Method and apparatus for tuning a filter

Details Method and apparatus for tuning a filter Method and apparatus for tuning a filter

2005-11-15

2005-11-15

Summons, Barbara (Department: 2817)

Wave transmission lines and networks

Automatically controlled systems

C333S174000, C327S553000, C324S606000, C324S607000

Reexamination Certificate

active

06965275

ABSTRACT:
A method and an apparatus for tuning a filter is provided wherein the filter has at least one adjustable element for adjusting at least one performance parameter of the filter like for example a cut-off frequency, wherein a pseudo-random test sequence is applied to the filter, wherein the cross-correlation function of the test sequence and the filtered test sequence is calculated, and wherein the at least one adjustable parameter is adjusted until the cross-correlation function at at least one point basically coincides with a corresponding point of a nominal cross-correlation function for the filter.

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