Electrical& Computer Electrical& Computer22In the FutureAfter Graduationinnovativelowlossmagneticmaterialsanddevicesforhighfrequencypowerconversionarenowbeinginprogress.In the FutureAfter GraduationProfessorReceived Dr. Eng. degree from WasedaUniv. in 2000. Research Associate since 2000 and Associate Prof. since 2006 with ShinshuUniv. Research interests include digital mobile communications systems.Professor1989;CompletedDoctoralprogramatgraduateschoolofScienceandTechnology,ChibaUniversity1989-1996；TOSHIBACorp.1996；AssociateProfessor,2005；ProfessorResearchField;Magneticmaterials/devices/sensorsandtheirapplicationsEngineeringEngineeringManypeopleareusingwirelesscommunicationservicessuchascellular-phone/smartphonedigitalbroadcasting,andwirelessLAN(Wi-Fi)onadailybasis.Theseservicesaresupportedbymanywirelesstechnologiessuchasspreadspectrum,OFDManddiversitycombining.Inthislab,wetheoreticallyinvestigatetheperformancesofthosetechnologiesinordertorealizeanewwirelesscommunicationsystemwithusabilityandefficiency.FumihitoSasamoriAsanapproachaimedtorealizeade-carbonsociety,effortsforefficientuseofelectricenergyarebeingpromoted.Thepowerelectronicssystemsarewidelyusedinthehugepowergrid.However,themagneticdevicesarecurrentlyaseriousbottleneckinrealizingcompact/lightweight/highly-efficientSiC/GaNbasedpowerelectronicssystems.Inourlaboratory(AssociateProfessorMakotoSoneharaandI),R&DsontheToshiro SatoWiththespreadofAIandIoTthroughoutispredictedthathugeamountsofelectricenergywillberequired.Asanapproachtomaintainasustainablesociety,novelpowerelectronicstechnologyforhighly-efficientutilizationofelectricenergywillbecomeincreasinglyimportantinthefuture.Themagneticmaterial/devicedevelopmentandtheirapplicationtovariouspowerelectronicssystemsarepromotedinourlaboratory,andthelaboratorystudentscanacquirediverseskills.Graduatesareactiveinawidevarietyofincludingelectronicsmanufacturers,electroniccomponentmanufacturers,electricpowercompany,railwaycompany,andresearchinstitutes.Cellular-phones/smartphonescommunication,terrestrialdigitalbroadcastingandwirelessLANservicesrequirehigh-speed(broadband)wirelesschannelsandexclusiveterminals.However,atrackingsystemforchildren’ssecurity/safetyandanautomaticmeteringsystemforelectricity/gas/waterdon’trequirethem.Wetakeatheoreticalapproachtoexploreawirelesssystemthatusesalow-speedchannelsuchasafree-ofchargevoicechannel,asitconsumeslessenergy,thusischeaperandalsoiseasiertouse.Wirelesscommunicationengineersareinhighdemandinnumeroustele-communicationscarriers,railwaycompanies,electricpowercompanies,andelectricalmanufacturers.Wirelesstechnologiescanbeappliedinvariousfieldsofengineering,sosomegraduateschangetheircareersforcareerenhancement.communications,terrestrialcompaniessuchastheworld,itfields,We design and implement an OFDM digital signal processing on a microcontroller over voice grade analog channels.In order to simulate wireless systems, we build a PC cluster with which many PCs can be virtually viewed as a high spec computer.SiC/GaNpowerdeviceswithverylowon-resistanceandveryhighspeedswitchingenabletorealizecompact,lightweightandhighly-efficientpowersupplysystemsbyincreasingoperationfrequency.Forfurtherprogress,theinnovativelowlossmagneticmaterialsanddevicesmustbedeveloped.Developmentofembed-dedmagneticdevicesintoorganicinterposer(Photo-lithographyprocessat1st.floorofUFO-agano)Rapidquenchingapparatusformakingsoftmagneticribbon(1st.floorofSASTec)Theoretical Approach to Realize WirelessCommunication with Usability and EfficiencyToward Carbon-Free Society！also contribution to Aerospace Systems！
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