Abstract—Lens antennas are considered promising antenna structures for next-generation communication systems due to their high radiation characteristics, low Side-Lobe Level (SLL), and ability to generate multiple beams. In this paper, the authors propose using the modified Polyphenylene Ether (PPE) lens antenna with Matching Layers (MLs) applied to both the inner and outer surfaces of four lens structures: hyperbolic, plano-convex, Abbe sine condition, and straightline condition. Through the analysis and evaluation of the simulation results, it can be observed that the proposed lens antenna structures with matching layers exhibit high gain values, superior to those of lens antenna structures without matching layers. The maximum gain of the lens antenna with the Abbe sine condition is 27.83 dBi, while the maximum gain values of the plano-convex, hyperbolic, and straight-line lens antennas are 27.82 dBi, 27.73 dBi, and 27.74 dBi, respectively. Additionally, in this paper, the authors set up multiple feed horns along a defined trajectory. The results show that the lens antenna with matching layers is capable of generating multiple beams, with a maximum gain of 22.77 dBi at an incident angle of 45°.

Cite: Nguyen Thi Dieu Linh, Phan Van Hung, Nguyen Quoc Dinh, and T. V. Luyen, “A Research on PPE Lens Antennas with Matching Layers for Multi-Beam Generation," Journal of Communications, vol. 20, no. 4, pp. 394-402, 2025.

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