Title :
Equivalent circuit of an aperture-coupled lossy cavity
Author_Institution :
Dept. of Electr. Eng. & Comput. Sci., Tulane Univ., New Orleans, LA, USA
Abstract :
The equivalent circuit of an aperture-coupled cavity is derived via field analysis. To determine the input impedance of a cavity resonator coupled with a waveguide, the equivalent circuit is derived by making use of integral equations and the eigenfunction expansion of dyadic Green´s functions. It is shown that the input impedance of the aperture-coupled cavity is the sum of a capacitive reactance and a load impedance resulting from an infinite number of inductively coupled parallel RLC meshes connected in series.
Keywords :
Green´s function methods; cavity resonators; eigenvalues and eigenfunctions; electric impedance; equivalent circuits; integral equations; waveguide couplers; waveguide theory; aperture-coupled lossy cavity; capacitive reactance; cavity resonator; coupling waveguide; dyadic Green functions; eigenfunction expansion; equivalent circuit; field analysis; inductively coupled parallel RLC meshes; input impedance; integral equations; load impedance; Capacitors; Cavity resonators; Coupling circuits; Eigenvalues and eigenfunctions; Equivalent circuits; Green´s function methods; Impedance; Integral equations; Magnetic fields; Maxwell equations;
Conference_Titel :
Antennas and Propagation Society International Symposium, 2004. IEEE
Print_ISBN :
0-7803-8302-8
DOI :
10.1109/APS.2004.1330609
