Research Information System
2003 IEEE International Antennas and Propagation Symposium and USNC/CNC/URSI North American Radio Science Meeting, Columbus, OH, United States Of America, 22 - 27 June 2003, vol.1, pp.673-676, (Full Text)
To overcome the numerical inefficiency of getting the spatial-domain Green's functions, they are approximated by complex images using the Sommerfeld identity. It is found that the closed-form Green's functions are accurate for small and moderate distances and they may detoriate significantly beyond certain distances. Three possible sources of this problem are discussed and clarified the misunderstandings.