{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,1,18]],"date-time":"2026-01-18T04:30:27Z","timestamp":1768710627857,"version":"3.49.0"},"reference-count":39,"publisher":"Institute of Electronics, Information and Communications Engineers (IEICE)","issue":"3","content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["IEICE Trans. Electron."],"published-print":{"date-parts":[[2024,3,1]]},"DOI":"10.1587\/transele.2023ecp5023","type":"journal-article","created":{"date-parts":[[2023,10,12]],"date-time":"2023-10-12T22:56:30Z","timestamp":1697151390000},"page":"66-75","source":"Crossref","is-referenced-by-count":7,"title":["Design of a Capacitive Coupler for Underwater Wireless Power Transfer Focused on the Landing Direction of a Drone"],"prefix":"10.1587","volume":"E107.C","author":[{"given":"Yasumasa","family":"NAKA","sequence":"first","affiliation":[{"name":"Department of Electrical and Electronic Information Engineering, Toyohashi University of Technology"}]},{"given":"Masaya","family":"TAMURA","sequence":"additional","affiliation":[{"name":"Department of Electrical and Electronic Information Engineering, Toyohashi University of Technology"}]}],"member":"532","reference":[{"key":"1","doi-asserted-by":"publisher","unstructured":"[1] J. Dai and D.C. Ludois, \u201cA survey of wireless power transfer and a critical comparison of inductive and capacitive coupling for small gap applications,\u201d IEEE Trans. Power Electron., vol.30, no.11, pp.6017-6029, Nov. 2015. DOI: 10.1109\/TPEL.2015.2415253 10.1109\/tpel.2015.2415253","DOI":"10.1109\/TPEL.2015.2415253"},{"key":"2","doi-asserted-by":"publisher","unstructured":"[2] C. Park, J. Park, Y. Shin, J. Kim, S. Huh, D. Kim, S. Park, and S. Ahn, \u201cSeparated circular capacitive coupler for reducing cross-coupling capacitance in drone wireless power transfer system,\u201d IEEE Trans. Microw. Theory Techn., vol.68, no.9, pp.3978-3985, Sept. 2020. DOI: 10.1109\/TMTT.2020.2989118 10.1109\/tmtt.2020.2989118","DOI":"10.1109\/TMTT.2020.2989118"},{"key":"3","doi-asserted-by":"publisher","unstructured":"[3] B. Luo, T. Long, L. Guo, R. Dai, R. Mai, and Z. He, \u201cAnalysis and design of inductive and capacitive hybrid wireless power transfer system for railway application,\u201d IEEE Trans. Ind Appl., vol.56, no.3, pp.3034-3042, March 2020. DOI: 10.1109\/TIA.2020.2979110 10.1109\/tia.2020.2979110","DOI":"10.1109\/TIA.2020.2979110"},{"key":"4","doi-asserted-by":"publisher","unstructured":"[4] T. Imura and Y. Hori, \u201cMaximizing air gap and efficiency of magnetic resonant coupling for wireless power transfer using equivalent circuit and neumann formula,\u201d IEEE Trans. Ind. Electron., vol.58, no.10, pp.4746-4752, Feb. 2011. DOI: 10.1109\/TIE.2011.2112317 10.1109\/tie.2011.2112317","DOI":"10.1109\/TIE.2011.2112317"},{"key":"5","doi-asserted-by":"publisher","unstructured":"[5] J. Lee and S. Nam, \u201cFundamental aspects of near-field coupling small antennas for wireless power transfer,\u201d IEEE Trans. Antennas Propag., vol.58, no.11, pp.3442-3449, Nov. 2010. DOI: 10.1109\/TAP.2010.2071330 10.1109\/tap.2010.2071330","DOI":"10.1109\/TAP.2010.2071330"},{"key":"6","doi-asserted-by":"publisher","unstructured":"[6] Cost Action IC1301 Team, \u201cEurope and the future for WPT: