Design of Dual Polarized Rectenna for Wireless Power Transmission

• Main Authors: Yi-Ching Huang, 黃怡靜
• Other Authors: Jwo-Shiun Sun
• Format: Others
• Language: zh-TW
• Published: 2013
• Online Access: http://ndltd.ncl.edu.tw/handle/z7mub9

碩士 === 國立臺北科技大學 === 電腦與通訊研究所 === 101 === In this thesis, dual polarized rectenna for the applications of wireless power transmission has been studied. The proposed antenna is operating at microwave frequency which intercepts and receives the RF energy of any polarization wave in free space. Design of the matching network and half-wave voltage doubler rectifier circuits by using the chip components to achieve impedance matching in antenna and rectifying circuit, can also effectively suppress the high order harmonics and down size the circuit size. The overall output DC voltage and conversion efficiency of the designed dual-polarized antenna with a rectifier circuits are measured. The dual-polarized antenna impedance bandwidth meets the specification of ISM(5.725~5.85GHz) and the measured peak gains of the antenna are 6.7~8.3dBi. For the proposed rectenna, the first port maximum voltage is 8.5 volts, the second port maximum voltage is 8.12 volts, and the overall system conversion efficiency up to 86%. The design of the second single-fed 5.8GHz dual-polarized antenna impedance bandwidth meets the specification of ISM(5.725~5.85GHz) and the measured peak gains of the antenna are 4.5~5.7dBi. For the proposed rectenna, the maximum dc voltage and effiency are respectively equal to 79% and 7.38 volts.