Wave transmission lines and networks – Coupling networks – Equalizers
Patent
1988-06-10
1990-12-04
LaRoche, Eugene R.
Wave transmission lines and networks
Coupling networks
Equalizers
330304, H04B 304
Patent
active
049756630
ABSTRACT:
This disclosure depicts an equalizer circuit having input and output terminals and a reference terminal for receiving a reference voltage. The equalizer circuit comprises a first operational amplifier which has a positive input operatively connected to the input terminal and which also has a negative input and an output. A first adjustable resistive means has a first terminal operatively connected to the negative input of the first operational amplifier a second terminal operatively connected to the output of the first operational amplifier has a reference connection operatively connected to the reference terminal and has a third terminal. A second operational amplifier has a positive input operatively connected to the third terminal of the first adjustable resistive means, has a negative input and has an output operatively connected to the output terminal. A second adjustable resistive means has a first terminal operatively connected to the negative input of the second operational amplifier and a second terminal operatively connected to the output of the second operational amplifier, and also has a reference connection connected to the reference terminal.
REFERENCES:
patent: 3526858 (1970-09-01), Heinlein et al.
patent: 3829626 (1974-08-01), Irwin et al.
patent: 4105945 (1978-08-01), Sano et al.
patent: 4117412 (1978-09-01), Holman, II
patent: 4291276 (1981-09-01), Ida
patent: 4354159 (1982-10-01), Schorr et al.
patent: 4490692 (1984-12-01), Schorr
Hamann H. F.
LaRoche Eugene R.
Lee Benny T.
Patti C. B.
Rockwell International Corporation
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