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PWSeriesLTEBand28Single-BandMonopoleAntennaDatasheetOrderingInformationFeaturesOutperformssimilarmultibandsolutionsDurable,flexiblemainshaftWidebandwidthWeatherresistantforIP-ratedapplications1O-ringcompatiblebaseCompatiblewithplastic2andmetalenclosuresHighgain(1.
3dBiat700MHz,1.
0dBiat750MHzand0.
7dBiat810MHz)Highefficiency(59%at700MHz,72%at750MHzand61%at810MHz)AvailablefromLinxTechnologiesandselectdistributorsandrepresentatives.
PartNumberDescriptionANT-B28-PW-QW-UFLLTEBand28PWSeriesantenna,with216mm(8.
5in)1.
32mmcoaxcableterminatedwithU.
FLjack(female)connectorANT-B28-PW-QWLTEBand28PWSeriesantenna,with216mm(8.
5in)unterminatedRG-174coaxcableApplicationsLTE-M(Cat-M1)andNB-IoTLTEbands17,28&44GSM-750UMTS,USMHCandUSMHDSensingandremotemonitoringHand-helddevicesInternetofThings(IoT)devicesLow-powerwide-area(LPWA)networksNotes1UseofanO-ringisrecommended,IP-ratingscannotbeguaranteed2WithappropriatecounterpoisePWSeriesantennasarerugged,low-costandeasytoinstall.
ThesinglefrequencybandofPWantennasmakesthejobofantennaselectionsimple,withbetterperformanceinthetargetfrequencybandthaninmultibandantennasandrejectionofsignalsfromunwantedfrequencies.
ThePWLTEBand28antennatargets700MHzto810MHzwithexcellentVSWR,gainandefficiencyforcellularIoT(LTE-M,NB-IoT)applicationsandtraditionalLTE,UMTSandGSMneeds.
Thisrugged1/4-wavemonopoleantennamaybeusedwithplasticormetalenclosuresandsupportsweather-resistantapplications.
UFL1.
32mmCableWithU.
FL/MHFJackCutEndRG-174Cable,StraightCut2ElectricalSpecificationsFigure1.
PWLTEBand28AntennaVSWRwithBand28Uplink/DownlinkHighlightsANT-B28-PW-QW-cccFrequencyRange700MHzto810MHzCenterFrequency750MHzVSWR≤2.
7:1PeakGain1.
7dBiPolarizationLinearRadiationOmnidirectionalMaxPower10WWavelength1/4-waveImpedance50ΩConnectionU.
FL/MHFjack(female)on1.
32mmcableorunterminatedRG-174cableCableLength216mm(8.
5in)Height98.
4mm(3.
87in)WeightANT-B28-PW-QW=21.
2g(0.
75oz)ANT-B28-PW-QW-UFL=19.
9g(0.
70oz)OperatingTemperature-40°Cto+90°CVSWRFigure1providesthevoltagestandingwaveratio(VSWR)acrosstheantennabandwidth.
VSWRdescribesthepowerreflectedfromtheantennabacktotheradio.
AlowerVSWRvalueindicatesbetterantennaperformanceatagivenfrequency.
Reflectedpowerisalsoshownontheright-sideverticalaxisasagaugeofthepercentageoftransmitterpowerreflectedbackfromtheantenna.
703.
0748.
0758.
0803.
001020304012345700710720730740750760770780790800810ReflectedPower(%)VSWRFrequency(MHz)Electricalspecificationsandplotsmeasuredwitha102mmx102mm(4inx4in)referencegroundplane.
3Figure2.
PWLTEBand28AntennaReturnLosswithBand28Uplink/DownlinkHighlightsFigure3.
PWLTEBand28AntennaPeakGainwithBand28Uplink/DownlinkHighlightsReturnLossReturnloss(Figure2),representsthelossinpowerattheantennaduetoreflectedsignals.
LikeVSWR,alowerreturnlossvalueindicatesbetterantennaperformanceatagivenfrequency.
PeakGainThepeakgainacrosstheantennabandwidthisshowninFigure3.
Peakgainrepresentsthemaximumantennainputpowerconcentrationacross3-dimensionalspace,andthereforepeakperformance,atagivenfrequency,butdoesnotconsideranydirectionalityinthegainpattern.
703.
0748.
0758.
0803.
0-20-18-16-14-12-10-8-6-4-20700710720730740750760770780790800810ReturnLoss(dB)Frequency(MHz)703.
0748.
0758.
0803.
