Study on Improvement of the Performance Parameters of a Novel 0.41-0.47 THz On-Chip Antenna Based on Metasurface Concept Realized on 50um GaAs-Layer

Alibakhshikenari, Mohammad; Virdee, Bal. S.; See, Chan H.; Shukla, Pancham; Salekzamankhani, Shahram; Abd-Alhameed, Raed; Falcone, Francisco; Limiti, Ernesto

Abstract

A feasibility study is presented on the performance parameters of a novel on-chip antenna based on metasurface technology at terahertz band. The proposed metasurface on-chip antenna is constructed on an electrically thin high-permittivity gallium arsenide (GaAs) substrate layer. Metasurface is implemented by engraving slot-lines on an array of 11×11 circular patches fabricated on the top layer of the GaAs substrate and metallic via-holes implemented in the central patch of each row constituting the array, which connects the patch to the leaky-wave open-ended feeding slot-lines running underneath the patches. The slot-lines are connected to each other with a slit. A waveguide port is used to excite the array via slot-lines that couple the electromagnetic energy to the patches. The metasurface on-chip antenna is shown to exhibit an average measured gain in excess of 10 dBi and radiation efficiency above 60% over a wide frequency range from 0.41 THz to 0.47 THz, which is significant development over other on-chip antenna techniques reported to date. Dimensions of the antenna are 8.6×8.6×0.0503 mm3. The results show that the proposed GaAs-based metasurface on-chip antenna is viable for applications in terahertz integrated circuits.

Citation

Alibakhshikenari, M., Virdee, B. S., See, C. H., Shukla, P., Salekzamankhani, S., Abd-Alhameed, R., Falcone, F., & Limiti, E. (2020). Study on Improvement of the Performance Parameters of a Novel 0.41-0.47 THz On-Chip Antenna Based on Metasurface Concept Realized on 50um GaAs-Layer. Scientific Reports, 10(1), Article 11034. https://doi.org/10.1038/s41598-020-68105-z

• Journal Article Type: Article
• Acceptance Date: Jun 16, 2020
• Online Publication Date: Jul 3, 2020
• Publication Date: Jul 3, 2020
• Deposit Date: Jun 16, 2020
• Publicly Available Date: Jul 3, 2020
• Electronic ISSN: 2045-2322
• Publisher: Nature Publishing Group
• Peer Reviewed: Peer Reviewed
• Volume: 10
• Issue: 1
• Article Number: 11034
• DOI: https://doi.org/10.1038/s41598-020-68105-z
• Keywords: Terahertz (THz), on-chip antenna, metasurface, wide bandwidth, gallium arsenide (GaAs) layer, leaky-wave open-ended feeding slot-lines
• Public URL: http://researchrepository.napier.ac.uk/Output/2668539