Title :
Improved coupling formula for dual monolithic crystal filters
Author :
Beck, Erwin ; Schultze, E. ; Meyr, Heinrich
Author_Institution :
Research Division Hasler Ltd., Berne, Switzerland
Abstract :
In a new approach, based on the fact that resonance frequencies of monolithic crystal filters are obtained as roots of frequency equations, an improved coupling formula is derived.
Keywords :
crystal filters; dual monolithic crystal filters; improved coupling formula;
Journal_Title :
Electronics Letters
DOI :
10.1049/el:19760375
