T-Ray Photoconductive Antenna Design for Biomedical Imaging Application

Han, R., Abohmra, A. A. Y., Nourinovin, S., Abbas, H. , Ponciano, J., Shi, L.-F., Alomainy, A., Imran, M. and Abbasi, Q. (2023) T-Ray Photoconductive Antenna Design for Biomedical Imaging Application. In: International Microwave & Antennas Symposium (IMAS 2023), Cairo, Egypt, 7-9 Feb 2023, pp. 195-198. ISBN 9781665490757 (doi: 10.1109/IMAS55807.2023.10066897)

Abstract

Photoconductive antennas are promising sources of terahertz (THz) radiation, which is frequently used to investigate and analyze biological organisms. These compact antennas make it possible to generate ultra-broadband pulses and continuously tunable THz transmissions at room temperature without the need for high-power laser sources. Here, a high efficiency spiral THz photoconductive antenna (PCA) is proposed. The design consists of a gallium arsenide (GaAs) substrate and a silicon (Si) hyper hemispherical lens. The proposed design has a radiation efficiency of up to 92.4% between 2.5 and 3.4 THz, with a directivity up to 17.6 dBi. With several current PCA designs as references, comparisons and analyses are made, indicating that the proposed work shows higher efficiency and radiation directivity at a wider band. The design of electrodes and hyper hemispherical lens are demonstrated in the paper. Simulations of contrast designs are shown as well, illustrating a 25%-40% efficiency and 12.8 dB gain increase by this design. Due to its performance and small structure, this antenna is ideal for T-ray medical imaging.

• Item Type: Conference Proceedings
• Status: Published
• Refereed: Yes
• Glasgow Author(s) Enlighten ID: Shi, Dr Ling-Feng and Nourinovin, Miss Shohreh and Ponciano, Professor Joao and Abbas, Dr Hasan and Abbasi, Professor Qammer and Abohmra, Abdoalbaset Ali Yusef and Imran, Professor Muhammad and Han, Ruobin
• Authors: Han, R., Abohmra, A. A. Y., Nourinovin, S., Abbas, H., Ponciano, J., Shi, L.-F., Alomainy, A., Imran, M., and Abbasi, Q.
• College/School: College of Science and Engineering > School of Engineering > Autonomous Systems and Connectivity; College of Science and Engineering > School of Engineering > Electronics and Nanoscale Engineering; College of Science and Engineering > School of Engineering > Systems Power and Energy
• ISBN: 9781665490757
• Copyright Holders: Copyright © 2023 IEEE
• First Published: First published in 2023 International Microwave and Antenna Symposium (IMAS)
• Publisher Policy: Reproduced in accordance with the publisher copyright policy

Related URLs

• Organisation