Title :
Waveguide slot antenna using high-impedance surface
Author :
Gao, Qiang ; Zhang, Guo-hua ; Yan, Dun-bao ; Yuan, Nai-Chang
Author_Institution :
Sch. of Electron. Sci. & Eng., Nat. Univ. of Defense Technol., Changsha, China
Abstract :
High-impedance surface (HIS) is a kind of electromagnetic bandgap (EBG) structure utilized as a ground plane for two waveguide slot antennas in order to improve their radiation characteristics. As compared to a solid metal ground plane, the results suggest that a high-impedance ground plane (HIGP) can significantly improve the patterns of the slot antennas. The ripples in the E-plane patterns of the slot antennas with a metal ground plane are found to vanish, the back lobes are reduced, and the gains are increased.
Keywords :
antenna radiation patterns; photonic band gap; slot antennas; surface impedance; E-plane patterns; EBG structure; antenna radiation pattern; electromagnetic bandgap structure; high-impedance ground plane; high-impedance surface; slot antenna patterns; solid metal ground plane; waveguide slot antenna; Antenna radiation patterns; Antennas and propagation; Electromagnetic waveguides; Metamaterials; Periodic structures; Photonic band gap; Planar waveguides; Resonance; Slot antennas; Surface waves; High-impedance Ground Plane (HIGP); Radiation Pattern; Waveguide Slot Antenna;
Conference_Titel :
Microwave Conference Proceedings, 2005. APMC 2005. Asia-Pacific Conference Proceedings
Print_ISBN :
0-7803-9433-X
DOI :
10.1109/APMC.2005.1606712
