A novel wide-band slot antenna for ground penetrating radar

2008 ◽  
Author(s):  
S.K. Gunnala ◽  
Mingyu Lu ◽  
J.W. Bredow ◽  
S. Tjuatja
Keyword(s):  
Ground Penetrating Radar ◽  
Wide Band ◽  
Slot Antenna ◽  
Ground Penetrating

scholarly journals Compensation of Dispersion in Sinuous Antennas for Polarimetric Ground Penetrating Radar Applications

2019 ◽  
Vol 11 (16) ◽  
pp. 1937 ◽  
Author(s):  
Dylan A. Crocker ◽  
Waymond R. Scott
Keyword(s):  
Ground Penetrating Radar ◽  
Dispersion Model ◽  
Wide Band ◽  
Design Parameters ◽  
Antenna Performance ◽  
Sinuous Antenna ◽  
Low Profile ◽  
Antenna Phase ◽  
Ground Penetrating ◽  
Sinuous Antennas

In order to improve the accuracy of subsurface target classification with ground penetrating radar (GPR) systems, it is desired to transmit and receive ultra-wide band pulses with varying combinations of polarization (a technique referred to as polarimetry). The sinuous antenna exhibits such desirable properties as ultra-wide bandwidth, polarization diversity, and low-profile form factor, making it an excellent candidate for the radiating element of such systems. However, sinuous antennas are dispersive since the active region moves with frequency along the structure, resulting in the distortion of radiated pulses. This distortion may be compensated in signal processing with accurately simulated or measured antenna phase information. However, in a practical GPR, the antenna performance may deviate from that simulated, accurate measurements may be impractical, and/or the dielectric loading of the environment may cause deviations. In such cases, it may be desirable to employ a simple dispersion model based on antenna design parameters which may be optimized in situ. This paper explores the dispersive properties of the sinuous antenna and presents a simple, adjustable, model that may be used to correct dispersed pulses. The dispersion model is successfully applied to both simulated and measured scenarios, thereby enabling the use of sinuous antennas in polarimetric GPR applications.

Ultra-wideband and high gain antipodal tapered slot antenna with planar metamaterial lens

2021 ◽  
pp. 1-11
Author(s):  
Ziye Wang ◽  
Zhengwei Yang ◽  
Xiao Zhao ◽  
Linyan Guo ◽  
Minjie Guo
Keyword(s):  
Ground Penetrating Radar ◽  
Imaging System ◽  
Single Layer ◽  
High Gain ◽  
Ultra Wideband ◽  
Slot Antenna ◽  
Impedance Bandwidth ◽  
Planar Lens ◽  
Unit Cells ◽  
Ground Penetrating

Abstract To solve the problems of low gain, narrow bandwidth, and poor radiation directivity of conventional ground penetrating radar antenna, this paper proposes an ultra-wideband and high-gain antipodal tapered slot antenna (ATSA) with planar metamaterial lens. As a constituent part of this lens, a new non-resonant metamaterial unit cell is introduced and analyzed by the full-wave simulation tool. The single-layer planar lens composed of the designed unit cells with different sizes is placed in the maximum radiation direction of the ATSA to greatly enhance its radiation capability. The proposed planar lens antenna has a wide impedance bandwidth of 107.4% (2.41–8 GHz) and −3 dB gain bandwidth of 54.5% (4–7 GHz), respectively. The gain increases averagely by 6.0 dB in the whole operating frequency band, and the peck gain reaches 15.4 dBi at 5.5 GHz. And its excellent performance shows a high application prospect in ground penetrating radar and microwave imaging system.

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