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UGiovanni D'Amore uxoxe ngokusetyenziswa kwabahlalutyi be-impedance kunye nokulungiswa kobuchwephesha ukubonisa iimpawu zedielectric kunye nemagnethi.
Siqhele ukucinga malunga nenkqubela phambili yezobuchwepheshe ukusuka kwizizukulwana zemodeli yeefowuni eziphathwayo okanye i-semiconductor process nodes.Ezi zibonelela nge-shorthand eluncedo kodwa iqhubela phambili efihlakeleyo ekuvumeleni ubuchwephesha (njengenkalo yesayensi yezinto).
Nabani na othe wathatha iTV yeCRT okanye wavula umbane omdala uya kwazi into enye: Awunakusebenzisa amacandelo enkulungwane yama-20 ukwenza i-elektroniki yenkulungwane yama-21.
Ngokomzekelo, ukuqhubela phambili ngokukhawuleza kwizinto zesayensi kunye ne-nanotechnology zenze izinto ezintsha kunye neempawu ezifunekayo ukwakha i-high-density, i-inductors ephezulu yokusebenza kunye ne-capacitors.
Ukuphuhliswa kwezixhobo ezisebenzisa ezi zixhobo kufuna umlinganiselo ochanekileyo weempawu zombane kunye nemagnethi, ezifana nokuvunyelwa kunye nokungena, ngaphezu koluhlu lwee-frequencies zokusebenza kunye neqondo lokushisa.
Izinto ze-Dielectric zidlala indima ephambili kumacandelo e-elektroniki njengama-capacitors kunye ne-insulators.I-dielectric constant of material inokulungiswa ngokulawula ukubunjwa kwayo kunye / okanye i-microstructure, ngakumbi i-ceramics.
Kubaluleke kakhulu ukulinganisa iipropathi ze-dielectric zezinto ezintsha ekuqaleni komjikelezo wophuhliso lwecandelo ukuqikelela ukusebenza kwazo.
Iimpawu zombane zezixhobo ze-dielectric zibonakaliswa yimvume yabo eyinkimbinkimbi, equkethe iindawo zangempela kunye neengcamango.
Inxalenye yokwenene ye-dielectric constant, ekwabizwa ngokuba yi-dielectric constant, imele ukukwazi kwezinto zokugcina amandla xa iphantsi kombane. , okwenza kube luncedo kwi-high-density capacitors.
Izinto eziphathekayo ezine-dielectric constants ezisezantsi zinokusetyenziswa njengezikhuselo eziluncedo kwiinkqubo zokuhambisa umqondiso, ngokuchanekileyo ngenxa yokuba azikwazi ukugcina umthamo omkhulu wamandla, ngaloo ndlela zinciphisa ukulibaziseka kokusasazwa komqondiso ngazo naziphi na iingcingo ezifakwe kuzo.
Inxalenye ecingelwayo yemvumelwano eyinkimbinkimbi imele amandla achithwa yi-dielectric material kwintsimi yombane.Oku kufuna ukulawulwa ngokucophelela ukuphepha ukutshabalalisa amandla amaninzi kwizixhobo ezifana ne-capacitors ezenziwe ngezi zixhobo ezintsha ze-dielectric.
Kukho iindlela ezahlukeneyo zokulinganisa i-dielectric constant.Indlela yeplate ehambelanayo ibeka izinto phantsi kovavanyo (MUT) phakathi kwee-electrode ezimbini.I-equation eboniswe kuMzobo 1 isetyenziselwa ukulinganisa i-impedance yezinto eziphathekayo kwaye iyiguqulele kwi-permitivity eyinkimbinkimbi, leyo. ibhekisa kubukhulu bezinto kunye nommandla kunye nobubanzi be-electrode.
Le ndlela isetyenziselwa ubukhulu becala ukulinganisa amaza aphantsi.Nangona umgaqo ulula, umlinganiselo ochanekileyo unzima ngenxa yeempazamo zokulinganisa, ngakumbi kwizinto ezinelahleko ephantsi.
Imvume eyinkimbinkimbi iyahluka ngokuphindaphindiweyo, ngoko kufuneka ihlolwe kwi-frequency yokusebenza.Kwi-frequencies ephezulu, iimpazamo ezibangelwa yinkqubo yokulinganisa ziya kwanda, okubangelwa imilinganiselo engachanekanga.
Isixhobo sokuvavanya i-dielectric material test (njenge-Keysight 16451B) inee-electrodes ezintathu.Ezibini zazo zenza i-capacitor, kwaye okwesithathu inika i-electrode ekhuselayo.I-electrode yokukhusela iyimfuneko kuba xa intsimi yombane isungulwa phakathi kwee-electrodes ezimbini, inxalenye ye-electrode ekhuselayo. intsimi yombane iya kuhamba nge-MUT efakwe phakathi kwabo (jonga uMfanekiso 2).
