DocumentCode
1040106
Title
Unidirectional Antenna With Loaded Dielectric Substrate
Author
Siu, Lam ; Luk, Kwai-Man
Author_Institution
City Univ. of Hong Kong, Hong Kong
Volume
7
fYear
2008
fDate
6/30/1905 12:00:00 AM
Firstpage
50
Lastpage
53
Abstract
A unidirectional antenna with loaded dielectric substrate composed of two shorted-circuited rectangular patches and a printed Gamma-shaped probe feed operated at 2.5 GHz is presented. The antenna is fully filled with dielectric substrate isinr = 2.65. The height of the antenna is only 18 mm. A wide impedance bandwidth of 45.3% (SWR les 2) is achieved. The average gain is about 6.7 dBi. The antenna performance can be improved by introducing of a metallic wall. The backlobe is reduced from -11.1 to -20.1 dB at the lower frequency.
Keywords
antenna feeds; dielectric-loaded antennas; directive antennas; microstrip antennas; frequency 2.5 GHz; loaded dielectric substrate; printed Gamma-shaped probe feed; shorted-circuited rectangular patch; unidirectional antenna; Dipole; dipole; shorted- circuited patch; shorted-circuited patch; wideband antenna and low back radiation;
fLanguage
English
Journal_Title
Antennas and Wireless Propagation Letters, IEEE
Publisher
ieee
ISSN
1536-1225
Type
jour
DOI
10.1109/LAWP.2008.916691
Filename
4435060
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