0-20-15-10-505700710720730740750760770780790800810PeakGain(dBi)Frequency(MHz)4Figure4.
PWLTEBand28AntennaAverageGainwithBand28Uplink/DownlinkHighlightsFigure5.
PWLTEBand28AntennaRadiationEfficiencywithBand28Uplink/DownlinkHighlightsAverageGainAveragegain(Figure4),istheaverageofallantennagainin3-dimensionalspaceateachfrequency,providinganindicationofoverallperformancewithoutexpressingantennadirectionality.
RadiationEfficiencyRadiationefficiency(Figure5),showstheratioofpowerdeliveredtotheantennarelativetothepowerradiatedattheantenna,expressedasapercentage,whereahigherpercentageindicatesbetterperformanceatagivenfrequency.
703.
0748.
0758.
0803.
0-20-15-10-505700710720730740750760770780790800810AverageGain(dBi)Frequency(MHz)703.
0748.
0758.
0803.
00102030405060708090100700710720730740750760770780790800810Efficiency(%)Frequency(MHz)5Figure7.
PWLTEBand28AntennaShownOnEdgeofEvaluationBoardCounterpoiseQuarter-waveormonopoleantennasrequireanassociatedgroundplanecounterpoiseforproperoperation.
Thesizeandlocationofthegroundplaterelativetotheantennawillaffecttheoverallperformanceoftheantennainthefinaldesign.
Whenusedinconjunctionwithagroundplanesmallerthanthatusedtotunetheantenna,thecenterfrequencytypicallywillshifthigherinfrequencyandthebandwidthwilldecrease.
Theproximityofothercircuitelementsandpackagingneartheantennawillalsoaffectthefinalperformance.
Forfurtherdiscussionandguidanceontheimportanceofthegroundplanecounterpoise,pleaserefertoLinxApplicationNoteAN-00501:UnderstandingAntennaSpecificationsandOperation.
AntennaMountingTheantennaisattachedbyplacingitscableandbasethrougha6.
35mm(0.
25in)holeintheproductenclosureandsecuringitwiththeincludednutorbythreadingitintoaPEM-styleinsert(notincluded).
Thestraight-cutRG-174coaxcableoptionallowstheattachmentofa50-ohmRFconnectororallowsthecabletobesoldereddirectlytoaPCB,eliminatingtheneedforaconnector.
Theconnectorizedoptionprovidesa1.
32mmcoaxcableterminatedwithaU.
FL/MHFcompatibleconnectorforsimplifiedmanufacturingorforapplicationsrequiringtheabilitytodisconnecttheantenna.
ProductDimensionsFigure6.
PWLTEBand28AntennaDimensions52.
0mm(2.
05in)6.
0mm(0.
24in)14.
5mm(0.
57in)7/16in.
HexNut1/4-28UNFThread7.
8mm(0.
31in)98.
4mm(3.
87in)6-50-45-40-35-30-25-20-15-10-5050102030405060708090100110120130140150160170180190200210220230240250260270280290300310320330340350-50-45-40-35-30-25-20-15-10-5050102030405060708090100110120130140150160170180190200210220230240250260270280290300310320330340350750MHz703MHz803MHz-50-45-40-35-30-25-20-15-10-5050102030405060708090100110120130140150160170180190200210220230240250260270280290300310320330340350XZ-PlaneGainYZ-PlaneGainXY-PlaneGainXZ-PlaneGainYZ-PlaneGainXY-PlaneGain703MHzto803MHz(750MHz)Figure8.
RadiationPatternsforPWLTEBand28AntennaRadiationPatternsRadiationpatternsprovideinformationaboutthedirectionalityand3-dimensionalgainperformanceoftheantennabyplottinggainatspecificfrequenciesinthreeorthogonalplanes.
Antennaradiationpatterns(Figure9),areshownusingpolarplotscovering360degrees.
Theantennagraphicabovetheplotsprovidesreferencetotheplaneofthecolumnofplotsbelowit.
Note:whenviewedwithtypicalPDFviewingsoftware,zoomingintoradiationpatternsispossibletorevealfinedetail.
7AntennaDefinitionsandUsefulFormulasVSWR-VoltageStandingWaveRatio.
VSWRisaunitlessratiothatdescribesthepowerreflectedfromtheantennabacktotheradio.
AlowerVSWRvalueindicatesbetterantennaperformanceatagivenfrequency.
VSWRiseasilyderivedfromReturnLoss.
