Title :
Wideband lumped element equivalent circuit model for waveguide slots and applications
Author :
Eshrah, Islam A. ; Kishk, Ahmed A. ; Yakovlev, Alexander B. ; Glisson, Allen W. ; Smith, Charles E.
Author_Institution :
Dept. of Electr. Eng., Mississippi Univ., MS, USA
Abstract :
A parallel LC equivalent circuit model for rectangular waveguide slots is obtained through the MoM analysis of a waveguide slot coupler problem. The values of the lumped LC elements are virtually constant over the frequency range of interest (the X-band) for specific waveguide and slot dimensions. Obtained through the analysis of a simple waveguide coupling problem, the equivalent circuit model is used to analyze more complicated structures, such as slot coupler arrays and slot-based waveguide filters. The results obtained for these structures through the circuit analysis are verified using the MoM and the FDTD techniques, and exhibit excellent agreement over a wide band of frequencies.
Keywords :
broadband networks; equivalent circuits; filtering theory; finite difference time-domain analysis; rectangular waveguides; slot lines; waveguide couplers; waveguide filters; FDTD techniques; finite difference time-domain; moment method analysis; rectangular waveguide slots; slot coupler arrays; slot dimensions; slot-based waveguide filters; waveguide coupling problem; wideband lumped element equivalent circuit model; Circuit analysis; Coupling circuits; Electromagnetic coupling; Electromagnetic scattering; Electromagnetic waveguides; Equivalent circuits; Filters; Frequency; Message-oriented middleware; Wideband;
Conference_Titel :
Microwave Symposium Digest, 2004 IEEE MTT-S International
Print_ISBN :
0-7803-8331-1
DOI :
10.1109/MWSYM.2004.1336057
