Title :
Finite difference time domain analysis of a photonic crystal substrate patch antenna
Author :
Azarinia, Hamidreza ; Tavakoli, Ahad
Author_Institution :
Amirkabir Univ. of Technol., Tehran, Iran
Abstract :
Planar microstrip patch antennas can achieve a wide range of radiation patterns. However, due to surface-wave losses, they have low bandwidth, low gain, and a potential decrease in radiation efficiency. In order to minimize the surface-wave effects, a photonic band gap (PBG) substrate is proposed. The PBG structure significantly diminishes the surface-wave modes and thus improves the gain and far-field radiation pattern and efficiency. Using FDTD, an accurate full wave analysis of surface wave propagation in a rectangular microstrip patch antenna with and without PBG is presented.
Keywords :
antenna radiation patterns; finite difference time-domain analysis; microstrip antennas; microwave materials; photonic band gap; photonic crystals; substrates; surface electromagnetic waves; 11.47 GHz; FDTD; PBG substrate; antenna gain; antenna radiation efficiency; far-field radiation pattern; finite difference time domain analysis; full wave analysis; photonic crystal substrate patch antenna; photonic-band gap substrate; planar microstrip patch antennas; surface wave propagation; surface-wave losses; Antenna radiation patterns; Bandwidth; Finite difference methods; Microstrip antennas; Optical losses; Patch antennas; Photonic band gap; Photonic crystals; Surface waves; Time domain analysis;
Conference_Titel :
Antennas and Propagation Society International Symposium, 2005 IEEE
Print_ISBN :
0-7803-8883-6
DOI :
10.1109/APS.2005.1551424
