Title :
Cavity-type directional couplers with simple structure
Author :
Kawai, T. ; Kishihara, M. ; Kokubo, Y. ; Ohta, T.
Author_Institution :
Dept. of Electron., Himeji Inst. of Technol., Hyogo, Japan
Abstract :
This paper treats directional couplers consisting of a rectangular cavity with four waveguide ports. Since the present couplers possess a very simple structure, they are useful for applications at higher microwave and millimeter-wave frequencies, and in a high-power microwave system. Directional couplers with various power-split ratios at X-band are investigated theoretically and experimentally. Furthermore, improvement of their bandwidth is presented.
Keywords :
cavity resonators; directional couplers; microwave devices; millimetre wave directional couplers; EHF; SHF; X-band; bandwidth improvement; cavity-type directional couplers; high-power microwave system; millimeter-wave frequencies; rectangular cavity; waveguide ports; Bandwidth; Boundary conditions; Coupling circuits; Directional couplers; Frequency; Magnetic circuits; Maxwell equations; Planar waveguides; Rectangular waveguides; Waveguide junctions;
Conference_Titel :
Microwave Symposium Digest, 1997., IEEE MTT-S International
Conference_Location :
Denver, CO, USA
Print_ISBN :
0-7803-3814-6
DOI :
10.1109/MWSYM.1997.602821
