Title :
An extremely wideband ridge waveguide filter
Author :
Liu, Zhong Min ; Ruiz-Cruz, Jorge A. ; Wang, Chi ; Zaki, Kawthar A.
Author_Institution :
Dept. of Electr. & Comput. Eng., Maryland Univ., College Park, MD, USA
Abstract :
An extremely wideband ridge waveguide filter is presented. The fractional bandwidth of the filter can be greater than 115%. An input and output transition from ridge waveguide to stripline and then to coax is also designed. The analysis is done with mode matching method and verified with Ansoft HFSS. For validation purpose, a test filter with pass band from 3 GHz to 9 GHz has been designed. The results by both mode matching method and Ansoft HFSS are presented. Excellent agreement is obtained. The test filter is designed using air filled ridge waveguide; however the same design procedure can be equally applied to other manufacturing techniques such as LTCC.
Keywords :
mode matching; ridge waveguides; strip lines; waveguide filters; 3 to 9 GHz; air filled ridge waveguide; fractional bandwidth; mode matching method; stripline; wideband ridge waveguide filter; Band pass filters; Bandwidth; Circuits; Coaxial components; Mode matching methods; Resonator filters; Stripline; Testing; Waveguide transitions; Wideband;
Conference_Titel :
Microwave Symposium Digest, 2004 IEEE MTT-S International
Print_ISBN :
0-7803-8331-1
DOI :
10.1109/MWSYM.2004.1336059
