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Alibakhshikenari, Mohammad, Virdee, Bal Singh, See, Chan, Abd-Alhameed, Raed, Falcone, Francisco, Limiti, Ernesto and Parchin, Naser Ojaroudi (2020) High performance metasurface-based on-chip antenna for terahertz integrated circuits. In: 2020 Third International Workshop on Mobile Terahertz Systems (IWMTS), 2-3 July 2020, Essen, Germany.
This paper presents a simple prototype of a metasurface-based on-chip antenna operating in 0.3-0.32THz. The proposed structure is constructed from two layers of polyimide-substrates with thickness of 0.1mm that sandwich a middle metallic ground-plane layer of 50-micron thickness. A series of linear slots of varying lengths are etched on the radiation patches of the top-layer to create a metasurface. This is shown to enhance the antenna’s effective aperture area that improves its radiation performance without affecting the overall antenna’s footprint. To reduce the surface-waves and substrate-losses a meander-line slits has realized inside the ground-plane. The antenna is fed by an open-ended microstrip feedline located on the bottom-layer. The feedline consists of three-branches that are aligned under each radiation patch to achieve the maximum electromagnetic (EM) transfer from bottom-side of the bottom layer to the topside of the top-layer. Coupling of the EM energy from the bottom-layer to the top-layer is via meander-line slits introduced between the two layers. Simulation results show improvement in the antenna’s impedance bandwidth, gain and efficiency.
Available under License Creative Commons Attribution Non-commercial No Derivatives 4.0.
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