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Novel Wideband Directional Dipole Antenna on a Mushroom Like EBG Structure

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2 Author(s)
Azad, M.Z. ; Dept. of Electr. Eng., Univ. of South Carolina, Columbia, SC ; Ali, M.

A new method to design thin wideband directional dipole antennas on electromagnetic bandgap (EBG) structure is introduced. At the heart of this method is the idea to understand and properly utilize the complex interactions between the dipole impedance and the EBG reflection phase characteristics. Using the proposed technique a thin wideband printed dipole is designed, fabricated and tested. The antenna can satisfy applications, such as Digital Communication System (DCS, 1.71-1.88 GHz), Global System for Mobile Communication (GSM, 1.85-1.99 GHz), Personal Communication System (PCS, 1.85-2.05 GHz), Universal Mobile Telecommunication System (UMTS, 1.92-2.17 GHz) and Wireless Local Area Network (WLAN, 2.4-2.485 GHz) within VSWR les 2.5:1. Antenna peak gain varies from 5.5 to 8.3 dBi from 1700 to 2500 MHz while the front to back (F/B) ratio is higher than 15 dB for an overall antenna size of 102 mm by 76.4 mm by 5.9 mm.

Published in:

Antennas and Propagation, IEEE Transactions on  (Volume:56 ,  Issue: 5 )