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2012 IEEE MTT-S International Microwave Workshop Series on Innovative Wireless Power Transmission: Technologies, Systems, and Applications最新文献

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Latest advances and innovative solutions in antenna array synthesis for microwave wireless power transmission 微波无线电力传输天线阵列合成的最新进展和创新解决方案
2012 IEEE MTT-S International Microwave Workshop Series on Innovative Wireless Power Transmission: Technologies, Systems, and Applications Pub Date : 2012-05-10 DOI: 10.1109/IMWS.2012.6215822
G. Oliveri, P. Rocca, F. Viani, F. Robol, A. Massa
{"title":"Latest advances and innovative solutions in antenna array synthesis for microwave wireless power transmission","authors":"G. Oliveri, P. Rocca, F. Viani, F. Robol, A. Massa","doi":"10.1109/IMWS.2012.6215822","DOIUrl":"https://doi.org/10.1109/IMWS.2012.6215822","url":null,"abstract":"Wireless power transmission (WPT) through microwave beams represents a key technology for the long distance transfer of energy in the absence of a traditional electrical network. Its importance is demonstrated by the increasing research and industrial activities concerned with the design, manufacturing, and prototyping of efficient WPT systems. In this framework, several design methodologies are being investigated for the synthesis of transmitting antenna arrays able to maximize the power beaming efficiency of WPT systems. In this contribution, the state-of-the-art design techniques for WPT arrays are reviewed, and some of the latest advances in this field are discussed.","PeriodicalId":6308,"journal":{"name":"2012 IEEE MTT-S International Microwave Workshop Series on Innovative Wireless Power Transmission: Technologies, Systems, and Applications","volume":"145 1","pages":"71-73"},"PeriodicalIF":0.0,"publicationDate":"2012-05-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"75160835","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 13
Wireless resonance connection employing a single resonator between transmitting and receiving electrically small non-resonant antennas 在发射和接收电小的非谐振天线之间采用单个谐振器的无线谐振连接
2012 IEEE MTT-S International Microwave Workshop Series on Innovative Wireless Power Transmission: Technologies, Systems, and Applications Pub Date : 2012-05-10 DOI: 10.1109/IMWS.2012.6215823
N. Inagaki, T. Tabata, S. Hori
{"title":"Wireless resonance connection employing a single resonator between transmitting and receiving electrically small non-resonant antennas","authors":"N. Inagaki, T. Tabata, S. Hori","doi":"10.1109/IMWS.2012.6215823","DOIUrl":"https://doi.org/10.1109/IMWS.2012.6215823","url":null,"abstract":"Wireless sympathetic connection systems are proposed which employ a single resonator located between two electrically small non-resonant antennas. Symmetric configurations consisting of two equal transmitting and receiving antennas and a resonator are characterized by the equivalent reactive circuits with two inductors and one capacitor in the case of closed path type antennas and with two capacitors and one inductor in the case of open path type antennas. The equivalent circuit constants are identified by the series and parallel resonance frequencies for the even mode excitation and by the low frequency inductance or capacitance for the odd mode excitation. The power transfer efficiency evaluated by the equivalent circuit analysis agrees well with the full wave analysis result, and is 100 percent when the port impedances are matched to the image impedance and the structures are assumed to be lossless. Asymmetric cases of unequal transmitting and receiving antennas are treated, and the theory is applied to the simplified design of HF-RFID systems, where the reader/writer port impedance is 50Ω and the tag port impedance is 3 KΩ. The power transfer efficiency is evaluated in case the antennas and the resonator are made of cupper. It keeps the efficiency larger than -10 dB when the tag antenna moves from the home position by 15 cm horizontally or vertically.","PeriodicalId":6308,"journal":{"name":"2012 IEEE MTT-S International Microwave Workshop Series on Innovative Wireless Power Transmission: Technologies, Systems, and Applications","volume":"29 1","pages":"75-78"},"PeriodicalIF":0.0,"publicationDate":"2012-05-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"78115593","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 2
Reduction of electromagnetic field (EMF) of wireless power transfer system using quadruple coil for laptop applications 笔记本电脑用四重线圈无线电力传输系统的电磁场(EMF)减小
2012 IEEE MTT-S International Microwave Workshop Series on Innovative Wireless Power Transmission: Technologies, Systems, and Applications Pub Date : 2012-05-10 DOI: 10.1109/IMWS.2012.6215821
