Title :
Bandwidth enhancement and cell size reduction for a EBG superstrate using defect mode characteristics
Author :
Kim, June-hyong ; Lee, Hong-Min
Author_Institution :
Kyonggi Univ., Suwon, South Korea
Abstract :
In this paper, 3 layered EBG superstrate structure with 13 times 13 unit cells is proposed. The unit cell is consists of two annular ring and an annular ring slot in the vertical direction. By the introduction of defects in the structure, the radiation bandwidth can be enhanced and unit cell size is reduced. The fabricated EBG superstrate shows the gain enhancement of 3 dBi - 5.4 dBi, compared to that of the antenna only case. These technique can be used to design a EBG superstrate structure below 3 GHz frequency region, effectively.
Keywords :
antenna radiation patterns; loop antennas; photonic band gap; EBG superstrate; annular ring slot; antenna; bandwidth enhancement; cell size reduction; defect mode characteristics; radiation bandwidth; Antenna measurements; Bandwidth; Broadband antennas; Dielectrics; Dipole antennas; Frequency selective surfaces; Impedance measurement; Metamaterials; Periodic structures; Photonic band gap;
Conference_Titel :
Antennas and Propagation Society International Symposium, 2009. APSURSI '09. IEEE
Conference_Location :
Charleston, SC
Print_ISBN :
978-1-4244-3647-7
DOI :
10.1109/APS.2009.5171526
