Matching transformer for dual-band radio receiver

Details Matching transformer for dual-band radio receiver Matching transformer for dual-band radio receiver

1995-11-06

1998-04-21

Eisenzopf, Reinhard J.

Telecommunications

Receiver or analog modulated signal frequency converter

Convertible to different type

455292, 370297, H04B 118

Patent

active

057428972

ABSTRACT:
A dual-band radio receiver utilizes a single transformer to provide impedance matching between signal mixers from separate signal paths to their respective intermediate frequency filters. Thus, a dual-band radio receiver can be made eliminating one transformer and the printed circuit board space of one transformer. In addition, only one transformer needs to be frequency aligned or adjusted during manufacturing.

REFERENCES:
patent: 2159944 (1939-05-01), Roberts
patent: 2236982 (1941-04-01), Worcester, Jr.
patent: 3497811 (1970-02-01), Karpowycz et al.
patent: 3747026 (1973-07-01), Covill
patent: 3987448 (1976-10-01), Scheppman
patent: 4051475 (1977-09-01), Campbell
patent: 4228544 (1980-10-01), Guyton
patent: 4556856 (1985-12-01), Presser

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