Seungyoung Ahn, Hyunho Park, Cheol-Seung Choi, Jonghoon J. Kim, Eakhwan Song, Hark Byung Park, Hongseok Kim, Joungho Kim
{"title":"Reduction of electromagnetic field (EMF) of wireless power transfer system using quadruple coil for laptop applications","authors":"Seungyoung Ahn, Hyunho Park, Cheol-Seung Choi, Jonghoon J. Kim, Eakhwan Song, Hark Byung Park, Hongseok Kim, Joungho Kim","doi":"10.1109/IMWS.2012.6215821","DOIUrl":"https://doi.org/10.1109/IMWS.2012.6215821","url":null,"abstract":"In this paper, we proposed an effective coil design for electromagnetic field (EMF) noise reduction from the wireless power transfer system by using quadruple coils in transmitter and receiver for laptop computer application. By using quadruple coils for transmitter and receiver, EMF noise was significantly reduced with negligible change in induced voltage. 3D simulations and the field distributions are shown and the pros and cons are of the quadruple coil designs are discussed.","PeriodicalId":6308,"journal":{"name":"2012 IEEE MTT-S International Microwave Workshop Series on Innovative Wireless Power Transmission: Technologies, Systems, and Applications","volume":"3 1","pages":"65-68"},"PeriodicalIF":0.0,"publicationDate":"2012-05-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"79757232","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 29
Design and measurement of WPT system for various load resistances using oscilloscope 用示波器设计和测量WPT系统的各种负载电阻
2012 IEEE MTT-S International Microwave Workshop Series on Innovative Wireless Power Transmission: Technologies, Systems, and Applications Pub Date : 2012-05-10 DOI: 10.1109/IMWS.2012.6215786
T. Ishida, I. Sugiyama, T. Ishizaki, I. Awai
{"title":"Design and measurement of WPT system for various load resistances using oscilloscope","authors":"T. Ishida, I. Sugiyama, T. Ishizaki, I. Awai","doi":"10.1109/IMWS.2012.6215786","DOIUrl":"https://doi.org/10.1109/IMWS.2012.6215786","url":null,"abstract":"The authors propose a new WPT design and measurement method. A conventional method using VNA has to set input/output ports as 50 ohm. But the input/output resistance of many WPT systems is not 50 ohm. On the other hand, WPT system is designed by 2-stage band pass filter theory with resonator parameters. A new method uses an oscilloscope for the measurement of resonator parameters, such as resonant frequency, Q value and coupling coefficient, which are necessary for WPT design. Because they are calculated from voltage variation measured by an oscilloscope, the method is free from 50 ohm condition. Therefore, the proposed method is suitable for WPT system design with 0 ohm power source and various load resistances.","PeriodicalId":6308,"journal":{"name":"2012 IEEE MTT-S International Microwave Workshop Series on Innovative Wireless Power Transmission: Technologies, Systems, and Applications","volume":"14 1","pages":"199-202"},"PeriodicalIF":0.0,"publicationDate":"2012-05-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"79142077","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
A novel metal detector using the quality factor of the secondary coil for wireless power transfer systems 一种利用二次线圈质量因子的新型无线电力传输系统金属探测器
2012 IEEE MTT-S International Microwave Workshop Series on Innovative Wireless Power Transmission: Technologies, Systems, and Applications Pub Date : 2012-05-10 DOI: 10.1109/IMWS.2012.6215802
S. Fukuda, H. Nakano, Y. Murayama, T. Murakami, O. Kozakai, K. Fujimaki
{"title":"A novel metal detector using the quality factor of the secondary coil for wireless power transfer systems","authors":"S. Fukuda, H. Nakano, Y. Murayama, T. Murakami, O. Kozakai, K. Fujimaki","doi":"10.1109/IMWS.2012.6215802","DOIUrl":"https://doi.org/10.1109/IMWS.2012.6215802","url":null,"abstract":"A novel foreign-metal detection-system for wireless power transfer (WPT) is described. Foreign metal was heated only when placed between the primary coil and the secondary coil. By having the metal in that position, the quality factor of the secondary coil (Q2) decreased rather than other parameters, so Q2 was a suitable parameter for detecting the metal. We developed s Q2 measurement circuit that works without any battery in the secondary device, and also developed a prototype WPT system with the Q2 measurement circuit. Using this system, foreign metal that might be heated could be detected before heating.","PeriodicalId":6308,"journal":{"name":"2012 IEEE MTT-S International Microwave Workshop Series on Innovative Wireless Power Transmission: Technologies, Systems, and Applications","volume":"310 1","pages":"241-244"},"PeriodicalIF":0.0,"publicationDate":"2012-05-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"76447952","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 45
