FlexRadio Systems Tuner Genius XL User Manual

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Copyright 2021 FlexRadio. All Rights Reserved. 7 June 2021(FW:0.9.12, Utility: 0.9.12)
TunerGeniusiselectricallyimplementedasapi‐networktunerwiththr eevariableelements;aseriesinductor
withtwocapacitorstoground:oneattheinputandtheotherattheoutput.Apinetworkisidealformatching
therelativelylow50Ωimpedanceofatransmitterandrelativelyhighand
unknownimpedancesantenna
systempresentforacurrentoperatingfrequency.Furthermore,becausethematchingcircuitalsoformsalow‐
passfilter,itprovidesbeneficialharmonicsuppressionbeyondthatprovidedbytheexciterandamplifier.
ThetunerisasystemofdiscreteLCcomponentswhichareswitchedintoandoutof
thematchingcircuitbya
microcontroller.ThecombinationofdiscreteLorCcomponentsdetermineseachnetworkelement'svalue.
Eachelementcanbeoneof255possiblevalues.Thishighlygranularsteppedapproachprovides255
3
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(16,581,375)possiblematchingcombinations.
4.1 Tune
Wheninstructedbytheoperator,themicrocontrollerkeysthetransmitterandexecutesanalgorithmthat
quicklyvariesthevalueforeachelementofthematchingnetwork.Foreachvalue,theoutputofadirectional
couplerissampledandusedtosearchforatargetimpedancematch.
Onceamatchsolutionis
found,thefrequencyanddatanecessarytorecallthematchingnetwork'selement
valuesarestoredinanon‐volatilememorylocation.Whentheoperatornexttransmitsonafrequencywithin
10kHzofastoredsolution,thevaluesrequiredtoreconstitutethepinetworkelementvaluesarerecalledand
appliedto
thecircuit.
4.2 Transmit
ThemicrocontrollersamplesthedirectionalcouplertopresentaccurateforwardpowerandcalculatedSWR
duringtransmissions.
4.3 Receive
Duringreceive,thetunercanoptionallybypassthetunedmatchingcircuit.
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5 Features of the Tuner Genius XL
InputPower +12to+20VDC(XXXma)
AntennaSwitchingoptions: SO2R(70dBinputisolation)
1x3Matrix
Control: Windowsapplication
RFPower: 1500WICASwithheadroomfor2000W(allmodes)
Tuning: Fullyautomaticandmanual
Over16.5millionpossiblesolutionsusingC‐L‐C(Pi)matchingcircuit
Firsttimesolutiontime(2to12seconds)–solutionstoredinmemory
Nexttimesolutiontime<20ms–solutionrecalledfrommemory
20to200Winputpowerrequiredduringtuning(20Wrecommended)
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Matching: 50‐ohms(nominal)inputimpedance
Upto10:1SWR(.5to5k‐ohms)
FrequencyRanges: 1.8MHzto30MHz
50MHzto54MHz

FlexRadio Systems Tuner Genius XL Specifications

General

Brand	FlexRadio Systems
Model	Tuner Genius XL
Category	Tuner
Language	English