Pub Date : 2013-05-15DOI: 10.1109/WPT.2013.6556891
Ryo Takamori, Midori Kawasaki, H. Seita, K. Nishimori, N. Honma, K. Nishikawa, Y. Maru, S. Kawasaki
This paper proposes a wireless sensor network system in a rocket and describes the architecture of sensor tags. The proposed health monitoring system based on the wireless sensor network employs MIMO communication systems, dual-band; 5GHz for downlink and 24GHz for uplink, and dual power sources; vibration and electromagnetic. The paper also demonstrates a GaAs pHEMT 20-30 GHz band low-power consumption amplifier MMIC for the sensor system. At 1V supply voltage, the amplifier achieves a gain of 11.4dB at 24.5GHz. The power consumption and the output 1-dB compression point are 6.16mW and -0.8dBm, respectively. The MMIC achieves the highest performances of reported 24-GHz amplifier ICs.
{"title":"Wireless sensor network in reusable vehicle rocket and low-power 20–30 Ghz amplifier MMIC","authors":"Ryo Takamori, Midori Kawasaki, H. Seita, K. Nishimori, N. Honma, K. Nishikawa, Y. Maru, S. Kawasaki","doi":"10.1109/WPT.2013.6556891","DOIUrl":"https://doi.org/10.1109/WPT.2013.6556891","url":null,"abstract":"This paper proposes a wireless sensor network system in a rocket and describes the architecture of sensor tags. The proposed health monitoring system based on the wireless sensor network employs MIMO communication systems, dual-band; 5GHz for downlink and 24GHz for uplink, and dual power sources; vibration and electromagnetic. The paper also demonstrates a GaAs pHEMT 20-30 GHz band low-power consumption amplifier MMIC for the sensor system. At 1V supply voltage, the amplifier achieves a gain of 11.4dB at 24.5GHz. The power consumption and the output 1-dB compression point are 6.16mW and -0.8dBm, respectively. The MMIC achieves the highest performances of reported 24-GHz amplifier ICs.","PeriodicalId":143468,"journal":{"name":"2013 IEEE Wireless Power Transfer (WPT)","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2013-05-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115419954","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}
Pub Date : 2013-05-15DOI: 10.1109/WPT.2013.6556920
T. Yamamoto, K. Koshiji
This paper describes a method for detecting the position of a capsule endoscope by using small, flat arrayed coils and discusses the improvement of this position detection and the energy transmission efficiency. The position of the capsule endoscope was detectable by measuring the terminal voltage variation in each small, flat coil connected in parallel. The coil that is utilized as an arrayed connection should have no crevice. Such coils can broaden the domain of high energy transmission efficiency.
{"title":"Position detection for transcutaneous energy transmission system for capsule endoscope","authors":"T. Yamamoto, K. Koshiji","doi":"10.1109/WPT.2013.6556920","DOIUrl":"https://doi.org/10.1109/WPT.2013.6556920","url":null,"abstract":"This paper describes a method for detecting the position of a capsule endoscope by using small, flat arrayed coils and discusses the improvement of this position detection and the energy transmission efficiency. The position of the capsule endoscope was detectable by measuring the terminal voltage variation in each small, flat coil connected in parallel. The coil that is utilized as an arrayed connection should have no crevice. Such coils can broaden the domain of high energy transmission efficiency.","PeriodicalId":143468,"journal":{"name":"2013 IEEE Wireless Power Transfer (WPT)","volume":"5 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2013-05-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124848204","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}
Pub Date : 2013-05-15DOI: 10.1109/WPT.2013.6556900
C. Song, Hongseok Kim, Sunkyu Kong, D. Jung, In-Myoung Kim, Young-il Kim, Jonghoon J. Kim, Joungho Kim
Inductive charging is a convenient method to transfer electrical power from a source to the batteries without any electrical contact. The problem is that inductive charging technologies may have electromagnetic compatibility (EMC) issues caused by leakage magnetic field. In this paper, an inductive charger design for electric vehicles (EVs) named as Handheld Resonant Magnetic Coupling Charger (HH-RMCC) is proposed. The air gap and thickness of the ferrite core are determined considering the core saturation and leakage magnetic field. The maximum value of the simulated magnetic flux density at the distance of 200 mm away from the charger is 2.28 mG and the simulation result of the power transfer efficiency is approximately 99.5%. The simulation results using 3D Finite Element Analysis (FEA) tool show that HH-RMCC satisfies EMF regulation published by the International Commission on NonIonizing Radiation and Protection (ICNIRP) at the frequency of 20 kHz with high performance.
