异构网络中射频能量收集技术研究与实现
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摘要
异构通信网络中存在大量射频信号,文中设计了一套射频能量收集系统,该系统由中心频率为2. 45 GHz的四阵列层叠耦合贴片微带天线模块、电压倍增器模块、阻抗匹配电路等组成,通过天线参数的选择,电压整流放大,利用可编程最大功率点跟踪技术实现阻抗匹配提高输出功率,验证了无线能量收集并给后级传感器节点供电的可行性。
A large number of radio frequency( RF) signals are existed in the heterogeneous communication network. A radio frequency energy collection system is designed. The system consists of four array laminated coupled patch microstrip antenna module,voltage multiplier module and impedance matching circuit with a central frequency of 2. 45 GHz,and by selecting antenna parameters,voltage rectification and amplification are made. A programmable maximum power point tracking technology is used to achieve impedance matching,thus improving the output power. The results show that the system realizes the wireless energy collection and provides the power supply function of the post stage sensor nodes.
A large number of radio frequency( RF) signals are existed in the heterogeneous communication network. A radio frequency energy collection system is designed. The system consists of four array laminated coupled patch microstrip antenna module,voltage multiplier module and impedance matching circuit with a central frequency of 2. 45 GHz,and by selecting antenna parameters,voltage rectification and amplification are made. A programmable maximum power point tracking technology is used to achieve impedance matching,thus improving the output power. The results show that the system realizes the wireless energy collection and provides the power supply function of the post stage sensor nodes.
引文
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[2] PIRAPAHARAN K,GUNATHILLAKE W,LOKUNARANGODA G I,et al. Design of a battery-less micro-scale RF energy harvester for medical devices[C]∥IEEE-EMBS Conference on Biomedical Engineering and Sciences.IEEE,2012:270-272.
[3] ARRAWATIA M,BAGHINI M S,KUMAR G. RF energy harvesting system from cell towers in 900 MHz band[C]∥National Conference on Communications(NCC). IEEE,2011:1-5.
[4] SIM Z W,SHUTTLEWORTH R,GRIEVE B. Investigation of PCB micro-strip patch receiving antenna for outdoor RF energy harvesting in wireless sensor networks[C]∥Loughborough Antennas&Propagation Conference. IEEE,2009:129-132.
[5] RAO K V S,NIKITIN P V,LAM S F. Antenna design for UHF RFID tags:a review and a practical application[J].IEEE Transactions on Antennas and Propagation,2005,53(12):3870-3876.
[6] LEWIS D R. Circuit design for energy harvesting from digital TV band[D]. Boston:Northeastern University,2012.
[7] ELANZEERY E D M,ELBAGOURI E A S. Novel radio frequency energy harvesting model[C]∥IEEE International Power Engineering and Optimization Conference. IEEE,2012:209-213.
[8] HARRIST D W. Wireless battery charging system using radio frequency energy harvesting[D]. Pittsburgh:University of Pittsburgh,2004.
[9]李明洋. HFSS电磁仿真设计应用详解[M].北京:人民邮电出版社,2010.LI Mingyang. Detailed Application of HFSS Electromagnetic Simulation Design[M]. Beijing:Posts&Telecom Press,2010.(in Chinese)
[10] OZEL O,TUTUNCUOGLU K,YANG J,et al. Transmission with energy harvesting nodes in fading wireless channels:optimal policies[J]. IEEE Journal on Selected Areas in Communications,2011,29(8):1732-1743.
[11] HO C K,ZHANG R. Optimal energy allocation for wireless communications with energy harvesting constraints[J]. IEEE Transactions on Signal Processing,2012,60(9):4808-4818.
[12] ZHANG F,LAU V K N. Closed-form delay-optimal power control for energy harvesting wireless system with finite energy storage[J]. IEEE Transactions on Signal Processing,2014,62(21):5706-5715.
[13] KRIKIDIS I,TIMOTHEOU S,NIKOLAOU S,et al. Simultaneous wireless information and power transfer in modern communication systems[J]. IEEE Communications Magazine,2014,52(11):104-110.
[14] NG D W K,LO E S,SCHOBER R. Wireless information and power transfer:energy efficiency optimization in OFDMA systems[J]. IEEE Transactions on Wireless Communications,2013,12(12):6352-6370.
[15] LIU V,PARKS A,TALLA V,et al. Ambient backscatter:wireless communication out of thin air[C]∥ACM SIGCOMM Computer Communication Review. ACM,2013:39-50.