DocumentCode :
768916
Title :
Wideband Microstrip Patch Antenna With U-Shaped Parasitic Elements
Author :
Wi, Sang-Hyuk ; Lee, Yong-Shik ; Yook, Jong-Gwan
Author_Institution :
Dept. of Electr. & Electron. Eng., Yonsei Univ., Seoul
Volume :
55
Issue :
4
fYear :
2007
fDate :
4/1/2007 12:00:00 AM
Firstpage :
1196
Lastpage :
1199
Abstract :
A wideband U-shaped parasitic patch antenna is proposed. Two parasitic elements are incorporated into the radiating edges of a rectangular patch whose length and width are lambdag/2 and lambdag/4, respectively, in order to achieve wide bandwidth with relatively small size. Coupling between the main patch and U-shaped parasitic patches is realized by either horizontal or vertical gaps. These gaps are found to be the main factors of the wideband impedance matching. The proposed antenna is designed and fabricated on a small size ground plane (25 mmtimes30 mm) for application of compact transceivers. The fabricated antenna on a FR4 substrate shows an impedance bandwidth of 27.3% (1.5 GHz) at 5.5 GHz center frequency. The measured radiation patterns are similar to those of a conventional patch antenna with slightly higher gains of 6.4 dB and 5.2 dB at each resonant frequency
Keywords :
antenna radiation patterns; broadband antennas; electromagnetic coupling; impedance matching; microstrip antennas; transceivers; 5.5 GHz; FR4 substrate; U-shaped parasitic element; electromagnetic coupling; impedance matching; radiation pattern; transceiver; wideband microstrip patch antenna; Antenna measurements; Bandwidth; Broadband antennas; Frequency measurement; Gain measurement; Impedance matching; Microstrip antennas; Patch antennas; Transceivers; Wideband; Parasitic patch antenna; U-shaped parasitic patches; wide bandwidth;
fLanguage :
English
Journal_Title :
Antennas and Propagation, IEEE Transactions on
Publisher :
ieee
ISSN :
0018-926X
Type :
jour
DOI :
10.1109/TAP.2007.893427
Filename :
4148087
Link To Document :
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