Assessing the performance of three type of UWB antennas for FMCW GPR imaging

Martinez, Hansel J.; Alvarez, S.; Yarleque, Manuel A.

doi:10.1109/iceaa.2018.8520505

Cited by 5 publications

(1 citation statement)

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“…The RADAR application can be used for astronomy [8], weather forecasting [9], snow detection [10] [11], ground penetrating radar [12][13], and more applications. Radar applications usually require a transmitter and receiver connected to a high-gain antenna [14]. But for GPR applications, a low-frequency antenna operating between 500 MHz and 3 GHz is required.…”

Section: Introductionmentioning

confidence: 99%

Palm Tree Coplanar Vivaldi Antenna Array on the Same Substrate Size: Design and Performance Evaluation

Nurhayati¹,

Oliveira²,

Yasin³

et al. 2022

IJECS

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This paper aims to describe the performance of the palm tree Coplanar Vivaldi Antenna Array (CVA) that was simulated from 0.25-6.25 GHz in terms of return loss and radiation pattern. Palm Tree Coplanar Vivaldi Antenna is available in four different configurations: single-element, two-element array, four-element array, and an eight-element array. We create a feeding network and radiator patch for two, four, and eight-array antennas. The simulation results demonstrate that the single-element antenna has the best return loss performance and can cover all frequency work from 0.25-6.25 GHz. In contrast, the antenna array can only cover multiband frequency. At 3 GHz, a single-element antenna has a directivity of 8.77 dBi, a sidelobe level of -2.2 dB, and a beamwidth of 63.70. In contrast, an antenna array of 8 elements has a directivity of 15.5 dBi, a sidelobe level of -12.6 dB, and a beamwidth of 80. Using the same substrate size, by configuring the Vivaldi Coplanar antenna to be an array at a frequency of 3 GHz, the 1×8 array antenna has a 6.73dBi improvement in directivity, a 10.4 dB boost in side lobe level, and a 55.70 enhanced in beamwidth performance compared to a single element. According to the simulation findings, the radiation pattern performance of the. Palm Tree CVA is greater than a single element in the same substrate size. Good directivity, SLL, and beamwidth performance make the proposed Palm Tree CVA array suitable for integration in telecommunication, radar, or cognitive radio applications.

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