VHF-UHF mixer having a balun

Details VHF-UHF mixer having a balun VHF-UHF mixer having a balun

1987-10-16

1989-09-05

Griffin, Robert L.

Telecommunications

Receiver or analog modulated signal frequency converter

Frequency modifying or conversion

455330, 455325, H04B 126

Patent

active

048646440

ABSTRACT:
A VHF-UHF mixer, which has a balun (14) having a ferrite core (141), a pair of R-C parallel connection circuits (15a) and (15b) connected to output ends of the balun (14), a series connection of two mixing diodes (16a) and (16b) connected across output ends of the R-C parallel connection circuits, and a diplexer (17) consisting of a high pass filter and a low pass filter and connected by its input terminal to center connection point (18) of said series connection of the two mixing diodes, further has a pair of impedance circuits (19a,19b), each being grounded by one ends thereof, consisting of L-C-L series connection circuit, and connected to either input end or output end of the R-C parallel connection circuit.

REFERENCES:
patent: 3705366 (1972-12-01), Vergnolle
patent: 4348773 (1982-07-01), Caroli
patent: 4492960 (1985-01-01), Hislop
patent: 4566132 (1986-01-01), Meyer et al.
patent: 4651344 (1987-03-01), Hasegawa et al.
patent: 4710974 (1987-12-01), Kupfer

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