Title :
A tapered CRLH mushroom-like leaky wave antenna with reduced sidelobe level
Author :
Jacome-Munoz, J.J. ; Gomez-Diaz, Juan Sebastian ; Perruisseau-Carrier, Julien ; Alvarez-Melcon, Alejandro
Author_Institution :
Fraunhofer-Inst. fur Hochfrequenzphysik und Radartechnik FHR, Wachtberg, Germany
Abstract :
A tapered composite right/left-handed (CRLH) leaky-wave antenna (LWA) with reduced sidelobe level (SLL) is presented. A cosine taper design is achieved by simultaneously modifying the longitudinal period and the slot width of the mushroom CRLH structure. The design methodology is based on the use of parametric curves relating the phase and radiation constant of a single unit cell with diverse geometrical parameters. The radiation pattern results of the proposed structure show a significant SLL reduction in comparison with a non-tapered mushroom-like CRLH LWA, demonstrating the validity of the design methodology.
Keywords :
antenna radiation patterns; leaky wave antennas; metamaterial antennas; SLL reduction; cosine taper design; design methodology; diverse geometrical parameters; longitudinal period; mushroom CRLH structure; parametric curves; radiation constant; radiation pattern; reduced sidelobe level; single-unit cell; slot width; tapered CRLH mushroom-like leaky wave antenna; tapered composite right-left-handed LWA; Antenna radiation patterns; Aperture antennas; Leaky wave antennas; Lighting; Composite right/left-handed (CRLH); leaky-wave antennas (LWAs); taper;
Conference_Titel :
Antennas and Propagation (EuCAP), 2014 8th European Conference on
Conference_Location :
The Hague
DOI :
10.1109/EuCAP.2014.6901826