Hybrid circuit

Details Hybrid circuit Hybrid circuit

1983-11-29

1986-06-17

Rubinson, Gene Z.

179170NC, H04B 158

Patent

active

045958025

ABSTRACT:
A hybrid circuit having low return loss and low transhybrid loss is disclosed. An operational amplifier is employed in a feedback configuration. The receive port of the hybrid circuit is applied to the non-inverting input of the amplifier while the center-tap of the secondary winding of the hybrid transformer is applied to the inverting input of the amplifier. Most noticeable is the omission of an impedance setting resistor at the output of the operational amplifier. The circuitry connected to the transmit port and the two-wire bidirectional port of the hybrid circuit are of conventional design.

REFERENCES:
patent: 2946861 (1960-07-01), Chen
patent: 3130274 (1964-04-01), Norling et al.
patent: 4197431 (1980-04-01), Vis
patent: 4232293 (1980-11-01), Harris
patent: 4322586 (1982-03-01), Mein et al.
patent: 4346266 (1982-08-01), Brockmann et al.
patent: 4346267 (1982-08-01), Dijkmans
patent: 4378472 (1983-03-01), Lechner
patent: 4491700 (1985-01-01), Tahara et al.

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