3-D free-access WPT system for charging movable terminals 用于移动终端充电的三维自由接入WPT系统
2012 IEEE MTT-S International Microwave Workshop Series on Innovative Wireless Power Transmission: Technologies, Systems, and Applications Pub Date : 2012-05-10 DOI: 10.1109/IMWS.2012.6215797
T. Ishizaki, S. Nojiri, T. Ishida, I. Awai
{"title":"3-D free-access WPT system for charging movable terminals","authors":"T. Ishizaki, S. Nojiri, T. Ishida, I. Awai","doi":"10.1109/IMWS.2012.6215797","DOIUrl":"https://doi.org/10.1109/IMWS.2012.6215797","url":null,"abstract":"There are strong demands for providing small power to movable handy terminals by a resonance-type wireless power transfer system. Continuous charging for cellular phones in a room is the best example. Conventional WPT system has a limited capability to transfer power for the movable terminals with arbitrary positions and angles. We do not enjoy the merits of the wireless system. In this paper, a novel WPT system, which uses larger transmitting resonators embedded in a floor and in walls and a smaller receiving resonator installed in a handy terminal, is proposed. The larger transmitting resonator can transfer power for full space in the room, and the smaller receiving resonator is suitable for compact terminals. We evaluate the transmission efficiency in terms of coupling coefficient for any positions and any angles of the movable terminal in a room. To realize 3-D free-access, multiple transmission resonators are employed. The coupling coefficients are measured experimentally. Then, the possibility is confirmed.","PeriodicalId":6308,"journal":{"name":"2012 IEEE MTT-S International Microwave Workshop Series on Innovative Wireless Power Transmission: Technologies, Systems, and Applications","volume":"110 1","pages":"219-222"},"PeriodicalIF":0.0,"publicationDate":"2012-05-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"87695993","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 13
Microwave-assisted germination of cucumbers under low-temperature hydroponics environment 低温水培环境下微波辅助黄瓜发芽研究
2012 IEEE MTT-S International Microwave Workshop Series on Innovative Wireless Power Transmission: Technologies, Systems, and Applications Pub Date : 2012-05-10 DOI: 10.1109/IMWS.2012.6215817
N. Tani, S. Fukushima, S. Uchikado, A. Sato, A. Nakata, T. Ikei, R. Nanki, Y. Nakatani, Y. Kobayashi, Y. Horii
{"title":"Microwave-assisted germination of cucumbers under low-temperature hydroponics environment","authors":"N. Tani, S. Fukushima, S. Uchikado, A. Sato, A. Nakata, T. Ikei, R. Nanki, Y. Nakatani, Y. Kobayashi, Y. Horii","doi":"10.1109/IMWS.2012.6215817","DOIUrl":"https://doi.org/10.1109/IMWS.2012.6215817","url":null,"abstract":"Recently, microwave technology has drawn considerable interests not only in wireless communication systems, but also in wireless power transmissions[1], chemical reactions, and heating systems[2-3]. We are currently exploring the effects of microwave illumination upon plant growth. Different from conventional oil-based greenhouse heating systems, in which the heated air tends to stay in the ceiling area of the greenhouse, far from the plants to be heated, microwaves can directly heat the target plants by controlling radiation patterns of antenna arrays, leading to reduce the amount of energy consumption. This paper demonstrates that germination of cucumber seeds, placed under low-temperature environment, is promoted by a 2.45GHz, 50W microwave illumination.","PeriodicalId":6308,"journal":{"name":"2012 IEEE MTT-S International Microwave Workshop Series on Innovative Wireless Power Transmission: Technologies, Systems, and Applications","volume":"20 1","pages":"47-50"},"PeriodicalIF":0.0,"publicationDate":"2012-05-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"82628186","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 3
Phase and intensity control of multiple coil currents in resonant magnetic coupling 谐振磁耦合中多线圈电流的相位和强度控制
2012 IEEE MTT-S International Microwave Workshop Series on Innovative Wireless Power Transmission: Technologies, Systems, and Applications Pub Date : 2012-05-10 DOI: 10.1109/IMWS.2012.6215818
A. Uchida, S. Shimokawa, H. Kawano, K. Matsui, K. Ozaki, M. Taguchi
