Title :
Planar PBG structures and their applications to antennas
Author :
Mollah, M.N. ; Karmakar, N.C.
Author_Institution :
Sch. of Electr. & Electron. Eng., Nanyang Technol. Univ., Singapore
Abstract :
Photonic band gap (PBG) materials are periodic structures which exhibit wide band pass and band rejection properties at microwave frequencies. PBG materials are formed by introducing periodic perturbation such as dielectric rods, holes and patterns in waveguides and PCB substrates. As photon propagation is impeded in a photonic crystal by electrons, so the electromagnetic waves in a PBG material are impeded due to the periodic discontinuity, hence making a slow wave structure. This paper reviews the applications of PBG materials in antenna design. Different PBG configurations and their working principles are described. The role of this novel material in enhancing printed antenna performance is highlighted. The applications include image rejection, gain improvement, suppression of surface wave, ripple suppression in radiation patterns and antenna bandwidth.
Keywords :
microstrip antennas; periodic structures; photonic band gap; reviews; PCB substrates; antenna bandwidth; antenna design; band pass properties; band rejection properties; dielectric rods; gain improvement; holes; image rejection; microwave frequencies; patterns; periodic structures; photonic band gap materials; planar PBG structures; printed antenna performance; radiation pattern; slow wave structure; surface wave suppression; waveguides; Antennas and propagation; Crystalline materials; Dielectric materials; Dielectric substrates; Impedance; Microwave frequencies; Periodic structures; Photonic band gap; Photonic crystals; Wideband;
Conference_Titel :
Antennas and Propagation Society International Symposium, 2001. IEEE
Conference_Location :
Boston, MA, USA
Print_ISBN :
0-7803-7070-8
DOI :
10.1109/APS.2001.959769
