High-gain metasurface in polyimide on-chip antenna based on CRLH-TL for sub-terahertz integrated circuits

Alibakhshikenari, Mohammad, Virdee, Bal Singh, See, Chan, Abd-Alhameed, Raed, Falcone, Francisco and Limiti, Ernesto (2020) High-gain metasurface in polyimide on-chip antenna based on CRLH-TL for sub-terahertz integrated circuits. Scientific Reports, 10 (4298). pp. 1-9. ISSN 2045-2322

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Abstract / Description

This paper presents a novel on-chip antenna using standard CMOS-technology based on metasurface implemented on two-layers polyimide substrates with a thickness of 500μm. The aluminium ground-plane with thickness of 3μm is sandwiched between the two-layers. Concentric dielectric-rings are etched in the ground-plane under the radiation patches implemented on the top-layer. The radiation patches comprise concentric metal-rings that are arranged in a 3×3 matrix. The antennas are excited by coupling electromagnetic energy through the gaps of the concentric dielectric-rings in the ground-plane using a microstrip feedline created on the bottom polyimide-layer. The open-ended feedline is split in three-branches that are aligned under the radiation elements to couple the maximum energy. In this structure, the concentric metal-rings essentially act as CL that extend the effective aperture area without affecting its dimensions, and the concentric dielectric rings etched in the ground-plane act as LL, which suppress the surface-waves and reduce the substrates losses that leads to improved bandwidth and radiation properties. The overall structure behaves like a metasurface that is shown to exhibit a very large bandwidth of 0.350-0.385THz with an average radiation gain and efficiency of 8.15dBi and 65.71%, respectively. It has dimensions of 6mm×6mm×1mm that makes it suitable for on-chip implementation.

Item Type:	Article
Uncontrolled Keywords:	on-chip antenna; CMOS-technology; CRLH-TL; sub-terahertz integrated circuits
Subjects:	600 Technology > 620 Engineering & allied operations
Department:	School of Computing and Digital Media
Depositing User:	Bal Virdee
Date Deposited:	11 Mar 2020 09:09
Last Modified:	12 Mar 2021 14:19
URI:	https://repository.londonmet.ac.uk/id/eprint/5597

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