{"title":"Phase and intensity control of multiple coil currents in resonant magnetic coupling","authors":"A. Uchida, S. Shimokawa, H. Kawano, K. Matsui, K. Ozaki, M. Taguchi","doi":"10.1109/IMWS.2012.6215818","DOIUrl":"https://doi.org/10.1109/IMWS.2012.6215818","url":null,"abstract":"We studied the effects of the phase and intensity of multiple coil currents in a wireless power transfer system using resonant magnetic coupling. Resonant magnetic coupling is regarded as one of the most promising methods for mid-range wireless charging systems. For mid-range charging, the charging device can assume various positions and postures, and some of the conditions make wireless charging difficult. To solve this problem, we propose a method to control the phase and intensity of multiple coil currents. By performing numerical simulations using an equivalent circuit model and electromagnetic analysis, we confirmed that it had the desired effect.","PeriodicalId":6308,"journal":{"name":"2012 IEEE MTT-S International Microwave Workshop Series on Innovative Wireless Power Transmission: Technologies, Systems, and Applications","volume":"72 1","pages":"53-56"},"PeriodicalIF":0.0,"publicationDate":"2012-05-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"89111458","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 5
A power collecting circuit for WPT system using sheet-like waveguide 一种片状波导WPT系统的功率采集电路
2012 IEEE MTT-S International Microwave Workshop Series on Innovative Wireless Power Transmission: Technologies, Systems, and Applications Pub Date : 2012-05-10 DOI: 10.1109/IMWS.2012.6215787
N. Yoneyama, H. Arai
{"title":"A power collecting circuit for WPT system using sheet-like waveguide","authors":"N. Yoneyama, H. Arai","doi":"10.1109/IMWS.2012.6215787","DOIUrl":"https://doi.org/10.1109/IMWS.2012.6215787","url":null,"abstract":"In Wireless Power Transmission system using a sheet-like waveguide, an unused power is terminated by a dummy load at the end of waveguide. To reuse this unused power, this paper proposes a power collecting circuit using a phase shifter to feedback the unused power with in-phase for a source. In a prototype experiment, up to 95% of the unused power is collected by our method and we could save 61% of the input power of this WPT system. We also present a transit analysis of the power collecting experiment by simulation. As a result, the phase adjustment enhances the combined power by 4.1 dB in this power collecting system. Therefore, these results demonstrated that the power collecting experiment was effectively.","PeriodicalId":6308,"journal":{"name":"2012 IEEE MTT-S International Microwave Workshop Series on Innovative Wireless Power Transmission: Technologies, Systems, and Applications","volume":"5 1","pages":"119-122"},"PeriodicalIF":0.0,"publicationDate":"2012-05-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"84670233","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 4
The S-band GaN-based high power amplifier and rectenna for space energy transfer applications 用于空间能量传输应用的s波段氮化镓高功率放大器和整流天线
2012 IEEE MTT-S International Microwave Workshop Series on Innovative Wireless Power Transmission: Technologies, Systems, and Applications Pub Date : 2012-05-10 DOI: 10.1109/IMWS.2012.6215809
Y. Kobayashi, M. Hori, H. Noji, G. Fukuda, S. Kawasaki
{"title":"The S-band GaN-based high power amplifier and rectenna for space energy transfer applications","authors":"Y. Kobayashi, M. Hori, H. Noji, G. Fukuda, S. Kawasaki","doi":"10.1109/IMWS.2012.6215809","DOIUrl":"https://doi.org/10.1109/IMWS.2012.6215809","url":null,"abstract":"Gallium nitride (GaN) is one of the most significant elements to achieve effective use of energy in space not only for communications but also for power transmissions. This is because that GaN has the features such as high efficiency, high breakdown voltage, and harsh environment robustness and it is expected to fit the requirements for space use. Using GaN, the flexibilities for future missions in terms of size, weight, and power consumption etc. will be improved significantly. In this research, as a high power and high efficiency device, use of a GaN device was tried in a high power FET amplifier and in a single shunt rectifier diode. Circuits operating at S-band were designed, produced, and evaluated experimentally with the DC-RF conversion of 63.3% in the power amplifier and with the RF-DC one of 35.5% in the rectifier diode. A wireless power transmission (WPT) experiment using HPA and rectenna was conducted. As a result, it was confirmed that a battery could be charged up to 133.7 Ws in about 1500 s (25 min) by the DC power generated by the rectifier, where the EIRP was 57.2 dBm, the rectifier input power was 32.5 dBm, and the distance between a power transmitter and the receiver was 1.2 m.","PeriodicalId":6308,"journal":{"name":"2012 IEEE MTT-S International Microwave Workshop Series on Innovative Wireless Power Transmission: Technologies, Systems, and Applications","volume":"28 1 1","pages":"271-274"},"PeriodicalIF":0.0,"publicationDate":"2012-05-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"77842785","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 18
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