Ubukho balo mmandla we-fringe bungabangela ukulinganisa okuphosakeleyo kwe-dielectric constant ye-MUT.I-electrode yokukhusela ithatha i-current flowing through the fringe field, ngaloo ndlela iphucula ukuchaneka komlinganiselo.
Ukuba ufuna ukulinganisa iipropathi ze-dielectric zezinto eziphathekayo, kubalulekile ukuba ulinganise izinto eziphathekayo kuphela kwaye akukho nto yimbi.Ngenxa yesi sizathu, kubalulekile ukuqinisekisa ukuba isampuli yezinto eziphathekayo zithe tyaba kakhulu ukuphelisa naziphi na izikhewu zomoya phakathi kwayo kunye neendawo zokuhlambela. i-electrode.
Kukho iindlela ezimbini zokuphumeza oku.Eyokuqala kukusebenzisa i-electrodes yefilimu encinci kumphezulu wezinto eziza kuvavanywa.Okwesibini kukufumana imvume eyinkimbinkimbi ngokuthelekisa i-capacitance phakathi kwe-electrodes, elinganiswa phambi kobukho kunye nokungabikho. zemathiriyeli.
I-electrode yokugada inceda ekuphuculeni ukuchaneka komlinganiselo kumaza aphantsi, kodwa inokuchaphazela kakubi intsimi ye-electromagnetic kwi-frequencies ephezulu.Abanye abavavanyi babonelela ngezixhobo ezikhethiweyo zedielectric material kunye ne-compact electrode enokwandisa uluhlu oluluncedo lwefrikhwensi yolu buchule bokulinganisa. nceda ukuphelisa imiphumo ye-fringing capacitance.
Iimpazamo eziseleyo ezibangelwa zizixhobo kunye nabahlalutyi zingancitshiswa yisekethe evulekileyo, isiphaluka esifutshane kunye nembuyekezo yomthwalo.Abanye abahlalutyi be-impedance baye bakhela kulo msebenzi wembuyekezo, onceda ukwenza imilinganiselo echanekileyo kwi-wide frequency range.
Ukuphonononga indlela iipropati zezixhobo ze-dielectric zitshintsha ngayo ngobushushu zifuna ukusetyenziswa kwamagumbi alawulwa ngubushushu kunye neentambo ezingenakunqanda ukushisa.Abanye abahlalutyi banikezela isofthiwe yokulawula iseli eshushu kunye nekhebula elingenakunqanda ukushisa.
Njengezinto ze-dielectric, izinto ze-ferrite ziphucula ngokuthe ngcembe, kwaye zisetyenziswa ngokubanzi kwizixhobo ze-elektroniki njengamacandelo e-inductance kunye nemagnethi, kunye namacandelo e-transformers, i-magnetic field absorbers kunye ne-sppressors.
Iimpawu eziphambili zezi zixhobo zibandakanya ukunyanzeliswa kunye nokulahlekelwa kwii-frequencies zokusebenza ezibalulekileyo.I-impedance analyzer ene-magnetic material fixture inokubonelela ngemilinganiselo echanekileyo kunye nokuphindaphindiweyo kwi-wide frequency range.
Njengemathiriyeli ye-dielectric, ukufikeleleka kwezixhobo zemagneti luphawu oluntsokothileyo olubonakaliswa kwiindawo zokwenyani kunye nengqikelelo.Ixesha lokwenyani limele ukukwazi kwesixhobo sokuqhuba i-magnetic flux, kwaye igama lentelekelelo limele ilahleko kwizinto eziphathekayo.Izinto ezinobuchwephesha obuphezulu bunokuba isetyenziselwa ukunciphisa ubungakanani kunye nobunzima benkqubo yamagnetic.Icandelo lelahleko lokungena kwemagnethi lingancitshiswa ukuze lisebenze ngokugqibeleleyo kwizicelo ezinjengeziguquli, okanye zonyuswe kwizicelo ezinje ngokukhusela.
I-permeability eyinkimbinkimbi inqunywe yi-impedance ye-inductor eyenziwe yinto.Kwiimeko ezininzi, iyahluka ngokuphindaphindiweyo, ngoko kufuneka ibonakaliswe kwi-frequency yokusebenza.Kwi-frequencies ephezulu, ukulinganisa ngokuchanekileyo kunzima ngenxa ye-impedance ye-parasitic ukulungiswa.Kwizinto ezilahlekileyo eziphantsi, i-angle yesigaba se-impedance ibaluleke kakhulu, nangona ukuchaneka komlinganiselo wesigaba ngokuqhelekileyo akwanelanga.
