It presents the design of a kind of novel and high-efficient dual-band stacked microstrip patch antennas
based on cavity model theory
the technology of sloting on the surface of the patch
and multiple feed points technology..The property of the microstrip antennas has been numerically simulated using the Finite Difference Time Domain (FDTD) method.By simply tuning the size of the patch and the turning-stub
and inducing the redistribution of the power of the electric field
the production of resonance in the desirable frequency can be achieved.At the same time
the upper layer which is the parasitic element of the under layer is perforated for improving the symmetry of the radiation field and the radiation efficiency.These excellent features
including the small size
the wide band
and the easy achievement of dual-band circular polarization
make the design have promising prospects in the future of wireless communication.
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