Receiver-Feedback-Free Cavity Resonant Wireless Power Transfer Based on In Situ S-Parameter Estimation Using a Parasitic Antenna
This letter proposes a novel cavity resonant wireless power transfer that can optimize the load condition of a parasitic antenna without receiver feedback or the need to know the S-parameter a priori . In this letter, it is hypothesized that the transmission efficiency to a receiver can be indirectl...
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Veröffentlicht in: | IEEE antennas and wireless propagation letters 2021-10, Vol.20 (10), p.1923-1927 |
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container_end_page | 1927 |
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container_issue | 10 |
container_start_page | 1923 |
container_title | IEEE antennas and wireless propagation letters |
container_volume | 20 |
creator | Murata, Kentaro Kondo, Shinnosuke Takiya, Keito Honma, Naoki Chida, Tsukasa |
description | This letter proposes a novel cavity resonant wireless power transfer that can optimize the load condition of a parasitic antenna without receiver feedback or the need to know the S-parameter a priori . In this letter, it is hypothesized that the transmission efficiency to a receiver can be indirectly maximized by minimizing reflection observed at the signal source, and the proposed method is based on this. Furthermore, an in situ S-parameter estimation based on load modulation is proposed. This estimation provides a closed-form optimum load condition for minimizing reflection, and avoids the need for a brute force search with load sweeping. Experiments carried out in a 200 mm conductive cube cavity successfully demonstrate the effectiveness of the proposed method, which obtains a high transmission efficiency of 42.2% that is comparable to the achievable maximum. |
doi_str_mv | 10.1109/LAWP.2021.3100535 |
format | Article |
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In this letter, it is hypothesized that the transmission efficiency to a receiver can be indirectly maximized by minimizing reflection observed at the signal source, and the proposed method is based on this. Furthermore, an in situ S-parameter estimation based on load modulation is proposed. This estimation provides a closed-form optimum load condition for minimizing reflection, and avoids the need for a brute force search with load sweeping. 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(IEEE) 2021</rights><oa>free_for_read</oa><woscitedreferencessubscribed>false</woscitedreferencessubscribed><citedby>FETCH-LOGICAL-c336t-ae1db139493f979eab1fe6e1855655c1c2fc0bbc7f671cc0e20cb25c5ae4a7943</citedby><cites>FETCH-LOGICAL-c336t-ae1db139493f979eab1fe6e1855655c1c2fc0bbc7f671cc0e20cb25c5ae4a7943</cites><orcidid>0000-0003-4362-3163 ; 0000-0003-4738-3187</orcidid></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><linktohtml>$$Uhttps://ieeexplore.ieee.org/document/9497682$$EHTML$$P50$$Gieee$$H</linktohtml><link.rule.ids>314,780,784,796,27924,27925,54758</link.rule.ids><linktorsrc>$$Uhttps://ieeexplore.ieee.org/document/9497682$$EView_record_in_IEEE$$FView_record_in_$$GIEEE</linktorsrc></links><search><creatorcontrib>Murata, Kentaro</creatorcontrib><creatorcontrib>Kondo, Shinnosuke</creatorcontrib><creatorcontrib>Takiya, Keito</creatorcontrib><creatorcontrib>Honma, Naoki</creatorcontrib><creatorcontrib>Chida, Tsukasa</creatorcontrib><title>Receiver-Feedback-Free Cavity Resonant Wireless Power Transfer Based on In Situ S-Parameter Estimation Using a Parasitic Antenna</title><title>IEEE antennas and wireless propagation letters</title><addtitle>LAWP</addtitle><description>This letter proposes a novel cavity resonant wireless power transfer that can optimize the load condition of a parasitic antenna without receiver feedback or the need to know the S-parameter a priori . 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Experiments carried out in a 200 mm conductive cube cavity successfully demonstrate the effectiveness of the proposed method, which obtains a high transmission efficiency of 42.2% that is comparable to the achievable maximum.</description><subject>Cavity resonance</subject><subject>Feedback</subject><subject>Force</subject><subject>Frequency measurement</subject><subject>load modulation</subject><subject>Loaded antennas</subject><subject>Modulation</subject><subject>Optimization</subject><subject>Parameter estimation</subject><subject>parasitic antenna</subject><subject>Parasitic elements (antennas)</subject><subject>Phase measurement</subject><subject>Receivers & amplifiers</subject><subject>Receiving antennas</subject><subject>S-parameter</subject><subject>Scattering parameters</subject><subject>Signal reflection</subject><subject>Transmission efficiency</subject><subject>wireless power transfer</subject><subject>Wireless power transmission</subject><issn>1536-1225</issn><issn>1548-5757</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2021</creationdate><recordtype>article</recordtype><sourceid>RIE</sourceid><recordid>eNo9kEtLAzEUhYMoqNUfIG4CrlPzmMx0lrW0WihY-qDLkEnvSGrN1CStdOdPN0OLq3vgnPv6EHpgtMsYLZ8n_dW0yylnXcEolUJeoBsmsx6RhSwuWy1ywjiX1-g2hA2lrMiluEG_MzBgD-DJCGBdafNJRh4AD_TBxiOeQWicdhGvrIcthICnzQ94vPDahTqJFx1gjRuHxw7PbdzjOZlqr78gJnMYov3S0SZ7Gaz7wBq3ZrDRGtx3EZzTd-iq1tsA9-faQcvRcDF4I5P31_GgPyFGiDwSDWxdMVFmpajLogRdsRpyYD0pcykNM7w2tKpMUecFM4YCp6bi0kgNmS7KTHTQ02nuzjffewhRbZq9d2ml4jIFMsoTtg5ip5TxTQgearXz6QV_VIyqFrRqQasWtDqDTj2Ppx4LAP_5dGmR97j4A5HGeuA</recordid><startdate>20211001</startdate><enddate>20211001</enddate><creator>Murata, Kentaro</creator><creator>Kondo, Shinnosuke</creator><creator>Takiya, Keito</creator><creator>Honma, Naoki</creator><creator>Chida, Tsukasa</creator><general>IEEE</general><general>The Institute of Electrical and Electronics Engineers, Inc. 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In this letter, it is hypothesized that the transmission efficiency to a receiver can be indirectly maximized by minimizing reflection observed at the signal source, and the proposed method is based on this. Furthermore, an in situ S-parameter estimation based on load modulation is proposed. This estimation provides a closed-form optimum load condition for minimizing reflection, and avoids the need for a brute force search with load sweeping. Experiments carried out in a 200 mm conductive cube cavity successfully demonstrate the effectiveness of the proposed method, which obtains a high transmission efficiency of 42.2% that is comparable to the achievable maximum.</abstract><cop>New York</cop><pub>IEEE</pub><doi>10.1109/LAWP.2021.3100535</doi><tpages>5</tpages><orcidid>https://orcid.org/0000-0003-4362-3163</orcidid><orcidid>https://orcid.org/0000-0003-4738-3187</orcidid><oa>free_for_read</oa></addata></record> |
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subjects | Cavity resonance Feedback Force Frequency measurement load modulation Loaded antennas Modulation Optimization Parameter estimation parasitic antenna Parasitic elements (antennas) Phase measurement Receivers & amplifiers Receiving antennas S-parameter Scattering parameters Signal reflection Transmission efficiency wireless power transfer Wireless power transmission |
title | Receiver-Feedback-Free Cavity Resonant Wireless Power Transfer Based on In Situ S-Parameter Estimation Using a Parasitic Antenna |
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