Com-Power AH-826 User manual

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INSTRUCTIONMANUAL
HornAntenna(AH‐826)

19121ElToroRoadLakeForest,CA92676●(949)459‐9600●fax(949)459‐9604●com‐power.com
REV102913
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





INSTRUCTIONMANUAL

HornAntenna

AH‐826
18GHzto26.5GHz
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INSTRUCTIONMANUAL
HornAntenna(AH‐826)

19121ElToroRoadLakeForest,CA92676●(949)459‐9600●fax(949)459‐9604●com‐power.com
REV102913
TableofContents
1.0Introduction..............................................................................................................3
2.0ProductDescription......................................................................................................4
Overview....................................................................................................................................4
StandardItemsincludedwiththeantenna:............................................................................4
3.0ProductSpecifications..............................................................................................5
3.1OtherHornAntennasavailablefromCom‐Power.....................................................5
3.2Otherinstrumentationaccessoriesavailable.............................................................5
4.0ImportantSafetyPrecautions..................................................................................6
5.0Warranty...................................................................................................................7
5.1Maintenance..................................................................................................................7
6.0Settingupandusingtheantenna...............................................................................8
7.0TheoryofOperation..................................................................................................9
7.1Overview.......................................................................................................................9
8.0TypicalAntennaData...............................................................................................10
Figure8.1–TypicalAntennaFactors....................................................................................................10
Table8.1–TypicalPowerRequirementinWattsat1meterantennaspacing...................................10
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INSTRUCTIONMANUAL
HornAntenna(AH‐826)

19121ElToroRoadLakeForest,CA92676●(949)459‐9600●fax(949)459‐9604●com‐power.com
REV102913
1.0Introduction
Thismanualincludestheantennaspecifications,safetyprecautions,maintenanceand
warrantyinformation.Italsoincludessomebasicguidanceonproperlyonhowtouseitfor
EMCtesting.

InformationcontainedinthismanualisthepropertyofCom‐PowerCorporation.Itisissued
withtheunderstandingthatnoneofthematerialmaybereproducedorcopiedwithout
permissionfromCom‐Power.

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INSTRUCTIONMANUAL
HornAntenna(AH‐826)

19121ElToroRoadLakeForest,CA92676●(949)459‐9600●fax(949)459‐9604●com‐power.com
REV102913
2.0ProductDescription

Overview

ThemodelAH‐826HornantennawasspecificallydesignedforEMImeasurementfrom18to
26.5GHz.TheantennaiscapableofreceivingandtransmittingsignalsforEMCtesting.The
Hornantennaisatransducerwhichconvertselectricfieldstrengththatcanbedisplayedona
spectrumanalyzerorEMIreceiverduringEMItesting.

Settingupusingtheantennaisdescribedinsection6.Informationontheoryofoperationis
giveninsection7.

StandardItemsincludedwiththeantenna:
oUser'sguide.
oCalibrationdataandCertificatetraceabletoNIST.
Optionalitem
oISO‐17025calibrationdataandcertificate.


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INSTRUCTIONMANUAL
HornAntenna(AH‐826)

19121ElToroRoadLakeForest,CA92676●(949)459‐9600●fax(949)459‐9604●com‐power.com
REV102913
3.0ProductSpecifications
Model:AH‐826
FrequencyRange: 18GHzto26.5GHz
TypicalVSWR:  <2:1
PowerHandling: 5WattsCW
OutputImpedance: 50Ω
Polarization:  Linear
Gain:23dBimin
AntennaFactors: 32to34dB/m
Connector:  SMA(f)
Dimensions(LxWxH):7.8x9.5x5.6inches
19.8x24.1x14.2cm
Weight: 2lb./0.9kg

3.1OtherHornAntennasavailablefromCom‐Power
•AH‐220‐200MHzto2GHz
•AH‐8065‐800MHzto5GHz
•AH‐118‐1to18GHz
•AH‐640‐26.5to40GHz
•AH‐840‐18to40GHz
3.2Otherinstrumentationaccessoriesavailable
•PAM‐2000Preamplifier–10MHzto2GHz,27dBGain
•PAM‐6000Preamplifier–1to6GHz,30dBGain
•PAM‐118APreamplifier–1‐18GHz,40dBGain
•PAM‐840Preamplifier–18to40GHz,25dBGain
•AT‐120AntennaTripod
•Microwavecableassemblies
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.