{"title":"Structure of handheld resonant magnetic coupling charger (HH-RMCC) for electric vehicle considering electromagnetic field","authors":"C. Song, Hongseok Kim, Sunkyu Kong, D. Jung, In-Myoung Kim, Young-il Kim, Jonghoon J. Kim, Joungho Kim","doi":"10.1109/WPT.2013.6556900","DOIUrl":"https://doi.org/10.1109/WPT.2013.6556900","url":null,"abstract":"Inductive charging is a convenient method to transfer electrical power from a source to the batteries without any electrical contact. The problem is that inductive charging technologies may have electromagnetic compatibility (EMC) issues caused by leakage magnetic field. In this paper, an inductive charger design for electric vehicles (EVs) named as Handheld Resonant Magnetic Coupling Charger (HH-RMCC) is proposed. The air gap and thickness of the ferrite core are determined considering the core saturation and leakage magnetic field. The maximum value of the simulated magnetic flux density at the distance of 200 mm away from the charger is 2.28 mG and the simulation result of the power transfer efficiency is approximately 99.5%. The simulation results using 3D Finite Element Analysis (FEA) tool show that HH-RMCC satisfies EMF regulation published by the International Commission on NonIonizing Radiation and Protection (ICNIRP) at the frequency of 20 kHz with high performance.","PeriodicalId":143468,"journal":{"name":"2013 IEEE Wireless Power Transfer (WPT)","volume":"100 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2013-05-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122666675","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}
Pub Date : 2013-05-15DOI: 10.1109/WPT.2013.6556899
Defu Wang, R. Negra
This paper presents a dual-band rectifying circuit for wireless power transmission working at 2.45 GHz and 5.8 GHz. A modified dual-band matching network is adopted to realize the highly efficient dual-band rectifier. Source-pull simulations are performed, to determine the proper impedances at the two different frequencies. The proposed dual-band rectifier has been implemented and the measurements show good agreement with simulation. With a dual-band input matching network, the measurement results for an input power level of 10 mW show peak RF-to-DC efficiencies of 66.8% and 51.5% at 2.45 GHz and 5.8 GHz, respectively.
{"title":"Design of a dual-band rectifier for wireless power transmission","authors":"Defu Wang, R. Negra","doi":"10.1109/WPT.2013.6556899","DOIUrl":"https://doi.org/10.1109/WPT.2013.6556899","url":null,"abstract":"This paper presents a dual-band rectifying circuit for wireless power transmission working at 2.45 GHz and 5.8 GHz. A modified dual-band matching network is adopted to realize the highly efficient dual-band rectifier. Source-pull simulations are performed, to determine the proper impedances at the two different frequencies. The proposed dual-band rectifier has been implemented and the measurements show good agreement with simulation. With a dual-band input matching network, the measurement results for an input power level of 10 mW show peak RF-to-DC efficiencies of 66.8% and 51.5% at 2.45 GHz and 5.8 GHz, respectively.","PeriodicalId":143468,"journal":{"name":"2013 IEEE Wireless Power Transfer (WPT)","volume":"132 ","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2013-05-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"113996598","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}
Pub Date : 2013-05-15DOI: 10.1109/WPT.2013.6556919
C. L. Moorey, W. Holderbaum, B. Potter
By considering the full electromagnetic field expressions for the electric and magnetic dipole, a radiation transmission efficiency is defined for each dipole without restricting the solution to either the near or far field zones. It is shown that the transmission efficiencies of the electric and magnetic dipoles are the same across all possible distances, both near and far field. The role of frequency and spatial location on the transmission efficiency is also explored.
