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This paper present a frequency reconfigurable antenna with metasurface. This antenna consisted of two substrates with the thickness of 1mm. Metasurface with tunable capacitors is placed on the top layer, while the microstrip feeding line and the ground plane are printed below the metasurface. The working frequencies of the proposed antenna are controlled by a single DC voltage applied on the varactors...
A compact open-slot antenna for bandwidth enhancement is presented. Multiple resonances are generated by using an asymmetrical rectangular patch with the U-shaped open-slot structure. Two bevels are cut on the patch to improve the impedance matching. The proposed antenna provides a wide impedance bandwidth of 122% from 2.95 to 12.1 GHz with 10-dB return loss. It is shown that the impedance bandwidth...
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