Title :
Leaky wave antenna using composite right/left-handed transmission line composed of parallel plate capacitor
Author :
Kitahara, Hideaki ; Michishita, Naobumi ; Yamada, Y.
Author_Institution :
Dept. of Electr. & Electron. Eng., Nat. Defense Acad., Yokosuka, Japan
Abstract :
Small leaky wave antennas (LWA) using composite right/left-handed (CRLH) transmission line (TL) have been investigated to achieve broadband operation. To improve the gain of LWA, this paper proposes the mushroom-shaped unit cell with parallel plate capacitor. The transmission and radiation characteristics are compared with the lumped capacitor model. The bandwidth of 75% and the minimum gain of 2.5 dBi are achieved in the case of three cells (0.4λ).
Keywords :
antenna radiation patterns; broadband antennas; capacitors; leaky wave antennas; metamaterials; CRLH TL; LWA gain; broadband operation; composite right-left-handed transmission line; leaky wave antenna; lumped capacitor model; mushroom-shaped unit cell; parallel plate capacitor; radiation characteristics; transmission characteristics; Antennas; Atmospheric modeling; Bandwidth; Capacitors; Electric fields; Power transmission lines; Scattering parameters;
Conference_Titel :
Electromagnetics, Applications and Student Innovation (iWEM), 2011 IEEE International Workshop on
Conference_Location :
Taipei
Print_ISBN :
978-1-61284-462-6
Electronic_ISBN :
978-1-61284-461-9
DOI :
10.1109/iWEM.2011.6021471