European contributions to wireless power transfer technology,\u201d IEEE Microw. Mag., vol.18, no.4, pp.56-87, June 2017. DOI: 10.1109\/MMM.2017.2680078 10.1109\/mmm.2017.2680078","DOI":"10.1109\/MMM.2017.2680078"},{"key":"7","doi-asserted-by":"publisher","unstructured":"[7] C.R. Teeneti, T.T. Truscott, D.N. Beal, and Z. Pantic, \u201cReview of wireless charging systems for autonomous underwater vehicles,\u201d IEEE J. Ocean. Eng., vol.46, no.1, pp.68-87, Jan. 2021. DOI: 10.1109\/JOE.2019.2953015 10.1109\/joe.2019.2953015","DOI":"10.1109\/JOE.2019.2953015"},{"key":"8","doi-asserted-by":"publisher","unstructured":"[8] R. Hasaba, K. Okamoto, S. Kawata, K. Eguchi, and Y. Koyanagi, \u201cMagnetic resonance wireless power transfer over 10 m with multiple coils immersed in seawater,\u201d IEEE Trans. Microw. Theory Techn., vol.67, no.11, pp.4505-4513, Nov. 2019. DOI: 10.1109\/TMTT.2019.2928291 10.1109\/tmtt.2019.2928291","DOI":"10.1109\/TMTT.2019.2928291"},{"key":"9","doi-asserted-by":"publisher","unstructured":"[9] J. Kim, K. Kim, H. Kim, D. Kim, J. Park, and S. Ahn, \u201cAn efficient modeling for underwater wireless power transfer using <i>Z<\/i>-parameters,\u201d IEEE Trans. Electromagn. Compat., vol.61, no.6, pp.2006-2014, Dec. 2019. DOI: 10.1109\/TEMC.2019.2952320 10.1109\/temc.2019.2952320","DOI":"10.1109\/TEMC.2019.2952320"},{"key":"10","doi-asserted-by":"publisher","unstructured":"[10] T. Kan, R. Mai, P.P. Mercier, and C.C. Mi, \u201cDesign and analysis of a three-phase wireless charging system for lightweight autonomous underwater vehicles,\u201d IEEE Trans. Power Electron., vol.33, no.8, pp.6622-6632, Aug. 2018. DOI: 10.1109\/TPEL.2017.2757015 10.1109\/tpel.2017.2757015","DOI":"10.1109\/TPEL.2017.2757015"},{"key":"11","doi-asserted-by":"publisher","unstructured":"[11] Z. Yan, Y. Zhang, T. Kan, F. Lu, K. Zhang, B. Song, and C.C. Mi, \u201cFrequency optimization of a loosely coupled underwater wireless power transfer system considering eddy current loss,\u201d IEEE Trans. Ind. Electron., vol.66, no.5, pp.3468-3476, May 2019. DOI: 10.1109\/TIE.2018.2851947 10.1109\/tie.2018.2851947","DOI":"10.1109\/TIE.2018.2851947"},{"key":"12","unstructured":"[12] Y. Sawahara, D. Futagami, T. Ishizaki, and I. Awai, \u201cDevelopment of underwater WPT system independent of salinity,\u201d Proc. IEEE Asia-Pacific Microw. Conf., pp.1363-1365, Sendai, Japan, Nov. 2014."},{"key":"13","doi-asserted-by":"crossref","unstructured":"[13] A. Askari, R. Stark, J. Curran, D. Rule, and K. Lin, \u201cUnderwater wireless power transfer,\u201d Proc. of 2015 IEEE Wireless Power Transfer Conference (WPTC), pp.1-4, Boulder, CO, USA, May 2015. DOI: 10.1109\/WPT.2015.7139141 10.1109\/wpt.2015.7139141","DOI":"10.1109\/WPT.2015.7139141"},{"key":"14","doi-asserted-by":"crossref","unstructured":"[14] M. Ogihara, T. Ebihara, K. Mizutani, and N. Wakatsuki, \u201cWireless power and data transfer system for station-based autonomous underwater vehicles,\u201d OCEANS 2015-MTS\/IEEE Washington, pp.1-5, Washington, DC, USA, Oct. 2015. DOI: 10.23919\/OCEANS.2015.7404400 10.23919\/oceans.2015.7404400","DOI":"10.23919\/OCEANS.2015.7404400"},{"key":"15","doi-asserted-by":"publisher","unstructured":"[15] J. Zhou, D.