Metamaterial Based Patch Antenna with Broad Bandwidth and Simple Structures
A patch antenna based on metamaterials of composite split-ring-resonators(CSRRs)and strip gaps is presented.The antenna is constructed by using CSRR structures in forms of circular rings on the patch and employing strip gaps on the ground plane.The signal is fed by a common microstrip line that connects the patch and the input port.The antenna is based on a simple structure of an only one-layer substrate.Rogers RO4350(εr = 3.66)is preferred as the dielectric material of the substrate.The antenna has a compact footprint that is only 0.408λ0 × 0.357λ0 at the lowest operating frequency of 1.7 GHz.The antenna could operate over two bands that are from 1.70 GHz to 2.98 GHz and from 3.99 GHz to 5.34 GHz.The CSRR and strip gaps are combined with the patch and ground to broaden its operating frequencies as well as to enhance its radiation performance via their coupling with the substrate in a different way.The measured impedance of the antenna shows a smooth variation in the vicinity of 50 Ω over the operating bands.This smooth variation enables the antenna to have broad bandwidth.Additionally,its radiation performance is kept favorable with a peak gain of 6.04 dB.The performances of the antenna were characterized computationally and verified experimentally.Good agreements between the simulations and measurements were observed convincing that the antenna could operate over wide bandwidths and radiate effectively with its simple structure and compact size.The presented design is favorable for its broadband as well as good radiation performance with a simple structure that is comprised of only one layer substrate.The antenna is promising for broadband applications that require the operating bands of WCDMA(1920-2170 MHz),WiMAX(2500-2690MHz),Bluetooth(2400-2480MHz)or Wibro(2300-2390MHz).
X.S.Li F.M.Lin D.L.Wu
School of Automation,Guangdong University of Technology,China School of Physics and Optoelectronic Engineering Guangdong University of Technology,China
国际会议
Progress in Electromagnetics Research Symposium 2014(2014年电磁学研究新进展学术研讨会)
广州
英文
2478-2482
2014-08-01（万方平台首次上网日期，不代表论文的发表时间）