Design and Analysis of Ultra-wideband and High Directive THz Photoconductive Vivaldi Antenna

Authors

  • Jawad Yousaf Electrical and Computer Engineering Department, Faculty of Engineering, King Abdulaziz University P.O. Box 80204, Jeddah 21589, Saudi Arabia , 2 Department of Electrical and Computer Engineering, Abu Dhabi University, United Arab Emirates
  • Amira Dhiflaoui University of Tunis El Manar (UTM), National Engineering School of Tunis (ENIT) Communications Systems Laboratory (SysCom), BP 37, Belvédère 1002 Tunis, Tunisia
  • Ali Yahyaoui 3 University of Tunis El Manar (UTM), National Engineering School of Tunis (ENIT) Communications Systems Laboratory (SysCom), BP 37, Belvédère 1002 Tunis, Tunisia 4 Electrical and Electronic Engineering Department, College of Engineering, University of Jeddah P.O. Box 80327, Jeddah 21589, Saudi Arabia
  • Bandar Hakim Electrical and Computer Engineering Department, Faculty of Engineering, King Abdulaziz University P.O. Box 80204, Jeddah 21589, Saudi Arabia
  • Mohamed Zarouan Electrical and Computer Engineering Department, Faculty of Engineering, King Abdulaziz University P.O. Box 80204, Jeddah 21589, Saudi Arabia
  • Wassim Zouch Electrical and Computer Engineering Department, Faculty of Engineering, King Abdulaziz University P.O. Box 80204, Jeddah 21589, Saudi Arabia
  • Taoufik Aguili University of Tunis El Manar (UTM), National Engineering School of Tunis (ENIT) Communications Systems Laboratory (SysCom), BP 37, Belvédère 1002 Tunis, Tunisia
  • Hatem Rmili Electrical and Computer Engineering Department, Faculty of Engineering, King Abdulaziz University P.O. Box 80204, Jeddah 21589, Saudi Arabia

Keywords:

High directivity, log spiral antenna, photoconductive THz antenna, wideband

Abstract

In this work a novel design of an ultrawideband and highly directive Vivaldi photoconductive antenna (PCA) is reported for the first time for the THz sensing and imaging applications. The optical-to-THz conversion efficiency for the enhanced directivity of the reported PCA is enhanced by adding a hemispherical silicon-based lens with the PCA gold electrode and quartz substrate (εr = 3.78, tan δ = 0.0001). The optimization of the antenna design parameters is performed in CST MWS for the frequency range of 1-6 THz. The design antenna has UWB -10 dB impedance and 3-dB AR bandwidths of 6 THz, maximum directivity of 10 dBi and maximum total radiation efficiency of > 40%.

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Published

2020-10-01

How to Cite

[1]
Jawad Yousaf, “Design and Analysis of Ultra-wideband and High Directive THz Photoconductive Vivaldi Antenna”, ACES Journal, vol. 35, no. 10, pp. 1242–1254, Oct. 2020.

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