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International Journal of Antennas and Propagation
Volume 2014 (2014), Article ID 761634, 7 pages
Research Article

Ultrawideband Vivaldi Antenna for DVB-T, WLAN, and WiMAX Applications

Microstrip Department, Electronics Research Institute, Giza 12622, Egypt

Received 3 August 2013; Revised 25 November 2013; Accepted 26 November 2013; Published 5 February 2014

Academic Editor: Abdel Fattah Shetta

Copyright © 2014 Dalia M. Elsheakh and Esmat A. Abdallah. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.


Compact Vivaldi patch antenna with a parasitic meander line is presented in this paper. A PIN diode switch is used to connect and disconnect ultrahigh frequency band (UHF) with ultrawide bandwidth (UWB). The operating frequencies can be switched among different services, depending on the switching states (ON/OFF) to add the lower band when required. This antenna is suitable for portable DVB-T which extended from 450 MHz to 850 MHz receiver applications and the WLAN (Wireless Local Area Network) IEEE 802.11b,g (5.1–5.8) GHz frequency bands and WiMAX band (3.3–3.8) GHz. The measured reflection coefficient of the proposed antenna is compared with the simulated one; good agreement is observed. Also, simulated radiation pattern of the antenna is presented. All simulations are carried out using the EM commercial simulator, high frequency structure simulator (HFSS) ver.13.