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A polarization reconfigurable antenna using metasurface superstrate is proposed in this paper. The proposed antenna consists of a planar coupling slot with an array of metallic rectangular patches with PIN diodes which can be view as a reconfigurable metasurface superstrate, and a DC bias controlling circuit. When the PIN switches are OFF, the antenna can produce left-hand circular polarized (LHCP)...
This paper describes the performance of a multi-band antenna with a Partially Reflective Surface (PRS) printed underneath the substrate to reduce the level of Specific Absorption Rate (SAR). The frequency band considered ranges from 850 MHz to 977 MHz and from 1.7 GHz to 2.1 GHz. The multi-band antenna placed above an FR4 substrate with the PRS printed below was found to reduce the 1-g average SAR...
A Ka-band reflectarray consists of modified cross loop is investigated in this paper. The reflectarray consists of 30 × 30 unit cells and covering an area of 15cm × 15 cm. The unit cell is composed of a solid cross inside and a cross loop outside. Varying the lengths of the cross can lead to nearly 550o linear phase shift curve. Using this technique, a single layer reflectarray that has a wider bandwidth...
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