Title :
Asymmetric ridge waveguide slot antenna using high-impedance surface
Author_Institution :
Frequency Manage. Center, Commanding Commun. Acad., Wuhan, China
Abstract :
High-impedance surface (HIS) is a kind of electromagnetic bandgap (EBG) structure utilized as a ground plane for asymmetric ridge waveguide slot antenna in order to improve its radiation characteristics. As compared to a solid metal ground plane, the results suggest that a high-impedance ground plane (HIGP) can significantly improve the pattern of the slot antenna. The ripples in the E-plane pattern of the slot antenna with a metal ground plane are found to vanish, the back lobes are reduced, and the antenna gains are increased.
Keywords :
antenna radiation patterns; photonic band gap; ridge waveguides; slot antennas; E-plane pattern; EBG structure; antenna lobes; antenna radiation characteristics; asymmetric ridge waveguide slot antenna; electromagnetic bandgap structure; high-impedance ground plane; high-impedance surface; metal ground plane; Antenna radiation patterns; Antennas and propagation; Arrayed waveguide gratings; Electromagnetic waveguides; Periodic structures; Planar waveguides; Rectangular waveguides; Resonance; Slot antennas; Surface waves; High-impedance ground plane (HIGP); Waveguide slot antenna; radiation pattern;
Conference_Titel :
Microwave and Millimeter Wave Technology (ICMMT), 2010 International Conference on
Conference_Location :
Chengdu
Print_ISBN :
978-1-4244-5705-2
DOI :
10.1109/ICMMT.2010.5525257