VSWR=10+1ReturnLoss2010-1ReturnLoss20ReturnLoss-Returnlossrepresentsthelossinpowerattheantennaduetoreflectedsignals,measuredindecibels.
Alowerreturnlossvalueindicatesbetterantennaperformanceatagivenfrequency.
ReturnLossiseasilyderivedfromVSWR.
ReturnLoss=-20log10VSWR-1VSWR+1Efficiency-Thetotalradiatedpowerdividedbytheinputpoweratthefeedpointofanantenna.
decibel(dB)-Alogarithmicunitofmeasureofthepowerofanelectricalsignal.
decibelisotropic(dBi)-Acomparativemeasureindecibelsbetweenanantennaundertestandanisotropicradiator.
decibelrelativetoadipole(dBd)-Acomparativemeasureindecibelsbetweenanantennaundertestandanidealhalf-wavedipole.
Gain-Theratioofanantenna'sefficiencyinagivendirection(G)tothepowerproducedbyatheoreticallossless(100%efficient)isotropicantenna.
Thegainofanantennaisalmostalwaysexpressedindecibels.
GdBi=10log10(G)GdBd=GdBi-2.
15dBPeakGain-Thehighestantennagainacrossalldirectionsforagivenfrequencyrange.
Adirectionalantennawillhaveaveryhighpeakgaincomparedtoaveragegain.
AverageGain-Theaveragegainacrossalldirectionsforagivenfrequencyrange.
MaximumPower-Themaximumsignalpowerwhichmaybeappliedtoanantennafeedpoint,typicallymeasuredinwatts(W).
Omnidirectional-Termdescribinganantennaradiationpatternthatisuniforminalldirections(spherical).
Anisotropicantennaisthetheoreticalperfectomnidirectionalantenna.
Anidealdipoleantennahasadonut-shapedradiationpatternandotherpracticalantennaimplementationswillhavelessperfectbutgenerallyomnidirectionalradiationpatternswhicharetypicallyplottedonthreeaxes.
Dipole-Anidealdipolecomprisesastraightelectricalconductormeasuring1/2wavelengthfromendtoendconnectedatthecentertoafeedpointfortheradio.
IsotropicRadiator-Atheoreticalantennawhichradiatesenergyequallyinalldirectionsasaperfectsphere.
MouserElectronicsAuthorizedDistributorClicktoViewPricing,Inventory,Delivery&LifecycleInformation:LinxTechnologies:ANT-B28-PW-QW-UFLANT-B28-PW-QW
3dBiat700MHz,1.
0dBiat750MHzand0.
7dBiat810MHz)Highefficiency(59%at700MHz,72%at750MHzand61%at810MHz)AvailablefromLinxTechnologiesandselectdistributorsandrepresentatives.
PartNumberDescriptionANT-B28-PW-QW-UFLLTEBand28PWSeriesantenna,with216mm(8.
5in)1.
32mmcoaxcableterminatedwithU.
FLjack(female)connectorANT-B28-PW-QWLTEBand28PWSeriesantenna,with216mm(8.
5in)unterminatedRG-174coaxcableApplicationsLTE-M(Cat-M1)andNB-IoTLTEbands17,28&44GSM-750UMTS,USMHCandUSMHDSensingandremotemonitoringHand-helddevicesInternetofThings(IoT)devicesLow-powerwide-area(LPWA)networksNotes1UseofanO-ringisrecommended,IP-ratingscannotbeguaranteed2WithappropriatecounterpoisePWSeriesantennasarerugged,low-costandeasytoinstall.
ThesinglefrequencybandofPWantennasmakesthejobofantennaselectionsimple,withbetterperformanceinthetargetfrequencybandthaninmultibandantennasandrejectionofsignalsfromunwantedfrequencies.
ThePWLTEBand28antennatargets700MHzto810MHzwithexcellentVSWR,gainandefficiencyforcellularIoT(LTE-M,NB-IoT)applicationsandtraditionalLTE,UMTSandGSMneeds.
Thisrugged1/4-wavemonopoleantennamaybeusedwithplasticormetalenclosuresandsupportsweather-resistantapplications.
UFL1.
32mmCableWithU.
FL/MHFJackCutEndRG-174Cable,StraightCut2ElectricalSpecificationsFigure1.
PWLTEBand28AntennaVSWRwithBand28Uplink/DownlinkHighlightsANT-B28-PW-QW-cccFrequencyRange700MHzto810MHzCenterFrequency750MHzVSWR≤2.
7:1PeakGain1.
