Resonator for coupling intermediate frequency signals from a rad

Details Resonator for coupling intermediate frequency signals from a rad Resonator for coupling intermediate frequency signals from a rad

1997-01-09

1998-08-04

Urban, Edward F.

Telecommunications

Receiver or analog modulated signal frequency converter

Frequency modifying or conversion

455327, 455319, 455330, H04B 126

Patent

active

057909458

ABSTRACT:
A dumbbell shaped resonator efficiently couples IF signals from short transmission lines to an output transmission line at a radio frequency (RF) mixer's IF output port. The RF mixer uses short transmission lines and terminating resistors to match impedances within the mixer and to minimize the mixer's distortion. The RF mixer, including the dumbbell resonator, is constructed on a printed circuit board and has a low manufacturing cost. Alternatively, the output transmission line is center-tapped to provide a pair of IF signals having opposite phases.

REFERENCES:
patent: 4541124 (1985-09-01), Lacour et al.
patent: 5157786 (1992-10-01), Muterspaugh
patent: 5179732 (1993-01-01), Omoto
patent: 5553319 (1996-09-01), Tanbakuchi
Eisenberg et al, Double-Double Balanced MMIC Mixer, Litton Solid State Division, California, Fall 1991.

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