DocumentCode :
2767214
Title :
FDTD analysis of an antenna covered by a dielectric woodpile EBG superstrate
Author :
Lugo, Katherine ; Gomez, Rodney A. ; Lee, Yoonjae ; Farahat, Nader ; Mittra, Raj ; Hao, Yang
Author_Institution :
Polytech. Univ. of Puerto Rico, San Juan
fYear :
2008
fDate :
5-11 July 2008
Firstpage :
1
Lastpage :
4
Abstract :
In this paper we study the antenna/woodpile electronic bandgap (EBG) composite by using the finite difference time domain (FDTD) Method. The near-field as well as far-field performance are examined at different frequencies with a view to realizing enhanced directivity. In addition, the structure is modeled and simulated under plane wave illumination and the scattered fields are computed to gain an understanding of the mechanism of directivity enhancement. Furthermore, a periodic FDTD code is used to model a unit-cell of woodpile to show that the angular response has a sharp drop as we move away from the zenith, which is closely associated to the directivity enhancement at the resonant frequency.
Keywords :
antennas; dielectric materials; finite difference time-domain analysis; FDTD Analysis; antenna; dielectric woodpile EBG superstrate; directivity enhancement; far-field performance; finite difference time domain method; near-field performance; resonant frequency; Computational modeling; Dielectrics; Finite difference methods; Frequency; Lighting; Metamaterials; Periodic structures; Photonic band gap; Scattering; Time domain analysis;
fLanguage :
English
Publisher :
ieee
Conference_Titel :
Antennas and Propagation Society International Symposium, 2008. AP-S 2008. IEEE
Conference_Location :
San Diego, CA
Print_ISBN :
978-1-4244-2041-4
Electronic_ISBN :
978-1-4244-2042-1
Type :
conf
DOI :
10.1109/APS.2008.4619315
Filename :
4619315
Link To Document :
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