oscillator baluns are positioned in a ground plane such that the baluns are at relative right angles to each other and in which the center microstrips are connected. A center ring conductor enables the diodes associated with the mixer to be connected to the transmission lines and a common connection point. Additionally, an intermediate frequency transmission line is also connected to the conductive ring.
REFERENCES:
patent: 4739519 (1988-04-01), Findley
patent: 5125111 (1992-06-01), Trinh
patent: 5265266 (1993-11-01), Trinh
Bui Stacey B. T.
Chang Kwo W.
Chen Tzu-Hung
Lui Louis C. T.
Eisenzopf Reinhard J.
Pham Chi H.
TRW Inc.
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