A compact multiband monopole antenna with a defected ground plane

Antoniades, M. A. and Eleftheriades, G. V. (2008) A compact multiband monopole antenna with a defected ground plane. IEEE Antennas and Wireless Propagation Letters, 7 Article # 2007813: 652-655. doi:10.1109/LAWP.2008.2007813

Author Antoniades, M. A.
Eleftheriades, G. V.
Title A compact multiband monopole antenna with a defected ground plane
Journal name IEEE Antennas and Wireless Propagation Letters   Check publisher's open access policy
ISSN 1536-1225
Publication date 2008
Sub-type Article (original research)
DOI 10.1109/LAWP.2008.2007813
Volume 7
Issue Article # 2007813
Start page 652
End page 655
Total pages 4
Place of publication Piscataway, NJ, United States
Publisher I E E E
Language eng
Formatted abstract
A compact multiband antenna is proposed that consists of a printed circular disc monopole antenna with an L-shaped slot cut out of the ground, forming a defected ground plane. Analysis of the current distribution on the antenna reveals that at low frequencies the addition of the slot creates two orthogonal current paths, which are responsible for two additional resonances in the response of the antenna. By virtue of the orthogonality of these modes the antenna exhibits orthogonal pattern diversity, while enabling the adjacent resonances to be merged, forming a wideband low-frequency response and maintaining the inherent wideband high-frequency response of the monopole. The antenna exhibits a measured -10 dB S11 bandwidth of 600 MHz from 2.68 to 3.28 GHz, and a bandwidth of 4.84 GHz from 4.74 to 9.58 GHz, while the total size of the antenna is only 24 × 28.3 mm. The efficiency is measured using a modified Wheeler cap method and is verified using the gain comparison method to be approximately 90% at both 2.7 and 5.5 GHz.
Keyword Defected ground plane
Planar monopole antenna
Ultrawideband (UWB) antenna
Q-Index Code C1
Q-Index Status Provisional Code
Institutional Status Unknown

Document type: Journal Article
Sub-type: Article (original research)
Collections: ERA 2012 Admin Only
School of Information Technology and Electrical Engineering Publications
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Created: Fri, 02 Dec 2011, 16:18:36 EST by Ms Deborah Brian on behalf of School of Information Technol and Elec Engineering