-j. Li, and Y. Chen, \u201cEfficiency improvement of underwater midrange inductive contactless power transmission via a relay resonator,\u201d Marine Technology Society Journal, vol.48, no.3, pp.73-87, May 2014. DOI: https:\/\/doi.org\/10.4031\/MTSJ.48.3.3 10.4031\/MTSJ.48.3.3","DOI":"10.4031\/MTSJ.48.3.3"},{"key":"16","doi-asserted-by":"publisher","unstructured":"[16] L. Yang, X. Li, Y. Zhang, B. Feng, T. Yang, H. Wen, J. Tian, D. Zhu, J. Huang, A. Zhang, and X. Tong, \u201cA review of underwater inductive wireless power transfer system,\u201d IET Power Electronics, Feb. 2023. (Early view) DOI: https:\/\/doi.org\/10.1049\/pel2.12456 10.1049\/pel2.12456","DOI":"10.1049\/pel2.12456"},{"key":"17","doi-asserted-by":"crossref","unstructured":"[17] H.M. Santos, M.R. Pereira, L.M. Pessoa, C. Duarte, and H.M.Salgado, \u201cAssessment of design trade-offs for wireless power transfer on seawater,\u201d Proc. OCEANS Conf., pp.1-7, 2016. DOI: 10.1109\/OCEANS.2016.7761273 10.1109\/oceans.2016.7761273","DOI":"10.1109\/OCEANS.2016.7761273"},{"key":"18","doi-asserted-by":"publisher","unstructured":"[18] Z. Cheng, Y. Lei, K. Song, and C. Zhu, \u201cDesign and loss analysis of loosely coupled transformer for an underwater high-power inductive power transfer system,\u201d IEEE Trans. Magn., vol.51, no.7, Art no.8401110, pp.1-10, July 2015. DOI: 10.1109\/TMAG.2014.2346737 10.1109\/tmag.2014.2346737","DOI":"10.1109\/TMAG.2014.2346737"},{"key":"19","doi-asserted-by":"publisher","unstructured":"[19] J. Kim and S. Ahn, \u201cDual loop reactive shield application of wireless power transfer system for leakage magnetic field reduction and efficiency enhancement,\u201d IEEE Access, vol.9, pp.118307-118323, Aug. 2021. DOI: 10.1109\/ACCESS.2021.3106336 10.1109\/access.2021.3106336","DOI":"10.1109\/ACCESS.2021.3106336"},{"key":"20","doi-asserted-by":"crossref","unstructured":"[20] A. Kurs, A. Karalis, R. Moffatt, J.D. Joannopoulos, P. Fisher, and M. Solja\u010di\u0107, \u201cWireless power transfer via strongly coupled magnetic resonances,\u201d Science, vol.317, no.5834, pp.84-86, July 2007. 10.1126\/science.1143254","DOI":"10.1126\/science.1143254"},{"key":"21","doi-asserted-by":"publisher","unstructured":"[21] M. Zargham and P.G. Gulak, \u201cMaximum achievable efficiency in near-field coupled power-transfer systems,\u201d IEEE Trans. Biomed. Circuits and Syst., vol.6, no.3, pp.228-245, June 2012. DOI: 10.1109\/TBCAS.2011.2174794 10.1109\/tbcas.2011.2174794","DOI":"10.1109\/TBCAS.2011.2174794"},{"key":"22","doi-asserted-by":"publisher","unstructured":"[22] T. Ohira, \u201cPower transfer theory on linear passive two-port systems,\u201d IEICE Trans. Electron., vol.E101-C, no.10, pp.719-726, Oct. 2018. DOI: https:\/\/doi.org\/10.1587\/transele.E101.C.719 10.1587\/transele.E101.C.719","DOI":"10.1587\/transele.E101.C.719"},{"key":"23","doi-asserted-by":"publisher","unstructured":"[23] H. Zhang and F. Lu, \u201cInsulated coupler structure design for the long-distance freshwater capacitive power transfer,\u201d IEEE Trans. Ind. Informat., vol.16, no.8, pp.5191-5201, Aug. 2020. DOI: 10.1109\/TII.2019.2948649 10.1109\/tii.2019.2948649","DOI":"10.1109\/TII.2019.2948649"},{"key":"24","doi-asserted-by":"crossref","unstructured":"[24] M. Urano and A. Takahashi, \u201cStudy on underwater wireless