Title :
Dual-band microstrip leaky-mode antenna of similar radiation characteristics
Author :
Wu, Ching-Kuo ; Tzuang, Ching-Kuang C.
Author_Institution :
Inst. of Electr. Commun. Eng., Nat. Chiao Tung Univ., Hsinchu, Taiwan
Abstract :
This paper presents a dual-band leaky-mode antenna of similar radiation characteristics using the recently developed electric-magnetic-electric (EME) microstrip. The magnetic surface made of an array of PBG cells shows a high-impedance state in the stopbands of 10.6 GHz and 22.5 GHz, observed from the surface-wave dispersion relation computed by the finite-element method. The dispersion diagram of the EME microstrip at the first higher order (EHt), obtained by matrix-pencil analyses and validated experimentally by measured radiation patterns, indicates the strong radiation behavior with fan beam patterns at two frequency bands of 5.25 GHz and 12.35 GHz.
Keywords :
antenna radiation patterns; dispersion (wave); electric impedance; finite element analysis; leaky wave antennas; matrix algebra; microstrip antennas; multifrequency antennas; photonic band gap; surface electromagnetic waves; 5.25 to 22.5 GHz; PBG cells; dual-band antenna; electric-magnetic-electric microstrip; fan beam radiation patterns; finite-element method; leaky-mode antenna; matrix-pencil analyses; microstrip antenna; photonic band gap; surface-wave dispersion relation; Coils; Dielectric substrates; Dispersion; Dual band; Finite element methods; Frequency; Microstrip antennas; Permittivity; Photonic band gap; Tellurium;
Conference_Titel :
Antennas and Propagation Society International Symposium, 2002. IEEE
Print_ISBN :
0-7803-7330-8
DOI :
10.1109/APS.2002.1018234
