Dual-Beam Filtering Patch Antennas for Wireless Communication Application

A dual-beam filtering patch antenna consisting of a slotted patch, a metal strip underneath the patch, two pins, and a ground plane is proposed for wireless communication application. A wide operation band with stable symmetrical dual-beam far-field radiation pattern is obtained, and two radiation n...

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Bibliographic Details
Published in:IEEE transactions on antennas and propagation 2018-07, Vol.66 (7), p.3730-3734
Main Authors: Li, Jian-Feng, Chen, Zhi Ning, Wu, Duo-Long, Zhang, Gary, Wu, Yan-Jie
Format: Article
Language:English
Subjects:
Antenna radiation patterns
Beams (radiation)
Dual-beam antenna
Filtering
filtering antenna
Filtration
Ground plane
Metals
patch antenna
Patch antennas
Pins
Reflectance
Strips
wideband antenna
Wireless communication
Wireless communications
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Summary:A dual-beam filtering patch antenna consisting of a slotted patch, a metal strip underneath the patch, two pins, and a ground plane is proposed for wireless communication application. A wide operation band with stable symmetrical dual-beam far-field radiation pattern is obtained, and two radiation nulls at the lower and the upper band edges, respectively, are controlled to ensure a sharp rolloff rate at the band edges for both reflection coefficient and realize gain. Undesired higher modes can be suppressed over the stopband by changing the spacing between the patch and ground pane With entire height of 0.058~\lambda _{0} , the proposed antenna is implemented to show a −10 dB bandwidth of 3.0-3.8 GHz, a consistent realized gain of about 6.8 dBi within the passband for both two radiation beams directed at ±30°, out-of-band radiation suppression level of higher than 17 dBi, and good band-edge selectivity.
ISSN:0018-926X
1558-2221
DOI:10.1109/TAP.2018.2835519