Title :
A compact composite right/left-handed (CRLH) leaky wave antenna composed of 2 × 2 coupled-mushrooms for broadband wireless communications
Author :
Kawakami, Takahiro ; Horii, Yasushi
Author_Institution :
Grad. Sch. of Inf., Kansai Univ., Takatsuki, Japan
Abstract :
This paper presents a compact composite right/left-handed (CRLH) leaky wave antenna (LWA) composed of 2 × 2 coupled-mushrooms for broadband wireless communications. By optimizing gap widths between the mushrooms, the proposed antenna provides following attractive features; 1) a broadband performance from 6.4 GHz to 10.5 GHz is obtained, which fractional bandwidth corresponds to 49 %. 2) a high radiation efficiency of more than 98 % is attained through the entire operation band. 3) The radiation pattern of the antenna shows a weak directivity, which will be useful for high-speed data communications in mobile use. 4) Since the antenna has a planar structure based on a microstrip line configuration, the conventional print circuit board (PCB) facilities can be used for fabrication, leading to low cost antenna production. The overall dimension of the proposed antenna is 50 mm × 70 mm × 3.2 mm including the antenna substrate.
Keywords :
broadband networks; leaky wave antennas; metamaterial antennas; microstrip lines; printed circuits; radio networks; broadband wireless communications; compact composite right/left-handed leaky wave antenna; coupled-mushrooms; high-speed data communications; low cost antenna production; microstrip line configuration; mobile use; planar structure; print circuit board; Antenna radiation patterns; Bandwidth; Broadband antennas; Broadband communication; Leaky wave antennas; Microwave communication; Broadband antennas; Leaky wave antennas; Metamaterials;
Conference_Titel :
Microwave Conference Proceedings (APMC), 2011 Asia-Pacific
Conference_Location :
Melbourne, VIC
Print_ISBN :
978-1-4577-2034-5
