CHALLENGES OF INTERNATIONAL PROGRAMS IN COMMERCIAL WIRELESS POWER ‘TRANSMISSION

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1、CHALLENGESOFINTERNATIONALPROGRAMSINCOMMERCIALWIRELESSPOWER‘TRANSMISSIONRichardM.DickinsonJetPropulsionLaboratoryCaliforniaInstituteofTechnologyPasadena,CaliforniaABSTRACTThepropositionisofferedthatonlybyforminginternationalallianceswilleconomicallyviablecommerc

2、ialwirelesspowertransmission(WPT)result.RadioemissionsfromcommercialWPTwill.likelyextendbeyondthebordersofasinglenation.ItischallengingtocreatealegitimatenewservicefromtheexistingRadioFrequencyRegulations.BecausemanynationsparticipateintheInternationalTelecommu

3、nicationsUnion(ITU)process,thechallengeistodevisemeanstoincentivisethemtoyieldfrequencyallocationsforpayloadsandservicesaswellaspowertransfer.International.demonstrationsofWPTcouldaidinovercomingthechallengingtechnical,environmentalandeconomicskepticism.Multina

4、tionalcapitalformationcouldpossiblyachievethecha].lengingmagnitudeofdevelopmentfundsrequiredforWPT.SomeproposedapplicationsofWPTrequireequipmenttobelocatedaroundtheEarthattheequator,thusinvolvingmanycountries.ThelikelymarketsizeforaviableeconomicWPTenterprisemu

5、stincludemanynationsoftheworld.INTRODUCTIONProposedWPTcommercialapplicationsrangeinscopeandaltitudefromGigawattSatellitePowerSystems(SPS)[1]inGeosynchronousEarthOrbit(GEO),tolowEarthorbit(LEO)toGEOspacetransportat).on[2]anddowntocirclingaircraft[3]athighaltitud

6、eintheEarth’satmosphere.ThispaperpresentstheresultsofonephaseofresearchcarriedoutattheJetPropulsionLaboratory,CaliforniaInstituteofTechnology,undercontractwiththeNationalAeronauticsandSpaceAdministration.1.WPTapplicat].onsholdthepromiseofprovidingalternativeway

7、sofprovidingelectricpower,spacetransportationandwideareacommunications.ThepowerbeamsupportedhighaltitudeaircraftisanalternativetoeachcountryowningaGEOspacecraft.Itisanalternativetofiberopticsorothersuracemedialinkagetoeverycommunicationsuserinsomecountries.Itco

8、uldextendthediameterofacellularcommunicationscelltohundredsofkm.Thewristmountedtelephonemaychallengethehandheldunits.However,therearemanychallengesthatmustbefacedbeforesucha