Superdirective Wideband Array of Planar Monopole Antenna With Loading Plates
A wideband superdirective array of a two-element planar plate monopole antenna is presented. Initially, a two-element, closely spaced array of a simple rectangular planar monopole antennas is considered. Based on a relative phase shift of 100 between the two elements, over the 3-6-GHz bandwidth this...
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Veröffentlicht in: | IEEE antennas and wireless propagation letters 2010, Vol.9, p.978-981 |
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Format: | Artikel |
Sprache: | eng |
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Zusammenfassung: | A wideband superdirective array of a two-element planar plate monopole antenna is presented. Initially, a two-element, closely spaced array of a simple rectangular planar monopole antennas is considered. Based on a relative phase shift of 100 between the two elements, over the 3-6-GHz bandwidth this antenna array provides directivity of 3.5-6.9 dB. In order to achieve a higher directivity over a wider frequency bandwidth, a pair of small parallel plates is attached to the radiating edges of the rectangular planar monopole antenna. It is shown that this antenna array with element spacing of 2 cm and a relative phase shift of 135 between the elements produces 3.1-7.5 GHz impedance bandwidth with 7.7-10.1 dB of directivity. This antenna has an efficiency of 60%-91% over the bandwidth. Simulation and experimental results are provided and discussed. |
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ISSN: | 1536-1225 1548-5757 |
DOI: | 10.1109/LAWP.2010.2087411 |