Comparative efficiency and power assessment of optical photoconductive material-based terahertz sources for wireless communication systems
| Autor: | Lluis Jofre, Ayhan Yazgan, Jordi Romeu |
|---|---|
| Přispěvatelé: | Universitat Politècnica de Catalunya. Departament de Teoria del Senyal i Comunicacions, Universitat Politècnica de Catalunya. ANTENNALAB - Grup d'Antenes i Sistemes Radio |
| Jazyk: | angličtina |
| Rok vydání: | 2019 |
| Předmět: |
Enginyeria de la telecomunicació::Telemàtica i xarxes d'ordinadors [Àrees temàtiques de la UPC]
Terahertz radiation Computer science OPM 02 engineering and technology optical photoconductive material-based antennas wireless terahertz communications Efficient terahertz source Wireless communication systems HBT 0202 electrical engineering electronic engineering information engineering Bandwidth (computing) Wireless Electrical and Electronic Engineering business.industry Photoconductivity 020208 electrical & electronic engineering CMOS Electrical engineering 020206 networking & telecommunications General Medicine terahertz power Variety (cybernetics) Power (physics) Comunicació sense fil Sistemes de Hardware and Architecture QCL business RTD |
| Zdroj: | Recercat. Dipósit de la Recerca de Catalunya instname UPCommons. Portal del coneixement obert de la UPC Universitat Politècnica de Catalunya (UPC) |
| ISSN: | 0218-1266 |
| Popis: | Electronic version of an article published as [Journal of Circuits, Systems and Computers, vol. 28, num. 1, 2018] [https://doi.org/10.1142/S0218126619500051] © [copyright World Scientific Publishing Company] [https://www.worldscientific.com/worldscinet/jcsc] Terahertz band has recently attracted the attention of the communication society due to its huge bandwidth and very high-speed wireless communications capability. It has been utilized in a variety of disciplines including physics, biology and astronomy for years; and the main concerns have always been obtaining highly efficient and high-power terahertz sources. Today, these problems are still the most important issues in establishing an operable wireless terahertz communication link. In this paper, recent studies in the field of terahertz source design are investigated based on the terahertz output power and efficiency. Solid-state sources and optical sources were comparatively reviewed with optical photoconductive material (OPM)-based methods which are combined with the terahertz antennas in the design phase generally. For wireless communication, the most suitable frequencies are between 0.3THz and 1THz due to the attenuation profile of the atmosphere. For this reason, based on the recently published studies, it has been observed that OPM and resonant tunneling diode-based sources are the most promising terahertz sources in terms of efficiency and power. Key issues and the main problems of terahertz photoconductive antennas which are the base of OPM method were also discussed in this paper. |
| Databáze: | OpenAIRE |
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