A Compact Multiband Monopole Antenna With a Defected Ground Plane
| Autor: | Antoniades, Marcos A., Eleftheriades, G. V. |
|---|---|
| Přispěvatelé: | Antoniades, Marcos A. [0000-0002-9699-2387] |
| Rok vydání: | 2008 |
| Předmět: |
Circular disc monopole antenna
Pattern diversity Low-frequency response Random wire antenna Ultrawideband (uwb) antenna Planar monopole antenna Cut out Resonance Defected ground plane Radiation pattern law.invention Optics Frequency response law Electronic engineering Current distribution Dipole antenna Monopole antenna Orthogonality Electrical and Electronic Engineering Multiband Patch antenna Physics Coaxial antenna L-shaped slot business.industry Monopole antennas Ultra-wideband (uwb) Wide-band Antenna grounds Orthogonal current Antenna factor Antenna efficiency Multiband antennas Broadband networks Mobile telecommunication systems Wheeler cap method High frequency response Comparison methods Low frequency business |
| Zdroj: | IEEE Antennas and Wireless Propagation Letters IEEE Antennas Wirel.Propag.Lett. |
| ISSN: | 1548-5757 1536-1225 |
| DOI: | 10.1109/lawp.2008.2007813 |
| Popis: | 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. © 2009 IEEE. 7 Journal Article 652 655 |
| Databáze: | OpenAIRE |
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