Ukungena kwemagnethi nako kuyatshintsha kubushushu, ngoko ke inkqubo yokulinganisa kufuneka ikwazi ukuvavanya ngokuchanekileyo iimpawu zobushushu kuluhlu olubanzi lwamaza.
I-permeability entsonkothileyo inokufunyanwa ngokulinganisa i-impedance ye-magnetic materials.Oku kwenziwa ngokusonga ezinye iingcingo kwizinto eziphathekayo kunye nokulinganisa i-impedance ehambelana nokuphela kocingo. yommandla wemagnethi kunye nokusingqongileyo.
Ukulungiswa kovavanyo lwemagnethi (jonga uMzobo 3) ubonelela nge-inductor enye-turn ejikeleze ikhoyili ye-toroidal ye-MUT.Akukho ukuvuza okuvuzayo kwi-single-turn inductance, ngoko ke i-magnetic field kwi-fixture ingabalwa nge-electromagnetic theory. .
Xa isetyenziswe ngokubambisana ne-impedance / i-analyzer yezinto eziphathekayo, imilo elula ye-coaxial fixture kunye ne-toroidal MUT inokuvavanywa ngokuchanekileyo kwaye inokufikelela kwi-frequency coverage ukusuka kwi-1kHz ukuya kwi-1GHz.
Iphutha elibangelwa yinkqubo yokulinganisa inokupheliswa phambi kokulinganisa.Impazamo ebangelwa ngumhlalutyi we-impedance inokulinganiswa ngokulungiswa kwephutha lexesha lesithathu.Kwi-frequencies ephezulu, i-low-loss capacitor calibration inokuphucula ukuchaneka kwe-angle angle.
Uluhlu lunokubonelela ngomnye umthombo wempazamo, kodwa nayiphi na intsalela yokufaka i-inductance inokubuyiselwa ngokulinganisa isisimbiso ngaphandle kwe-MUT.
Njengomlinganiselo we-dielectric, igumbi lobushushu kunye neentambo ezikwazi ukumelana nobushushu ziyafuneka ukuze kuphononongwe iimpawu zobushushu bezinto zombane.
Iifowuni eziphathwayo ezingcono, iinkqubo zokuncedisa abaqhubi eziphucuke ngakumbi kunye neelaptops ezikhawulezayo zonke zixhomekeke kwinkqubela phambili eqhubekayo kuluhlu olubanzi lweetekhnoloji.Sinokulinganisa inkqubela phambili yenkqubo ye-semiconductor node, kodwa uthotho lwetekhnoloji ezixhasayo zikhula ngokukhawuleza ukwenza ezi nkqubo zintsha zibe zisetyenziswe.
Inkqubela phambili yamva nje kwizinto zesayensi kunye ne-nanotechnology yenze ukuba kube lula ukuvelisa izixhobo ezineempawu ezingcono ze-dielectric kunye nemagnethi kunangaphambili.Nangona kunjalo, ukulinganisa oku kuqhubela phambili kuyinkqubo enzima, ngakumbi kuba akukho mfuneko yokusebenzisana phakathi kwezinto kunye nezixhobo apho. zifakiwe.
Izixhobo ezicingisiswe kakuhle kunye nezixhobo zinokoyisa uninzi lwezi ngxaki kwaye zizise imilinganiselo yepropathi ethembekileyo, ephindaphindwayo nesebenzayo yedielectric kunye nemagnethi kubasebenzisi abangenabo ubuchwephesha obuthile kule mimandla. i-electronic ecosystem.
"I-Electronic Weekly" isebenzisana ne-RS Grass Roots ukugxila ekwaziseni iinjineli ze-elektroniki eziqaqambileyo e-UK namhlanje.
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Funda ushicilelo lokuqala lwe-Electronic Weekly kwi-intanethi: Septemba 7, 1960. Siye saskena uhlelo lokuqala ukuze ulonwabele.
Funda isongezelelo sethu esikhethekileyo esibhiyozela iminyaka engama-60 yeVeki ye-Electronic kwaye sijonge phambili kwikamva loshishino.
Funda ushicilelo lokuqala lwe-Electronic Weekly kwi-intanethi: Septemba 7, 1960. Siye saskena uhlelo lokuqala ukuze ulonwabele.
Mamela le podcast kwaye uphulaphule i-Chetan Khona (uMlawuli we-Industry, Vision, Healthcare and Science, Xilinx) uthetha malunga nendlela i-Xilinx kunye ne-semiconductor industry isabela ngayo kwiimfuno zabathengi.
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