Title :
A two-step synthesis of broadband ridged waveguide bandpass filters with improved performances
Author :
Nanan, J.-C. ; Tao, J.W. ; Baudrand, H. ; Theron, B. ; Vigneron, S.
Author_Institution :
ENSEEIHT, Toulouse, France
Abstract :
A quarter-wave broadband ridged waveguide bandpass filter with improved stopband attenuation has been designed and realized. A two-step design procedure associating Chebyshev´s formulas with a rigorous optimization routine is also presented. The predicted filter performances, including the rectangular to ridged waveguide transformer, agree well with the measurements, showing improved stopband attenuation and reduced filter dimension in the Ku band.<>
Keywords :
band-pass filters; filtering and prediction theory; microwave filters; optimisation; passive filters; waveguide components; waveguide theory; Ku band; broadband filters; compact bandpass filters; evanescent mode waveguide filters; filter dimension; measurements; optimization routine; performances; quarter wave resonator waveguide filter; rectangular to ridged waveguide transformer; ridged waveguide bandpass filters; stopband attenuation; two-step design procedure; two-step synthesis; Attenuation measurement; Band pass filters; Design optimization; Frequency; Impedance; Inverters; Microwave filters; Performance evaluation; Resonator filters; Waveguide discontinuities;
Conference_Titel :
Microwave Symposium Digest, 1991., IEEE MTT-S International
Conference_Location :
Boston, MA, USA
Print_ISBN :
0-87942-591-1
DOI :
10.1109/MWSYM.1991.147059
