Equivalent circuit of an aperture-coupled lossy cavity

Author

Huang, Yeqin

Author_Institution

Dept. of Electr. Eng. & Comput. Sci., Tulane Univ., New Orleans, LA, USA

Volume

2

fYear

2004

fDate

20-25 June 2004

Firstpage

2043

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;

fLanguage

English

Publisher

ieee

Conference_Titel

Antennas and Propagation Society International Symposium, 2004. IEEE

Print_ISBN

0-7803-8302-8

Type

conf

DOI

10.1109/APS.2004.1330609

Filename

1330609