Double tuned circuit with balanced output and image trap

Details Double tuned circuit with balanced output and image trap Double tuned circuit with balanced output and image trap

1992-08-28

1994-02-08

Gensler, Paul

Tuners

Tuner unit directly responsive to voltage and/or current...

Reactance tuning

333 25, 4551804, 4551912, H03J 318

Patent

active

052851796

ABSTRACT:
Conversion of an RF signal amplifier from an unbalanced signal configuration to a balanced signal configuration is provided while including an image trap for both sides of the balanced circuit. The grounded side of the secondary of a double tuned circuit is lifted from ground to provide a balanced circuit configuration. A trap filter is provided in the balanced circuit configuration by a pair of small capacitors coupled between the balanced secondary leads to appropriate signal nodes.

REFERENCES:
patent: 3903487 (1975-09-01), Maier
patent: 4361909 (1982-11-01), Theriault
patent: 4601062 (1986-07-01), Hettiger
patent: 4662001 (1987-04-01), Cruz et al.
patent: 4783849 (1988-11-01), Muterspaugh
patent: 5020146 (1991-05-01), Pugel
patent: 5034994 (1991-07-01), Muterspaugh et al.

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