{"title":"Radiative power transmission from dipolar sources","authors":"C. L. Moorey, W. Holderbaum, B. Potter","doi":"10.1109/WPT.2013.6556919","DOIUrl":"https://doi.org/10.1109/WPT.2013.6556919","url":null,"abstract":"By considering the full electromagnetic field expressions for the electric and magnetic dipole, a radiation transmission efficiency is defined for each dipole without restricting the solution to either the near or far field zones. It is shown that the transmission efficiencies of the electric and magnetic dipoles are the same across all possible distances, both near and far field. The role of frequency and spatial location on the transmission efficiency is also explored.","PeriodicalId":143468,"journal":{"name":"2013 IEEE Wireless Power Transfer (WPT)","volume":"57 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2013-05-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115967748","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}
Pub Date : 2013-05-15DOI: 10.1109/WPT.2013.6556917
R. Matias, Bernardo Cunha, R. Martins
With the trend of portable electronics to go battery-less, Inductive Coupling Wireless Power Transfer (ICW Power Transfer) is becoming commonplace. Inductive Coupling has shown to be a good technique for proximity and wireless power transfer in general, because it permits the easy use of impedance matching and resonance circuits. An important potential application is powering Integrated Circuits (ICs) from a PCB (Printed Circuit Board) without using conductive pins. While using ferromagnetic core materials improves coupling, conductive non-ferromagnetic ones like most IC's substrates, decrease coupling and ICW Power Transfer performance. In this paper we developed a simple theoretical model for ICW power transfer and compared it with 3D Electromagnetic simulations of an inductive link system to ICs. The results show that enough power can be supplied to very low power consumption ICs. As this technique can be also used to perform wireless communications, it opens the possibility to design ICs without pins at all.
{"title":"Modeling inductive coupling for Wireless Power Transfer to integrated circuits","authors":"R. Matias, Bernardo Cunha, R. Martins","doi":"10.1109/WPT.2013.6556917","DOIUrl":"https://doi.org/10.1109/WPT.2013.6556917","url":null,"abstract":"With the trend of portable electronics to go battery-less, Inductive Coupling Wireless Power Transfer (ICW Power Transfer) is becoming commonplace. Inductive Coupling has shown to be a good technique for proximity and wireless power transfer in general, because it permits the easy use of impedance matching and resonance circuits. An important potential application is powering Integrated Circuits (ICs) from a PCB (Printed Circuit Board) without using conductive pins. While using ferromagnetic core materials improves coupling, conductive non-ferromagnetic ones like most IC's substrates, decrease coupling and ICW Power Transfer performance. In this paper we developed a simple theoretical model for ICW power transfer and compared it with 3D Electromagnetic simulations of an inductive link system to ICs. The results show that enough power can be supplied to very low power consumption ICs. As this technique can be also used to perform wireless communications, it opens the possibility to design ICs without pins at all.","PeriodicalId":143468,"journal":{"name":"2013 IEEE Wireless Power Transfer (WPT)","volume":"2 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2013-05-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132080409","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}
This paper reports thermal analysis of a 35kW wireless power transfer (WPT) pickup module to keep the system's efficiency at different temperatures. Temperature effects are first considered by looking at change in efficiency of the system which is influenced by change in resistance and capacitance at different temperatures. Then, we introduce methods to improve the overall performance of a high powered WPT system by utilizing appropriate wires and capacitors, and cooling the device by means of an optimized heat sink.
{"title":"Thermal analysis for temperature robust wireless power transfer systems","authors":"Kiwon Hwang, Sanghoon Chung, Uooyeol Yoon, Manho Lee, Seungyoung Ahn","doi":"10.1109/WPT.2013.6556879","DOIUrl":"https://doi.org/10.1109/WPT.2013.6556879","url":null,"abstract":"This paper reports thermal analysis of a 35kW wireless power transfer (WPT) pickup module to keep the system's efficiency at different temperatures. Temperature effects are first considered by looking at change in efficiency of the system which is influenced by change in resistance and capacitance at different temperatures. Then, we introduce methods to improve the overall performance of a high powered WPT system by utilizing appropriate wires and capacitors, and cooling the device by means of an optimized heat sink.","PeriodicalId":143468,"journal":{"name":"2013 IEEE Wireless Power Transfer (WPT)","volume":"14 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2013-05-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133499164","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}
This paper develops the idea of wireless power transfer system for high power application. We proposed power supply system, power reciever system and it's intergration. We assembly six supply and reciever pairs to obtain high power output using proposed resonance compensation. we verified proposed system by simulation and experiment. We were able to transfer 490kW over 11cm air gap. We discuss the practical applicability of this system and suggest directions for further study.
