Title :
Closed-form green´s functions in cylindrically stratified media for method of moments applications
Author :
Karan, S. ; Ertürk, V.B.
Author_Institution :
Dept. of Electr. & Electron. Eng., Bilkent Univ., Ankara, Turkey
Abstract :
Available closed-form Green´s function (CFGF) representations for cylindrically stratified media are modified to obtain new CFGF representations that yield very accurate results for cases where source and field points are on the top of or very close to each other. Consequently, these new expressions can safely be used for the entries of the method of moments (MoM) impedance matrix that represent the self and overlapping terms in a Galerkin MoM procedure. Numerical results for the self term and mutual coupling between arbitrarily oriented current modes are obtained using these new CFGF representations and compared with the results of an eigenfunction solution developed using spectral domain techniques. Excellent agreement is achieved.
Keywords :
Galerkin method; Green´s function methods; eigenvalues and eigenfunctions; electromagnetic coupling; impedance matrix; method of moments; microstrip antennas; spectral analysis; CFGF representation; Galerkin MoM procedure; MoM impedance matrix; closed-form Green´s function; cylindrically stratified media; eigenfunction solution; method of moment; microstrip antenna; mutual coupling; oriented current mode; spectral domain technique; Closed-form solution; Green´s function methods; Impedance; Integral equations; Kernel; Microstrip antennas; Moment methods; Mutual coupling; Nonhomogeneous media; Transmission line matrix methods;
Conference_Titel :
Electromagnetics in Advanced Applications, 2009. ICEAA '09. International Conference on
Conference_Location :
Torino
Print_ISBN :
978-1-4244-3385-8
Electronic_ISBN :
978-1-4244-3386-5
DOI :
10.1109/ICEAA.2009.5297392
