Title :
A novel CRLH ZORA and the enhancement of its bandwidth and efficiency
Author :
Li, Fan ; Li, Zheng ; Wang, Junhong ; Zhang, Zhan ; Chen, Meie
Author_Institution :
Key Lab. of All Opt. Network & Adv. Telecommun. Network of MOE, Beijing Jiaotong Univ., Beijing, China
Abstract :
A novel zeroth-order resonator antenna (ZORA) consisting of novel composite right/left-handed (CRLH) transmission line (TL) structure showing higher compactness is proposed in this paper. The ground of this ZORA is cut partially in order to obtain enhanced bandwidth and efficiency. At the frequency of the zeroth-order mode, the bandwidth can be 200 MHz which is much wider than that of ZORA without enhancement technique. Both of the radiation efficiency and the antenna efficiency are significantly improved compared with those of the initial ZORA. Full-wave method is used in the simulation of the antenna structures. Also, the equivalent-circuit model is employed for analyzing the properties of the antennas.
Keywords :
UHF antennas; UHF resonators; antenna radiation patterns; composite materials; equivalent circuits; metamaterial antennas; metamaterials; microwave antennas; CRLH ZORA; antenna efficiency; antenna structure simulation; bandwidth enhancement; composite right handed-left handed transmission line structure; equivalent circuit model; full wave method; radiation efficiency; zeroth-order resonator antenna; Composite right/left-handed (CRLH) transmission line (TL); metal-insulator-metal (MIM) capacitor; zeroth-order resonator antenna (ZORA);
Conference_Titel :
Cross Strait Quad-Regional Radio Science and Wireless Technology Conference (CSQRWC), 2011
Conference_Location :
Harbin
Print_ISBN :
978-1-4244-9792-8
DOI :
10.1109/CSQRWC.2011.6036988