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INSTRUCTIONMANUAL
HornAntenna(AH‐826)

19121ElToroRoadLakeForest,CA92676●(949)459‐9600●fax(949)459‐9604●com‐power.com
REV102913
4.0 ImportantSafetyPrecautions

GeneratingElectroMagneticFields
TheModelAH‐826antennacanusedtogenerateelectro‐magneticfieldsforimmunity
testing.Immunitytestingshouldbeconductedinsideashieldedenclosureoranchoic
chambertoavoidinterferencetootherequipmentandexposureofpersonneltohigh
electromagneticfields.

Maintenance
Therearenouserserviceablepartsintheantenna.Usermodificationstotheantennawill
voidwarrantyandmayalsoinvalidatethecalibration.Sendtheantennatoanauthorized
Com‐Powerservicecenterifneedsrepair.Pleasevisitourwebsiteatwww.com‐power.com
torequestareturnmerchandiseauthorizationnumber(RMA)beforeyousendtheunitinfor
service.

Environmentalconditions

Thisantennaisdesignedforindoororoutdooruse.

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INSTRUCTIONMANUAL
HornAntenna(AH‐826)

19121ElToroRoadLakeForest,CA92676●(949)459‐9600●fax(949)459‐9604●com‐power.com
REV102913
5.0 Warranty
Com‐PowerwarrantstoitsCustomersthattheantennasitmanufactureswillbefreefrom
defectsinmaterialsandworkmanshipforaperiodof3years.Thiswarrantyshallnotapplyto:

•Transportdamagesduringshipmentfromyourplant.
•Damagesduetopoorpackaging.
•Productsoperatedoutsidetheirspecifications.
•ProductsImproperlymaintainedormodified.
•Consumableitemssuchasfuses,powercords,cables,etc.
•Normalwear
•Calibration
•ProductsshippedoutsidetheUnitedStateswithoutthepriorknowlegeofCom‐
Power.

Inaddition,Com‐Powershallnotbeobligedtoprovideserviceunderthiswarrantytorepair
damageresultingfromattemptstoinstall,repair,serviceormodifytheantennabypersonnel
otherthanCom‐Powerservicerepresentatives.

UndernocircumstancesdoesCom‐Powerrecognizeorassumeliabilityforanyloss,damage
orexpensearising,eitherdirectlyorindirectly,fromtheuseorhandlingofthisproduct,or
anyinabilitytousethisproductseperatelyorincombinationwithanyotherequipment.

Whenrequestingwarrantyservices,itisrecommendedthattheoriginalpackagingmaterial
beusedforshipping.Damageduetoimproperpackagingwillvoidwarranty.

Inthecaseofrepairorcomplaint,alabelshouldbeattachedtothehousingofthe
instrumentwhichdescribesbrieflythefaultsobserved.Pleaseincludethename,telephone
numberandemailaddressofthecontactperson.Pleasevisitourwebsitewww.com‐
power.comandobtainanRMAnumberbyselectingserviceandcompletingtheonlineform.

5.1Maintenance

Thisantennahasnouserserviceablepartsinside.Iftheunitdoesnotoperateorneeds
calibration,pleasecontactCom‐PowerCorporation.Anymodificationsorrepairsperformed
ontheantennabysomeoneotherthananauthorizedfactorytrainedtechnicianwillvoid
warranty.

Theexteriorsurfacemaybecleanedwithmilddetergentandthenbewipedwithadry,clean,
lint‐freecloth.

