Journal
IEEE ANTENNAS AND WIRELESS PROPAGATION LETTERS
Volume 15, Issue -, Pages 814-817Publisher
IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
DOI: 10.1109/LAWP.2015.2476345
Keywords
Circular polarization; linear polarization; rectennas; wireless power transmission
Funding
- National Natural Science Foundation of China [61501243]
- Advanced Talent Program of NUIST [2014R070]
- Priority Academic Program Development of Jiangsu Higher Education Institutions
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This letter presents a new rectenna with all-polarization-receiving capability for wireless power transmission applications. By utilizing a dual linearly-polarized antenna, the incident wave of arbitrary polarization can be totally collected at its two ports. To be connected with the antenna as a rectenna, a dual-input rectifier is designed so that the RF power supplied by the two ports of the antenna can be efficiently rectified. With a proper polarization of the incident wave, the proposed rectenna exhibits a maximum efficiency of 78% under the input power density of 295.3 mu W/cm(2). Moreover, under the same power density, the rectenna's efficiency can always stay higher than 61% regardless of the incident wave's polarization.
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