Affiliation:
1. Department of Electrical Engineering National Changhua University of Education Chang‐Hua Taiwan, ROC
Abstract
AbstractA planar pattern reconfigurable patch antenna is proposed. The proposed antenna is a circular array composed of three radiating elements, and each element can generate a horizontally polarized main beam with a half‐power beamwidth of about 135°. To switch the beam direction, a single‐pole three‐through circuit is designed on the same printed circuit board as the radiating elements, and the total area of the integrated planar antenna is a circular shape of diameter 0.37λ0. A prototype operated at 2.45 GHz is constructed, and the measured results demonstrate that the pattern reconfigurable antenna can give three steerable beams in the E plane, and the gain and the front‐to‐back ratio of each beam are 3.2 dBi and 15 dB, respectively; moreover, an operation bandwidth of more than 10% is also achieved. Simulated analyses are also performed to explain the antenna performances mentioned above, and they have good agreements with the experimental data.
Subject
Electrical and Electronic Engineering,Condensed Matter Physics,Atomic and Molecular Physics, and Optics,Electronic, Optical and Magnetic Materials