ATU-100_Extended_Board_User_用户使用操作说明书手册_eng.pdf

TechnicalDescriptionoftheAutotunerboard

ATU-100Extendedboard

byN7DDC.

Attention!Therearenorestrictionsandprohibitionsontheuseofthismaterialforanypurpose,

aswellasallrelatedmaterials,theauthorofwhichisN7DDC.

Attention!Theinformationpublishedinthisdocumentistrueonlywhenusinga

devicewithfirmwareversion3.0.Ifyouareunabletofindoutwhichsoftware

versionisbeingused,updatetofirmwareversion3.0usingtheprogrammerto

ensurethattheinformationfromthedescriptionmatchesthedeviceproperties.

Youcandownloadthelatestversionoffirmware,PCBsources,schematicand

documentationhere:

/Dfinitski/N7DDC-ATU-100-mini-and-extended-

boards/tree/master/ATU_100_EXT_board

Theschematicineditor:

/rolin791/atu-100-7x7

Purpose

Thedeviceisintendedforuseasanelementofamateurradioequipment,aspart

ofamplifiersortransceivers,orasaseparatedevicethatperformsthefunctionof

matchingtheoutputimpedanceofpoweramplifiers(PA)withantennafeeders.

Unliketheminiboard,thisdevicecancontainasetoffrom5to7inductancesand

from5to7capacitors,whichallowsit(inthemaximumconfiguration)towork

effectivelyinawidefrequencyband,overlappingradioamateurHFrangesfrom1.8

MHzto50MHz.

Thenumeroussettingsofthealgorithmsavailabletotheuserallowtheuseofa

microprocessorandacontrolcircuitinotherauto-tunerprojectsinvarious

variations.Nevertheless,thereistheconceptofabasicscheme,whichtheauthor

follows.

Thebasicmodel,accordingtotheauthor,containsasetof7switchedinductances

withanunevenpitch,from0.05μHto4.5μH,asetof7capacitorswithuneven

pitch,from10pFto1nF.Theparametersusedbydefaultguaranteereliable

operationofthedeviceinthebasicversionandare