7dBiPolarizationLinearRadiationOmnidirectionalMaxPower10WWavelength1/4-waveImpedance50ΩConnectionU.
FL/MHFjack(female)on1.
32mmcableorunterminatedRG-174cableCableLength216mm(8.
5in)Height98.
4mm(3.
87in)WeightANT-B28-PW-QW=21.
2g(0.
75oz)ANT-B28-PW-QW-UFL=19.
9g(0.
70oz)OperatingTemperature-40°Cto+90°CVSWRFigure1providesthevoltagestandingwaveratio(VSWR)acrosstheantennabandwidth.
VSWRdescribesthepowerreflectedfromtheantennabacktotheradio.
AlowerVSWRvalueindicatesbetterantennaperformanceatagivenfrequency.
Reflectedpowerisalsoshownontheright-sideverticalaxisasagaugeofthepercentageoftransmitterpowerreflectedbackfromtheantenna.
703.
0748.
0758.
0803.
001020304012345700710720730740750760770780790800810ReflectedPower(%)VSWRFrequency(MHz)Electricalspecificationsandplotsmeasuredwitha102mmx102mm(4inx4in)referencegroundplane.
3Figure2.
PWLTEBand28AntennaReturnLosswithBand28Uplink/DownlinkHighlightsFigure3.
PWLTEBand28AntennaPeakGainwithBand28Uplink/DownlinkHighlightsReturnLossReturnloss(Figure2),representsthelossinpowerattheantennaduetoreflectedsignals.
LikeVSWR,alowerreturnlossvalueindicatesbetterantennaperformanceatagivenfrequency.
PeakGainThepeakgainacrosstheantennabandwidthisshowninFigure3.
Peakgainrepresentsthemaximumantennainputpowerconcentrationacross3-dimensionalspace,andthereforepeakperformance,atagivenfrequency,butdoesnotconsideranydirectionalityinthegainpattern.
703.
0748.
0758.
0803.
0-20-18-16-14-12-10-8-6-4-20700710720730740750760770780790800810ReturnLoss(dB)Frequency(MHz)703.
0748.
0758.
0803.
0-20-15-10-505700710720730740750760770780790800810PeakGain(dBi)Frequency(MHz)4Figure4.
PWLTEBand28AntennaAverageGainwithBand28Uplink/DownlinkHighlightsFigure5.
PWLTEBand28AntennaRadiationEfficiencywithBand28Uplink/DownlinkHighlightsAverageGainAveragegain(Figure4),istheaverageofallantennagainin3-dimensionalspaceateachfrequency,providinganindicationofoverallperformancewithoutexpressingantennadirectionality.
RadiationEfficiencyRadiationefficiency(Figure5),showstheratioofpowerdeliveredtotheantennarelativetothepowerradiatedattheantenna,expressedasapercentage,whereahigherpercentageindicatesbetterperformanceatagivenfrequency.
703.
0748.
0758.
0803.
0-20-15-10-505700710720730740750760770780790800810AverageGain(dBi)Frequency(MHz)703.
0748.
0758.
0803.
00102030405060708090100700710720730740750760770780790800810Efficiency(%)Frequency(MHz)5Figure7.
PWLTEBand28AntennaShownOnEdgeofEvaluationBoardCounterpoiseQuarter-waveormonopoleantennasrequireanassociatedgroundplanecounterpoiseforproperoperation.
Thesizeandlocationofthegroundplaterelativetotheantennawillaffecttheoverallperformanceoftheantennainthefinaldesign.
Whenusedinconjunctionwithagroundplanesmallerthanthatusedtotunetheantenna,thecenterfrequencytypicallywillshifthigherinfrequencyandthebandwidthwilldecrease.
Theproximityofothercircuitelementsandpackagingneartheantennawillalsoaffectthefinalperformance.
Forfurtherdiscussionandguidanceontheimportanceofthegroundplanecounterpoise,pleaserefertoLinxApplicationNoteAN-00501:UnderstandingAntennaSpecificationsandOperation.
AntennaMountingTheantennaisattachedbyplacingitscableandbasethrougha6.
35mm(0.
25in)holeintheproductenclosureandsecuringitwiththeincludednutorbythreadingitintoaPEM-styleinsert(notincluded).
Thestraight-cutRG-174coaxcableoptionallowstheattachmentofa50-ohmRFconnectororallowsthecabletobesoldereddirectlytoaPCB,eliminatingtheneedforaconnector.
Theconnectorizedoptionprovidesa1.
32mmcoaxcableterminatedwithaU.
