Title :
Generalised lattice transformation for crystal filters
Author_Institution :
GEC Research Laboratories, Hirst Research Centre, Wembley, UK
Abstract :
Crystal lattice filters are usually based on the transformation of a lowpass Brune section to a second-order lattice section. This letter describes a generalisation, which transforms n Brune sections simultaneously into a lattice of order 2n, and which offers advantages for high-order filters, or filters with complex transmission zeros.
Keywords :
crystal filters; linear network synthesis; lumped parameter networks; passive filters; Brune sections; complex transmission zeros; crystal filters; generalised lattice transformation; high-order filters; linear network synthesis; lumped parameter networks; passive filters;
Journal_Title :
Electronics Letters
DOI :
10.1049/el:19830248