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INSTRUCTIONMANUAL
HornAntenna(AH‐826)

19121ElToroRoadLakeForest,CA92676●(949)459‐9600●fax(949)459‐9604●com‐power.com
REV102913
6.0Settingupandusingtheantenna

6.1 Connecting

ThemodelAH‐826hornantennahasatypeSMAfemaleconnectorofsignaloutputorinput.
Itcanhandleupto5WattsCWsignal.Theseconnectorsaredelicateandshouldbehandled
withcare.Donotovertightenoruseexcessiveforcewhenmakingconnections.

6.2 Antennasetupforreceivingsignals

ThemodelAH‐826mustbeconnectedtothereceiver/spectrumanalyzerwithhigh
frequency,lowlosscables.Thelossmustbemeasuredandusedincalculatingthefield
strength.

6.3 Antennasetupfortransmittingsignals

WhentheAH‐826antennaisusedfortransmittingsignals,theantennaisconnectedtoa
microwavesignalgeneratorandapoweramplifier.ThemodelAH‐826antennacantransmit
upto5Wattsofcontinuouspower.Thefieldgeneratedbytheantennacanbemeasuredby
usingafieldstrengthmeter/probeoranotherhornantenna.

6.4Testlocation

TheHornAntennamustbemountedandplacedinareaawayfromotherconductiveobjects
ormaterialswheninuse.Largeconductivebuilding,structuresandelectricalcables,can
reflectandreradiatetheemissionsofEUT,causingerrorsinthetestdata.Inaddition,care
shouldbetakentokeepmeasuringinstrumentsandtestpersonnelawayfromthetestarea
toavoidinterferencetothetest,aswellexposureoftestpersonneltohighelectro‐magnetic
fields.



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INSTRUCTIONMANUAL
HornAntenna(AH‐826)

19121ElToroRoadLakeForest,CA92676●(949)459‐9600●fax(949)459‐9604●com‐power.com
REV102913
7.0 TheoryofOperation

7.1Overview

Broadbandantennasallowmeasurementofsignalsoverawidefrequencyrange.ModelAH‐
826HornAntennasarebroadbandantennasthatoperateinthefrequencyrangeof18to
26.5GHz.

ModelAH‐826canbothreceiveandTransmitoverthefrequencyrangeofoperationandis
usedforsusceptibilityandemissionstestinginEMCLaboratories.

BeforetheHornantennasareusedformeasurementtheyhavetobecalibrated.During
calibrationofaknownfieldstrength(dBµV/m)isgeneratedaroundtheantennaateach
frequencyatpredeterminedintervalsbetween18GHz–26.5GHz.Thedifferencebetween
fieldstrength(dBµV/m)receivedbytheantennaandknownfieldstrengthgenerated
(dBµV/m)istheantennafactor(dB/m)forthatfrequency.DuringEMCtestingtheantenna
factorforthefrequencyofinterestisaddedbacktoreadingontheEMImeterorspectrum
analyzertocalculatethefieldstrengthmeasuredbytheantenna.

Fieldstrength(dBµV/m)=Outputmeasured(dBµV)+AntennaFactor(dB/m)

WhenusingtheAH‐826antennafortransmittingapplication,pleaserefertoTable8.1to
determinethepowerrequirementstogeneratethedesiredelectro‐magneticfield.

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INSTRUCTIONMANUAL
HornAntenna(AH‐826)

19121ElToroRoadLakeForest,CA92676●(949)459‐9600●fax(949)459‐9604●com‐power.com
REV102913
8.0TypicalAntennaData
Figure8.1–TypicalAntennaFactors
Frequency

Gain
(dBi)
10
V/m
20
V/m
100
V/m
1800023.020.020.071.66
1900023.290.020.061.56
2000023.730.010.061.41
2100023.950.010.051.34
2200024.160.010.051.28
2300024.340.010.051.23
2400024.910.010.041.08
2500024.370.010.051.22
2600024.510.010.051.18
2650024.570.010.051.16
Table8.1–TypicalPowerRequirementinWattsat1meterantennaspacing
20
25
30
35
40
18 19 20 21 22 23 24 25 26
Factors(dB/m)
Frequency(GHz)