Title :
A novel archimedean spiral antenna with uniplanar EBG substrate
Author :
Ding, Chaoyuan ; Ruan, Chengli ; Peng, Ling ; Chu, Jiahui
Author_Institution :
Inst. of Appl. Phys., Univ. of Electron. Sci. & Technol. of China, Chengdu
Abstract :
A gap-loading Archimedean spiral antenna with uniplanar EBG is presented in this paper. Utilization of the gap-loading technique offers an antenna lowest operation frequency reduction of more than 0.5 GHz. The uniplanar EBG is of benefit to reduce the height about 60%, including the thickness of EBG structure, compare to the traditional lambda/4 cavity backed implementation of Archimedean spiral antenna. Further investigations indicate that the radiation patterns and 3 dB angular width are both stable in the range of 2 GHz-5 GHz.
Keywords :
UHF antennas; antenna radiation patterns; microwave antennas; photonic band gap; spiral antennas; Archimedean spiral antenna; cavity backed implementation; frequency 2 GHz to 5 GHz; gap-loading technique; operation frequency reduction; radiation patterns; uniplanar EBG substrate; Antenna radiation patterns; Bandwidth; Broadband antennas; Frequency; Impedance matching; Metamaterials; Optical reflection; Periodic structures; Reflector antennas; Spirals;
Conference_Titel :
Antennas, Propagation and EM Theory, 2008. ISAPE 2008. 8th International Symposium on
Conference_Location :
Kunming
Print_ISBN :
978-1-4244-2192-3
Electronic_ISBN :
978-1-4244-2193-0
DOI :
10.1109/ISAPE.2008.4735207
