Abstract
This paper presents an antenna of loaded with metamaterial to enhance the gain and directivity of antenna to improve the performance of the ground-penetrating radar system (GPR). By adjusting the parameters of the antenna to change the antenna equivalent capacitance, inductance, and designed the operating frequency of 0.5GHz-1.2GHz ultra-wideband antenna. On the basis of this operating frequency, we also designed the corresponding negative permittivity and permeability materials, and realized the design and simulation of patch antenna and material working in the 1GHz frequency band. The high gain and directivity of the antenna loaded with single negative material are verified by simulation. Compared to the original antenna increased the maximum gain of 7dB, the direction has also been greatly improved.
Highlights
Metamaterials are a type of new artificial electromagnetic material
Metamaterials have been widely used in various fields such as various special antenna designs [6,7,8,9,10], optical imaging [11], electromagnetic wave stealth, subwavelength waveguide devices [12], leaky wave elements [13], and many others
The metamaterials loading on the antenna can result in antenna miniaturization, wide passband, high gain, and other functions
Summary
Abstract—This paper presents an antenna loaded with metamaterial to enhance its gain and directivity to improve the performance of a ground-penetrating radar system (GPR). We adjusted the parameters of the antenna to change its equivalent capacitance and inductance and applied an operating frequency of 0.5 GHz-1.2 GHz to create an ultra-wideband antenna. On the basis of this operating frequency, we designed the corresponding negative permittivity and permeability materials to simulate a patch antenna and material in a 1 GHz frequency band. The high gain and directivity of the antenna loaded with single-negative material were verified by simulation. Compared to the original antenna, the maximum gain increased by 7 dB and its directivity was greatly improved
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