{"title":"Wireless power transfer system for high power application and a method of segmentation","authors":"Seungyong Shin, Jaegue Shin, Boyune Song, Seokhwan Lee, Yangsu Kim, Guho Jung, Seongjeub Jeon","doi":"10.1109/WPT.2013.6556886","DOIUrl":"https://doi.org/10.1109/WPT.2013.6556886","url":null,"abstract":"This paper develops the idea of wireless power transfer system for high power application. We proposed power supply system, power reciever system and it's intergration. We assembly six supply and reciever pairs to obtain high power output using proposed resonance compensation. we verified proposed system by simulation and experiment. We were able to transfer 490kW over 11cm air gap. We discuss the practical applicability of this system and suggest directions for further study.","PeriodicalId":143468,"journal":{"name":"2013 IEEE Wireless Power Transfer (WPT)","volume":"113 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2013-05-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124519674","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}
Pub Date : 2013-05-15DOI: 10.1109/WPT.2013.6556882
S. Dong, Hongxi Yu, Yazhou Dong, Liming Gong, Ying Wang
To release pressure of solar power satellite engineering, a concentric disc system model is put forward here. Classical Sandwich structure is abandoned for different requirement for planar accuracy between solar array and microwave power transmission array. The solar array is mounted with solar cell on both sides to reduce the system power dynamic range. The microwave power transmission disc circumrotates to maintain a perfect plane. Such a system can operate at increasing power level during its construction.
{"title":"A new solar power satellite system faced to engineering: Concentric disc","authors":"S. Dong, Hongxi Yu, Yazhou Dong, Liming Gong, Ying Wang","doi":"10.1109/WPT.2013.6556882","DOIUrl":"https://doi.org/10.1109/WPT.2013.6556882","url":null,"abstract":"To release pressure of solar power satellite engineering, a concentric disc system model is put forward here. Classical Sandwich structure is abandoned for different requirement for planar accuracy between solar array and microwave power transmission array. The solar array is mounted with solar cell on both sides to reduce the system power dynamic range. The microwave power transmission disc circumrotates to maintain a perfect plane. Such a system can operate at increasing power level during its construction.","PeriodicalId":143468,"journal":{"name":"2013 IEEE Wireless Power Transfer (WPT)","volume":"7 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2013-05-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122181086","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}
Pub Date : 2013-05-15DOI: 10.1109/WPT.2013.6556924
J. Kim, Hyeon-Chang Son, D. Kim, Y.J. Park
In this paper, a method of impedance matching for wireless power transfer (WPT) to multiple receivers is presented considering cross coupling effects between non-adjacent coils. For maximizing power transfer efficiency, design of a source coil and optimal load impedance are achieved based on circuit analysis and mutual inductance calculation. For verification, a WPT system of a transmitter and three receivers is fabricated. The fabricated WPT system can obtain reflection coefficient of under -11 dB for the maximum three receivers at once by using a circular single loop coil without capacitance compensation or additional impedance matching circuit. The simulated results show that the WPT system using the proposed method has more than 85% efficiency regardless of the number of receivers while efficiency for the conventional method is severely changed according to the number of the receivers. Measured results of the proposed method are consistent with calculation results.
{"title":"Impedance matching considering cross coupling for wireless power transfer to multiple receivers","authors":"J. Kim, Hyeon-Chang Son, D. Kim, Y.J. Park","doi":"10.1109/WPT.2013.6556924","DOIUrl":"https://doi.org/10.1109/WPT.2013.6556924","url":null,"abstract":"In this paper, a method of impedance matching for wireless power transfer (WPT) to multiple receivers is presented considering cross coupling effects between non-adjacent coils. For maximizing power transfer efficiency, design of a source coil and optimal load impedance are achieved based on circuit analysis and mutual inductance calculation. For verification, a WPT system of a transmitter and three receivers is fabricated. The fabricated WPT system can obtain reflection coefficient of under -11 dB for the maximum three receivers at once by using a circular single loop coil without capacitance compensation or additional impedance matching circuit. The simulated results show that the WPT system using the proposed method has more than 85% efficiency regardless of the number of receivers while efficiency for the conventional method is severely changed according to the number of the receivers. Measured results of the proposed method are consistent with calculation results.","PeriodicalId":143468,"journal":{"name":"2013 IEEE Wireless Power Transfer (WPT)","volume":"88 ","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2013-05-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"120874116","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}
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