FL/MHFcompatibleconnectorforsimplifiedmanufacturingorforapplicationsrequiringtheabilitytodisconnecttheantenna.
ProductDimensionsFigure6.
PWLTEBand28AntennaDimensions52.
0mm(2.
05in)6.
0mm(0.
24in)14.
5mm(0.
57in)7/16in.
HexNut1/4-28UNFThread7.
8mm(0.
31in)98.
4mm(3.
87in)6-50-45-40-35-30-25-20-15-10-5050102030405060708090100110120130140150160170180190200210220230240250260270280290300310320330340350-50-45-40-35-30-25-20-15-10-5050102030405060708090100110120130140150160170180190200210220230240250260270280290300310320330340350750MHz703MHz803MHz-50-45-40-35-30-25-20-15-10-5050102030405060708090100110120130140150160170180190200210220230240250260270280290300310320330340350XZ-PlaneGainYZ-PlaneGainXY-PlaneGainXZ-PlaneGainYZ-PlaneGainXY-PlaneGain703MHzto803MHz(750MHz)Figure8.
RadiationPatternsforPWLTEBand28AntennaRadiationPatternsRadiationpatternsprovideinformationaboutthedirectionalityand3-dimensionalgainperformanceoftheantennabyplottinggainatspecificfrequenciesinthreeorthogonalplanes.
Antennaradiationpatterns(Figure9),areshownusingpolarplotscovering360degrees.
Theantennagraphicabovetheplotsprovidesreferencetotheplaneofthecolumnofplotsbelowit.
Note:whenviewedwithtypicalPDFviewingsoftware,zoomingintoradiationpatternsispossibletorevealfinedetail.
7AntennaDefinitionsandUsefulFormulasVSWR-VoltageStandingWaveRatio.
VSWRisaunitlessratiothatdescribesthepowerreflectedfromtheantennabacktotheradio.
AlowerVSWRvalueindicatesbetterantennaperformanceatagivenfrequency.
VSWRiseasilyderivedfromReturnLoss.
VSWR=10+1ReturnLoss2010-1ReturnLoss20ReturnLoss-Returnlossrepresentsthelossinpowerattheantennaduetoreflectedsignals,measuredindecibels.
Alowerreturnlossvalueindicatesbetterantennaperformanceatagivenfrequency.
ReturnLossiseasilyderivedfromVSWR.
ReturnLoss=-20log10VSWR-1VSWR+1Efficiency-Thetotalradiatedpowerdividedbytheinputpoweratthefeedpointofanantenna.
decibel(dB)-Alogarithmicunitofmeasureofthepowerofanelectricalsignal.
decibelisotropic(dBi)-Acomparativemeasureindecibelsbetweenanantennaundertestandanisotropicradiator.
decibelrelativetoadipole(dBd)-Acomparativemeasureindecibelsbetweenanantennaundertestandanidealhalf-wavedipole.
Gain-Theratioofanantenna'sefficiencyinagivendirection(G)tothepowerproducedbyatheoreticallossless(100%efficient)isotropicantenna.
Thegainofanantennaisalmostalwaysexpressedindecibels.
GdBi=10log10(G)GdBd=GdBi-2.
15dBPeakGain-Thehighestantennagainacrossalldirectionsforagivenfrequencyrange.
Adirectionalantennawillhaveaveryhighpeakgaincomparedtoaveragegain.
AverageGain-Theaveragegainacrossalldirectionsforagivenfrequencyrange.
MaximumPower-Themaximumsignalpowerwhichmaybeappliedtoanantennafeedpoint,typicallymeasuredinwatts(W).
Omnidirectional-Termdescribinganantennaradiationpatternthatisuniforminalldirections(spherical).
Anisotropicantennaisthetheoreticalperfectomnidirectionalantenna.
Anidealdipoleantennahasadonut-shapedradiationpatternandotherpracticalantennaimplementationswillhavelessperfectbutgenerallyomnidirectionalradiationpatternswhicharetypicallyplottedonthreeaxes.
Dipole-Anidealdipolecomprisesastraightelectricalconductormeasuring1/2wavelengthfromendtoendconnectedatthecentertoafeedpointfortheradio.
IsotropicRadiator-Atheoreticalantennawhichradiatesenergyequallyinalldirectionsasaperfectsphere.
MouserElectronicsAuthorizedDistributorClicktoViewPricing,Inventory,Delivery&LifecycleInformation:LinxTechnologies:ANT-B28-PW-QW-UFLANT-B28-PW-QW
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