Precision programmable attenuator

Details Precision programmable attenuator Precision programmable attenuator

1991-03-04

1992-06-09

Mullins, James B.

Amplifiers

With plural amplifier channels

Amplifying different frequencies in different channels

330282, 330284, 330295, 333 81R, H03F 368

Patent

active

051210754

ABSTRACT:
The precision programmable attenuator of the present invention makes use of a pair of non-interactive parallel connected divider circuits to provide a flat frequency response over a wide bandwidth. A first of these divider circuits is a low frequency divider circuit which provides a predetermined attenuation of low frequency signals. The second high frequency divider attenuates the high frequency signals and does not interact with the low frequency attenuator. Therefore, each of these dividers can be separately tuned independent of the other. The implementation of the low frequency divider is a resistive divider network which provides a DC coupling of the input signal to the output. The high frequency divider is comprised of an adjustable capacitor divider network which is automatically electronically tuned to obtain the desired high frequency gain response.

REFERENCES:
patent: 2778883 (1957-01-01), Buckerfield
patent: 4523161 (1985-06-01), Miles

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