AN ULTRA-WIDEBAND ANTENNA FOR THE REINFORCED CONCRETE DETECTION  

作　　者：Shao Jinjin Xia Zhenghuan Ji Yicai Fang Guangyou Yin Hejun 

机构地区：[1]Key Laboratory of Electromagnetic Radiation and Sensing Technology [2]University of Chinese Academy of Sciences [3]Chinese Academy of Sciences

出　　处：《Journal of Electronics(China)》2013年第6期547-552,共6页电子科学学刊（英文版）

基　　金：Supported by the National High Technology Research and Development Program(No.2012AA061403)

摘　　要：In this paper,an Ultra-Wideband(UWB) planar antenna is proposed for the reinforced concrete detection,which consists of a pair of planar waterdrop arms,a microstrip to coplanar parallel-strips transition and a shallow rectangular cavity.In order to overcome the disadvantages of the shallow cavity,some absorbing material is loaded to weaken the narrow-band effect of the cavity and the crosstalk interference.The simulated and measured results show that the proposed antenna has a large bandwidth from 0.48 GHz to 3.6 GHz with Voltage Standing Wave Ratio(VSWR) below 2 and a fractional bandwidth about 200% under the center frequency of 1.6 GHz,directional radiation characteristics and small late-time ringing in the time domain,which can be suitable for nondestructive detection of the reinforced concrete.In this paper, an Ultra-Wideband （UWB） planar antenna is proposed for the reinforced concrete detection, which consists of a pair of planar waterdrop arms, a microstrip to coplanar par- allel-strips transition and a shallow rectangular cavity. In order to overcome the disadvantages of the shallow cavity, some absorbing material is loaded to weaken the narrow-band effect of the cavity and the crosstalk interference. The simulated and measured results show that the proposed antenna has a large bandwidth from 0.48 GHz to 3.6 GHz with Voltage Standing Wave Ratio （VSWR） below 2 and a fractional bandwidth about 200% under the center frequency of 1.6 GHz, directional radiation char- acteristics and small late-time ringing in the time domain, which can be suitable for nondestructive detection of the reinforced concrete.

关 键 词：Ultra-Wideband （UWB） antenna CAVITY BALUN Voltage Standing Wave Ratio （VSWR） 

分 类 号：TN957[电子电信—信号与信息处理]