Title :
Performance enhancement of antennas using PBG structures
Author :
Jiyoung Seo ; Bomson Lee
Author_Institution :
Dept. of Radio Eng., KyungHee Univ., Suwon, South Korea
Abstract :
Various kinds of EM simulations are performed to investigate the stopband characteristics of PBG structures and to verify their usefulness for performance enhancement of antennas. The designed PBG structure at 18 GHz is shown to increase a microstrip antenna gain by 2.6 dB in the E-plane, and to enhance isolation between two patch antennas by 7 dB. The same PBG structure is found to behave as a PMC surface (reflection coefficient=1), thus making a horizontal monopole antenna possible. The designed PBG structure (or high impedance surface) may be used to increase isolation of mobile communication repeater antennas.
Keywords :
UHF antennas; antenna theory; electromagnetic field theory; microstrip antennas; microwave photonics; mobile antennas; monopole antennas; photonic band gap; radio repeaters; 1.8 GHz; E-plane microstrip antenna gain; EM simulations; PBG structures; PMC surface; antenna isolation; antenna performance enhancement; high impedance surface; horizontal monopole antenna; mobile communication repeater antennas; patch antennas; reflection coefficient; stopband characteristics; Equations; Frequency; Microstrip antennas; Photonic band gap; Probes; Rough surfaces; Surface impedance; Surface roughness; Surface waves; Testing;
Conference_Titel :
Antennas and Propagation Society International Symposium, 2003. IEEE
Conference_Location :
Columbus, OH, USA
Print_ISBN :
0-7803-7846-6
DOI :
10.1109/APS.2003.1220407
