Telecommunications – Receiver or analog modulated signal frequency converter – Frequency modifying or conversion
Patent
1980-12-15
1982-11-16
Ng, Jin F.
Telecommunications
Receiver or analog modulated signal frequency converter
Frequency modifying or conversion
455330, 333 26, H04B 126
Patent
active
043597815
ABSTRACT:
A balun coupled microwave frequency converter is provided by a mixer using a single diode pair with one port balanced and the other port unbalanced. The balanced port is provided by first and second coplanar conductors extending toward a common area and juxtaposed in spaced parallel relation with a transmission line interacting therewith to couple a field balanced between the first and second conductors across the common area. The unbalanced port to the mixer is provided by a third conductor. The diode pair is connected in series between the first and second conductors, and a point between the diodes is connected to the third conductor. One implementation is an up converter with an LO and an IF signal applied on the third conductor and input to the mixer to generate an RF signal between the first and second conductors and hence an induced output RF signal on the transmission line.
REFERENCES:
patent: 3584306 (1971-06-01), Spacek
patent: 3735267 (1973-05-01), Napoli
patent: 3939430 (1976-02-01), Dickens et al.
patent: 4186352 (1980-01-01), Hallford
Greenberg Howard R.
Hamann H. Fredrick
Lutz Bruce C.
Ng Jin F.
Rockwell International Corporation
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