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Design of a modified L-probe fed microstrip patch antenna

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3 Author(s)
Jongkuk Park ; R&D Group, LG Innotek Co. Ltd., Yongin, South Korea ; Hyung-gi Na ; Seung-hun Baik

A modified L-probe fed microstrip patch antenna is proposed. By replacing the bent part of an L-probe with a printed strip on a suspended substrate and by placing a radiating patch beneath the substrate, the proposed antenna can be more easily fabricated as a planar antenna. As an example, an antenna with this feed has been fabricated for operation near 2.2 GHz and was found to have a broad impedance bandwidth, like a conventional L-probe antenna. In the whole frequency band, an average gain of 7.8 dBi is achieved. Also, the measured result shows that, although its feed shadows part of the radiating patch, the proposed antenna has a nearly ideal radiation pattern.

Published in:

Antennas and Wireless Propagation Letters, IEEE  (Volume:3 ,  Issue: 1 )