power transfer via electric coupling,\u201d 2016 IEEE International Meeting for Future of Electron Devices, Kansai, pp.1-2, June 2016. DOI:10.1109\/IMFEDK.2017.7998030 10.1109\/imfedk.2016.7521674","DOI":"10.1109\/IMFEDK.2016.7521674"},{"key":"25","doi-asserted-by":"publisher","unstructured":"[25] Y. Naka, K. Yamamoto, T. Nakata, and M. Tamura, \u201cImprovement in efficiency of underwater wireless power transfer with electric coupling,\u201d IEICE Trans. Electron., vol.E100-C, no.10, pp.850-857, Oct. 2017. DOI: 10.1587\/transele.E100.C.850 10.1587\/transele.e100.c.850","DOI":"10.1587\/transele.E100.C.850"},{"key":"26","doi-asserted-by":"publisher","unstructured":"[26] M. Tamura, Y. Naka, K. Murai, and T. Nakata, \u201cDesign of a capacitive wireless power transfer system for operation in fresh water,\u201d IEEE Trans. Microw. Theory Techn., vol.66, no.12, pp.5873-5884, Dec. 2018. DOI: 10.1109\/TMTT.2018.2875960 10.1109\/tmtt.2018.2875960","DOI":"10.1109\/TMTT.2018.2875960"},{"key":"27","doi-asserted-by":"publisher","unstructured":"[27] M. Tamura, Y. Naka, and K. Murai, \u201cDesign of capacitive coupler in underwater wireless power transfer focusing on <i>kQ<\/i> product,\u201d IEICE Trans. Electron., vol.E101-C, no.10, pp.759-766, Oct. 2018. DOI https:\/\/doi.org\/10.1587\/transele.E101.C.759 10.1587\/transele.E101.C.759","DOI":"10.1587\/transele.E101.C.759"},{"key":"28","doi-asserted-by":"publisher","unstructured":"[28] H. Matsukami, K. Murai, and M. Tamura, \u201cDesign of a misalignment-resistant capacitive coupler for wireless power transfer under fresh water,\u201d IEICE Commun. Express, vol.10, no.2, pp.73-80, Feb. 2021. DOI: https:\/\/doi.org\/10.1587\/comex.2020XBL0159 10.1587\/comex.2020XBL0159","DOI":"10.1587\/comex.2020XBL0159"},{"key":"29","doi-asserted-by":"publisher","unstructured":"[29] L. Yang, M. Ju, and B. Zhang, \u201cBidirectional undersea capacitive wireless power transfer system,\u201d IEEE Access, vol.7, pp.121046-121054, 2019. DOI: 10.1109\/ACCESS.2019.2937888 10.1109\/access.2019.2937888","DOI":"10.1109\/ACCESS.2019.2937888"},{"key":"30","doi-asserted-by":"crossref","unstructured":"[30] H. Mahdi, B. Hoff, and T. \u00d8strem, \u201cMaximum available power of undersea capacitive coupling in a wireless power transfer system,\u201d Proc. of 2021 IEEE Wireless Power Transfer Conference (WPTC), pp.1-4, San Diego, CA, USA, June 2021. DOI: 10.1109\/WPTC51349.2021.9458006 10.1109\/wptc51349.2021.9458006","DOI":"10.1109\/WPTC51349.2021.9458006"},{"key":"31","doi-asserted-by":"publisher","unstructured":"[31] M. Tamura, K. Murai, and M. Matsumoto, \u201cDesign of conductive coupler for underwater wireless power and data transfer,\u201d IEEE Trans. Microw. Theory Techn., vol.69, no.1, pp.1161-1175, Jan. 2021. DOI: 10.1109\/TMTT.2020.3041245 10.1109\/tmtt.2020.3041245","DOI":"10.1109\/TMTT.2020.3041245"},{"key":"32","doi-asserted-by":"publisher","unstructured":"[32] Y. Naka and M. Tamura, \u201cRepresentation of an equivalent circuit for capacitive wireless power transfer using a distributed-constant circuit,\u201d IEICE Commun. Express, vol.9, no.10, pp.457-463, Oct. 2020. DOI: https:\/\/doi.org\/10.1587\/comex.2020XBL0093 10.1587\/comex.2020XBL0093","DOI":"10.1587\/comex.2020XBL0093"},{"key":"33","doi-asserted-by":"publisher","unstructured":"[33] R.J. Wenzel, \u201cExact theory of interdigital related coupled band-pass structures,\u201d IEEE Trans. Microw. Theory Techn., vol.MTT-13, no.5, Sept. 1965. 