Title :
Dual post cavity waveguide filters
Author_Institution :
Fac. of Eng. & Appl. Sci., Memorial Univ. of Newfoundland, St. John´´s, Nfld., Canada
fDate :
2/1/1990 12:00:00 AM
Abstract :
A step-by-step design procedure is given for a direct coupled cavity waveguide filter. First, the amplitude response and group delay are analyzed based on the Chebyshev approximation and the realizable unloaded Q, for a given specification. After having obtained the optimal parameters, the two-post filter is realized by using two universal polynomials. One is used to calculate the post separation and the other is for the cavity length. The two polynomials are found from measured data. This design approach has been effectively used up to 20 GHz, and it can be extended to millimeter waves
Keywords :
cavity resonators; microwave filters; waveguide components; Chebyshev approximation; amplitude response; coupled cavity waveguide filter; design procedure; group delay; microwave filter; realizable unloaded Q; two-post filter; universal polynomials; Chebyshev approximation; Delay; Fasteners; Filtering theory; Frequency; Insertion loss; Microwave filters; Polynomials; Transfer functions; Waveguide theory;
Journal_Title :
Consumer Electronics, IEEE Transactions on
