Active high band weighting circuit of noise reduction circuit

Details Active high band weighting circuit of noise reduction circuit Active high band weighting circuit of noise reduction circuit

1992-01-15

1993-08-31

Sikes, William L.

Electrical transmission or interconnection systems

Nonlinear reactor systems

Parametrons

323312, 323315, 323316, 381 94, G05F 326

Patent

active

052412270

ABSTRACT:
A high band weighting circuit of a noise reduction circuit is disclosed. For elevating a mid and high frequency component gain comparing with a low frequency component among input signal, the high band weighting circuit comprises a capacitor a dividing means a first voltage-to-current converting circuit, a second voltage-to-current converting circuit, a first current mirror circuit outputting a third current signal corresponding to a first current signal of the first voltage-to-current converting circuit, a second current mirror circuit coupling a fourth current signal to the output terminal corresponding to a second current signal of the second voltage-to-current converting circuit, and a third current mirror circuit coupling a fifth current signal to the output terminal corresponding to a third current signal of the first current mirror circuit. Accordingly, the high band weighting circuit can simplify circuit construction and reduce mismatching by coupling outputs of the voltage-to-current converting circuits to output terminal through current mirror circuit.

REFERENCES:
patent: 4507600 (1985-03-01), Okayama
patent: 4804904 (1989-02-01), Katakura
patent: 5061862 (1991-10-01), Tamagawa
patent: 5105145 (1992-04-01), Neth

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