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In this paper, we propose a new design of a dual-polarization near-field focused reflective metasurface for wireless power transfer. The reflective metasurface is composed of printed cross-dipole elements with different arm lengths, which is aimed to independently generate focused point with dual-polarization. Numerical simulations demonstrate that the proposed reflective metasurface can focus the...
In this paper, we propose a novel ultra-wideband planar inverse-F antenna (PIFA) using periodic metal patches ground plane. By applying the capacitive compensation for the input impedance of the PIFA in higher frequencies, the proposed PIFA has a working frequency band from 2.3 GHz to 9.0 GHz. The effect of geometric parameters of the periodic metal patches and antenna height on antenna performance...
Power saving in wireless sensor networks (WSNs) has been the focus of much recent research due to the fact that the nodes are usually battery-powered. Wireless communication accounts for a strikingly high proportion of the total power consumption, so we want to reduce the power consumption by adopting a low-power transceiver in the physical layer. IEEE 802.15.4 is a popular communication standard...
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