Combined decimation/interpolation filter for ADC and DAC

Details Combined decimation/interpolation filter for ADC and DAC Combined decimation/interpolation filter for ADC and DAC

1993-01-28

1994-08-16

Smith, Jerry

Boots, shoes, and leggings

36472401, G06F 1531

Patent

active

053392639

ABSTRACT:
A COMBINED DECIMATION/INTERPOLATION FILTER FOR ADC AND DAC (analog-to-digital converter and digital-to-analog converter) provides a single filter which may be used both as a decimation filter and as an interpolation filter. It is simple and inexpensive. It gains simplicity and inexpensivenes by carefully selecting the tap weights of the filter, cascading multiple filters, time domain multiplexing the multiple filters into a single filter, and using adders instead of multipliers to provide the tap weights.

REFERENCES:
patent: 4601005 (1986-07-01), Kilvington
patent: 4893265 (1990-01-01), Hirosaki
patent: 5033018 (1991-07-01), Adcock
Primitive Operator Digital Filter Synthesis Using A Shift Biased Algorithm, D. R. Bull and D. H. Horrocks, IEEE 1988 Int. Sympos.
A Design Approach For A Decimation Filter, S. A. White Oct. 25-28, 1992 IEEE Conference.

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