Broadband wide-angle terahertz antenna based on the application of transformation optics to a Luneburg lens
| Autor: | Hichem Guerboukha, Daniel M. Mittleman, Yasith Amarasinghe, Rabi Shrestha, Rajind Mendis, Martin Koch, Jochen Taiber |
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| Rok vydání: | 2021 |
| Předmět: |
High-gain antenna
Terahertz radiation Computer science Frequency band Science Beam steering Physics::Optics 02 engineering and technology 01 natural sciences Article 010309 optics Optics 0103 physical sciences Broadband 0202 electrical engineering electronic engineering information engineering Path loss Transformation optics Multidisciplinary business.industry 020206 networking & telecommunications Luneburg lens Electrical and electronic engineering Medicine business Applied optics Beam (structure) |
| Zdroj: | Scientific Reports, Vol 11, Iss 1, Pp 1-8 (2021) Scientific Reports |
| ISSN: | 2045-2322 |
| Popis: | The design of antennas for terahertz systems remains a significant challenge. These antennas must provide very high gain to overcome significant free-space path loss, which limits their ability to broadcast or receive a beam over a wide angular range. To circumvent this limitation, here we describe a new device concept, based on the application of quasi-conformal transformation optics to the traditional Luneburg lens. This device offers the possibility for wide-angle beam steering and beam reception over a broad bandwidth, scalable to any frequency band in the THz range. |
| Databáze: | OpenAIRE |
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