Abstract
•A rectangular slot with inner circular ring patch and partial ground plane based broadband monopole patch antenna, with a microwave brain imaging system focused on nine antennas has been mentioned to identify an undesirable tumor in the brain.•The emanating part of an antenna is adjusted to increase the electrical length by chopping the slot from both the patch and the ground plane. At starting frequency of 1.9 GHz, the designed antenna has an electrical range of 0.253λ × 0.190λ × 0.010λ.•The antenna's FBW (% BW) estimated is 67.67%. The estimated max gains and efficiency respectively 5.2 dBi and >90%. The antenna includes a better response with respect to the group-delay (GD) and fidelity-factor (FF, 96.26%) for the time domain evaluation.•During the entire research, experimental and numerical results are reviewed, which show that the antenna proposed is ideal for imaging applications.•To evaluate the functionality of the one antenna and the array antenna, a 3D-realistic Hugo-head model is equipped with either a single antenna or a 9-antenna array setup and reviewed EM-field along with tumor-bearing and tumor-free head.
In this article, a rectangular slot with an inner circular ring patch and a partial ground plane-based broadband monopole patch antenna, with a microwave brain imaging system focused on nine antennas, has been mentioned to identify an undesirable tumor in the brain. The emanating part of an antenna is adjusted to increase the electrical length by chopping the slot from both the patch and the ground plane. At starting frequency of 1.9 GHz, the designed antenna has an electrical range of 0.253λ × 0.190λ × 0.010λ. All of the necessary simulations for antenna structure development and refinement are performed in the CST-studio suite. Full findings reveal that the planned miniaturized antenna does have a 1.9 GHz bandwidth (1.90–3.80 GHz) with near-omnidirectional patterns. The antenna's FBW (% BW) estimated is 67.67%. Respectively, the estimated maximum gain and efficiency are 5.2 dBi and >90%. The antenna includes a better response to the group delay (GD) and fidelity factor (FF, 96.26%) for the time domain evaluation. During the entire research, experimental and numerical results are reviewed, showing that the proposed antenna is ideal for imaging applications. To evaluate the functionality of the one antenna and the array antenna, a 3D-realistic Hugo-head model is equipped with either a single antenna or a 9-antenna array setup and reviewed EM-field along with tumor-bearing and tumor-free head. Finally, the imaging performance is investigated with a brain tumor object inside the Hugo phantom using the MERIT open-source software. The analysis of imaging shows that the tumor object is identified through the proposed nine antenna-based imaging setup. The SAR (Specific Absorption Rate) approaches a maximum of < 0.7 W/kg over the operating range, which reaffirms antenna safety for biomedical use.
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