Abstract
A resistively loaded wideband slotted patch antenna with optimized performance on lower frequencies is proposed for ground-penetrating radar (GPR) applications. The proposed design is backed by an optimized reflector composed of a periodic array of square loop elements, which enhances the antenna’s gain and directivity. The antenna shows good radiation characteristics and ease of integration with the GPR systems. The proposed structure features a compact size and wide bandwidth covering from 0.6 to 4.6 GHz. The peak gain of 7 dBi is achieved. The fabricated prototype of the antenna along with an integrated optimized reflective surface has overall dimensions of 18 × 22 × 5 cm3. The measured results validate the antenna’s performance in both free space and sandy medium, which enlighten its use for GPR applications.
Highlights
Ground-penetrating radar (GPR) is an important technology developed for short-range radar applications
International Journal of Antennas and Propagation transverse electromagnetic (TEM) horn antenna for aircoupled impulse GPR applications is presented in [4]; it operates in the broad frequency range between 0.6 and 6 GHz
It can be noticed that the antenna shows good parasitic coupling performance at a whole frequency band, except for some late time ringing on higher frequencies
Summary
Received 10 September 2021; Revised 20 October 2021; Accepted 26 October 2021; Published 8 November 2021. A resistively loaded wideband slotted patch antenna with optimized performance on lower frequencies is proposed for groundpenetrating radar (GPR) applications. E proposed design is backed by an optimized reflector composed of a periodic array of square loop elements, which enhances the antenna’s gain and directivity. E antenna shows good radiation characteristics and ease of integration with the GPR systems. E proposed structure features a compact size and wide bandwidth covering from 0.6 to 4.6 GHz. e peak gain of 7 dBi is achieved. E fabricated prototype of the antenna along with an integrated optimized reflective surface has overall dimensions of 18 × 22 × 5 cm. E measured results validate the antenna’s performance in both free space and sandy medium, which enlighten its use for GPR applications A resistively loaded wideband slotted patch antenna with optimized performance on lower frequencies is proposed for groundpenetrating radar (GPR) applications. e proposed design is backed by an optimized reflector composed of a periodic array of square loop elements, which enhances the antenna’s gain and directivity. e antenna shows good radiation characteristics and ease of integration with the GPR systems. e proposed structure features a compact size and wide bandwidth covering from 0.6 to 4.6 GHz. e peak gain of 7 dBi is achieved. e fabricated prototype of the antenna along with an integrated optimized reflective surface has overall dimensions of 18 × 22 × 5 cm3. e measured results validate the antenna’s performance in both free space and sandy medium, which enlighten its use for GPR applications
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