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3644 IEEE TRANSACTIONS ON ANTENNAS AND PROPAGATION, VOL. 53, NO. 11, NOVEMBER 2005 Clarification of Issues on the Closed-Form Green's
 

Summary: 3644 IEEE TRANSACTIONS ON ANTENNAS AND PROPAGATION, VOL. 53, NO. 11, NOVEMBER 2005
Clarification of Issues on the Closed-Form Green's
Functions in Stratified Media
M. I. Aksun, Senior Member, IEEE, and Gülbin Dural, Member, IEEE
Abstract--The closed-form Green's functions (CFGF), derived
for the vector and scalar potentials in planar multilayer media,
have been revisited to clarify some issues and misunderstandings
on the derivation of these Green's functions. In addition, the
range of validity of these Green's functions is assessed with and
without explicit evaluation of the surface wave contributions. As
it is well-known, the derivation of the CFGF begins with the ap-
proximation of the spectral-domain Green's functions by complex
exponentials, and continues with applying the Sommerfeld iden-
tity to cast these approximated spectral-domain Green's functions
into the space domain in closed forms. Questions and misun-
derstandings of this derivation, which have mainly originated
from the approximation process of the spectral-domain Green's
functions in terms of complex exponentials, can be categorized
and discussed under the topics of: 1) branch-point contributions;
2) surface wave pole contributions; and 3) the accuracy of the

  

Source: Aksun, M. Irsadi - Electrical and Electronics Engineering, Koc University

 

Collections: Engineering