A simple equivalent circuit model of photoconductive dipole antenna for the study of Terahertz intensity modulation
| Autor: | G. Jemima Nissiyah, M. Ganesh Madhan |
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| Rok vydání: | 2021 |
| Předmět: |
Terahertz radiation
Physics::Optics 02 engineering and technology 01 natural sciences Directivity law.invention 010309 optics Optics law 0103 physical sciences Dipole antenna Electrical and Electronic Engineering Photocurrent Physics Condensed Matter::Other business.industry Photoconductivity Biasing Condensed Matter::Mesoscopic Systems and Quantum Hall Effect 021001 nanoscience & nanotechnology Atomic and Molecular Physics and Optics Electronic Optical and Magnetic Materials Equivalent circuit 0210 nano-technology business Intensity modulation |
| Zdroj: | Optical and Quantum Electronics. 53 |
| ISSN: | 1572-817X 0306-8919 |
| DOI: | 10.1007/s11082-021-02814-1 |
| Popis: | In this paper, a simple equivalent circuit model has been proposed for Ti–Au photoconductive dipole antenna to analyse its intensity modulation and radiation characteristics. The photocurrent and the terahertz emission intensity obtained using the proposed circuit model is verified using numerical method. Further, the equivalent circuit model is integrated with an electromagnetic tool to analyse its radiation characteristics and the photoconductive antenna is found to provide a directivity of 5.89 dBi at 1.58 THz. Intensity modulation of terahertz radiation is analysed using the equivalent circuit model by applying a bias voltage in the form of pulses. The modulated photocurrent output would produce the corresponding emission intensity which can be used for terahertz data transmission. |
| Databáze: | OpenAIRE |
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