Academic Journal of Engineering and Technology Science, 2026, 9(1); doi: 10.25236/AJETS.2026.090110.
Yuhang Liu1, Bo Lyu2
1IC Research and Design Department, Suzhou Link-IC Co., Ltd., Shanghai, China
2FAE Group, Shenzhen CECport Technologies Co., Ltd, Shanghai, China
This project focuses on the design and simulation of antennas for GaN HEMT terahertz receivers. Three types of antennas (two-port asymmetric antenna, 3D butterfly antenna, and fractal butterfly antenna) were designed, and their S-parameter models were analyzed using CST STUDIO SUITE. The models were imported into AWR to simulate the AC response at approximately 4 THz, thereby identifying the fractal butterfly structure as the most effective antenna. Simulation results include S-parameter analysis, verification of the Voltage Standing Wave Ratio (VSWR), and power attenuation measurements. The fractal butterfly antenna achieves optimal performance in directivity, isolation, and near-field enhancement, thereby meeting the requirements of engineering-grade terahertz receivers.
Terahertz antenna; Fractal butterfly structure; S-parameters; VSWR; Responsivity; GaN HEMT
Yuhang Liu, Bo Lyu. Antenna Design and Simulation Analysis for GaN HEMT Terahertz Receivers. Academic Journal of Engineering and Technology Science (2026), Vol. 9, Issue 1: 80-85. https://doi.org/10.25236/AJETS.2026.090110.
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