10.1109\/tmtt.1965.1126051","DOI":"10.1109\/TMTT.1965.1126051"},{"key":"34","doi-asserted-by":"publisher","unstructured":"[34] K. Wincza, S. Gruszczynski, and S. Kuta, \u201cApproach to the design of asymmetric coupled-line directional couplers with the maximum achievable impedance-transformation ratio,\u201d IEEE Trans. Microw. Theory Techn., vol.60, no.5, pp.1218-1225, May 2012. DOI: 10.1109\/TMTT.2012.2187065 10.1109\/tmtt.2012.2187065","DOI":"10.1109\/TMTT.2012.2187065"},{"key":"35","doi-asserted-by":"publisher","unstructured":"[35] S. Gruszczynski and K. Wincza, \u201cGeneralized methods for the design of quasi-ideal symmetric and asymmetric coupled-line sections and directional couplers,\u201d IEEE Trans. Microw. Theory Techn., vol.59, no.7, pp.1709-1718, July 2011. DOI: 10.1109\/TMTT.2011.2138155 10.1109\/tmtt.2011.2138155","DOI":"10.1109\/TMTT.2011.2138155"},{"key":"36","doi-asserted-by":"crossref","unstructured":"[36] I. Awai, K. Hori, S. Yakuno, and K. Namikoshi, \u201cWireless power transmission based on directional coupler and directional filter,\u201d Proc. 2010 IEEE Trans. Microw. Theory Techn.-S International Microwave Symposium, pp.1568-1571, May 2010. DOI: 10.1109\/MWSYM.2010.5518186 10.1109\/mwsym.2010.5518186","DOI":"10.1109\/MWSYM.2010.5518186"},{"key":"37","unstructured":"[37] D.M. Pozar, Microwave Engineering, 4th ed., John Wiley &amp; Sons, New York,2011."},{"key":"38","doi-asserted-by":"publisher","unstructured":"[38] R.B. Marks and D.F. Williams, \u201cCharacteristic impedance determination using propagation constant measurement,\u201d IEEE Microw. Guided Wave Lett., vol.1, no.6, pp.141-143, June 1991. DOI: 10.1109\/75.91092 10.1109\/75.91092","DOI":"10.1109\/75.91092"},{"key":"39","doi-asserted-by":"publisher","unstructured":"[39] Q. Chen, K. Ozawa, Q. Yuan, and K. Sawaya, \u201cAntenna characterization for wireless power-transmission system using near-field coupling,\u201d IEEE Antennas Propag. Mag., vol.54, no.4, pp.108-116, Aug. 2012. DOI: 10.1109\/MAP.2012.6309161 10.1109\/map.2012.6309161","DOI":"10.1109\/MAP.2012.6309161"}],"container-title":["IEICE Transactions on Electronics"],"original-title":[],"language":"en","link":[{"URL":"https:\/\/www.jstage.jst.go.jp\/article\/transele\/E107.C\/3\/E107.C_2023ECP5023\/_pdf","content-type":"unspecified","content-version":"vor","intended-application":"similarity-checking"}],"deposited":{"date-parts":[[2024,3,2]],"date-time":"2024-03-02T03:47:24Z","timestamp":1709351244000},"score":1,"resource":{"primary":{"URL":"https:\/\/www.jstage.jst.go.jp\/article\/transele\/E107.C\/3\/E107.C_2023ECP5023\/_article"}},"subtitle":[],"short-title":[],"issued":{"date-parts":[[2024,3,1]]},"references-count":39,"journal-issue":{"issue":"3","published-print":{"date-parts":[[2024]]}},"URL":"https:\/\/doi.org\/10.1587\/transele.2023ecp5023","relation":{},"ISSN":["0916-8524","1745-1353"],"issn-type":[{"value":"0916-8524","type":"print"},{"value":"1745-1353","type":"electronic"}],"subject":[],"published":{"date-parts":[[2024,3,1]]},"article-number":"2023ECP5023"}}