Claims
- 1. Apparatus for filtering an input signal, the apparatus comprising:
a sampling network including m parallel sampling paths, each parallel sampling path configured to include a respective series of sample values of the input signal taken once every m sampling periods; and m output paths configured to produce m output values in parallel with a new series of m output values being output each m sampling periods.
- 2. An apparatus as recited in claim 1 wherein each output path is configured to multiply and combine a respective set of the sample values in the sampling network.
- 3. An apparatus as recited in claim 1 wherein one of the m output paths produces an output value having the form:
- 4. An apparatus as recited in claim 1 wherein each parallel sampling path includes a series of sample and hold circuits where the input of each sample and hold (except the first) is the output of the previous sample and hold.
- 5. An apparatus as recited in claim 3 wherein each parallel sampling path is clocked so that sample values move between sample and hold circuits once every m sampling periods.
RELATED APPLICATION
[0001] This application is a continuation of U.S. Provisional Application Serial No. 60/234,272, filed Sep. 20, 2000. That disclosure is incorporated in this document by reference.
Provisional Applications (1)
|
Number |
Date |
Country |
|
60234272 |
Sep 2000 |
US |