Delay line filter having a single cross-coupled pair of elements
AssigneeLucent Technologies Inc.
InventorJoseph Patrick Mendelsohn
Life of this patent
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Abstract
A method and apparatus for implementing a delay line filter with a single cross-coupled pair of filter elements. In a first exemplary embodiment of the present invention, the filter is comprised of a plurality of symmetrically configured filter elements, wherein only two of the filter elements are cross-coupled. In a second exemplary embodiment of the present invention, the filter is comprised of a plurality of filter elements, wherein a first element is coupled to a second element, and the first and second elements are each coupled to at least two other elements and at least one of the at least two other elements for each of the first and second elements are the same.
Claims15
A method for implementing a delay line filter, comprising the steps of:
- positioning an odd number of filter elements into a plurality of columns having two filters elements and a single column having a single filter element;
- and
- positioning a plurality of partitions between certain ones of the filter elements to provide a single cross-coupled pair of filter elements, wherein each one of the filter elements each has a transmission line structure, and the plurality of partitions are comprised of a first wall, a second wall, and a third wall.
A delay line filter, comprising:
- an odd number of elements N greater than three, said elements positioned in (N−1)/2 columns having two elements and a ((N+1)/2)th column having a single element;
- and
- a first wall, a second wall, and a third wall positioned between certain ones of the elements to produce a single cross-coupled pair of elements.
A method for implementing a delay line filter, comprising the steps of:
- positioning an odd number of elements N greater than three in (N-1)/2columns having two elements and a ((N+1)/2)th column having a single element;
- and
- positioning a first wall, a second wall, and a third wall between certain ones of the elements to produce a single cross-coupled pair of elements.
Dependencies are inferred from the claim text.