Title :
A Q-band low-profile waveguide BRF with built-in open-ended λ/2 microstrip resonators
Author :
Yoneda, S. ; Uchida, H. ; Tanaka, M. ; Sasaki, T. ; Yukawa, H. ; Hirano, Y.
Author_Institution :
Mitsubishi Electr. Corp., Kamakura, Japan
Abstract :
A new and low profile waveguide band-rejection filter (BRF) is proposed. In the waveguide BRF, two dielectric substrates with open-ended λ/2 mictostrip resonators are employed without via holes, and they are inserted in a hollow waveguide. For this simple configuration, this waveguide BRF is low-profile and easy to be fabricated compared with a conventional waveguide BRF, which employs resonant waveguide cavities outside the waveguide and needs costly machining processes. Q-band prototype waveguide BRFs were fabricated using alumina substrates, and the measured results showed high attenuation more than 50 dB at 47 GHz in 2% fractional bandwidth with less variability.
Keywords :
alumina; band-stop filters; microstrip filters; microstrip resonators; millimetre wave filters; resonator filters; Q-band; alumina substrates; frequency 47 GHz; hollow waveguide; microstrip resonators; resonant waveguide cavities; via holes; waveguide band-rejection filter; Dielectrics; Impedance; Optimization; Resonant frequency; Resonator filters; Substrates; Band rejection filters; Band stop filters; Microstrip resonators; Millimeter-wave filters; Waveguide filters;
Conference_Titel :
Microwave Symposium Digest (MTT), 2011 IEEE MTT-S International
Conference_Location :
Baltimore, MD
Print_ISBN :
978-1-61284-754-2
Electronic_ISBN :
0149-645X
DOI :
10.1109/MWSYM.2011.5972574