Yintoni ubhedu?
Okubizwa ngokuba kuthululwe ubhedu kukusebenzisa indawo engasetyenziswanga kwibhodi yesiphaluka njengendawo yokubhekisela kwaye emva koko uyigcwalise ngobhedu oluqinileyo.Ezi ndawo zobhedu zikwabizwa ngokuba kukuzaliswa kobhedu.
Ukubaluleka kokugubungela ubhedu kukunciphisa ukunyanzeliswa kocingo lomhlaba kunye nokuphucula amandla okuthintela ukuphazamiseka;ukunciphisa ukuhla kwamandla ombane kunye nokuphucula ukusebenza kakuhle konikezelo lwamandla;ukudibanisa nocingo oluphantsi kunokunciphisa indawo ye-loop.
Kwakhona ngenjongo yokwenza i-PCB ibe ingagqwethekiyo kangangoko kunokwenzeka ngexesha le-soldering, uninzi lwabavelisi be-PCB baya kufuna ukuba abaqulunqi be-PCB bazalise iindawo ezivulekileyo ze-PCB ngobhedu okanye ngeengcingo zomhlaba ezifana negridi.Ukuba ubhedu aluphathwanga ngokufanelekileyo, luya kuthi Ukuba inzuzo ayifanelanga ilahleko, ngaba ukugquma ubhedu "kunoncedo olungaphezulu kunelibi" okanye "izinto ezingeloncedo ngaphezulu kweenzuzo"?
Wonke umntu uyazi ukuba phantsi kweemeko eziphezulu ze-frequency, i-capacitance yokusabalalisa i-wiring kwibhodi yesekethe eprintiweyo iya kusebenza.Xa ubude bungaphezulu kwe-1/20 ye-wavelength ehambelanayo yefrikhwensi yengxolo, umphumo we-antenna uya kwenzeka, kwaye ingxolo iya kukhutshwa nge-wiring.Ukuba kukho ukugalelwa kobhedu olusekelwe kakubi kwi-PCB, ukugalela ubhedu kuba sisixhobo sokusasaza ingxolo.
Ngoko ke, kwisiphaluka esiphezulu se-frequency, ungacingi ukuba ucingo oluphantsi luxhunyiwe phantsi.Olu “lucingo olusemhlabeni”.Kuyimfuneko ukugqobhoza imingxuma kwi-wiring kunye nesithuba esingaphantsi kwe-λ/20.I-plane yomhlaba ye-laminate "ngumhlaba omhle".Ukuba i-copper copper iphathwa ngokufanelekileyo, ukugquma kobhedu akugcini nje ukwandisa okwangoku, kodwa kudlala indima emibini yokuphazamiseka kokukhusela.
Iifom ezimbini zokugquma ubhedu
Ngokuqhelekileyo kukho iindlela ezimbini ezisisiseko zokugquma ubhedu, ezizezi, indawo enkulu yokugquma ubhedu kunye nobhedu lwegridi.Kuhlala kubuzwa ukuba ingaba indawo enkulu yobhedu ingcono kunegridi yobhedu.Akulunganga ukwenza ngokubanzi.
ngoba?Ukugquma kobhedu kwindawo enkulu kunemisebenzi emibini yokunyusa yangoku kunye nokukhusela, kodwa ukuba i-copper yendawo enkulu isetyenziselwa i-soldering wave, ibhodi inokuphakamisa kunye namadyunguza.Ke ngoko, kwindawo enkulu yokugquma ubhedu, iigrooves ezininzi zihlala zivulwa ukukhulula i-blistering ye-foil yobhedu.Njengoko kubonisiwe ngezantsi:
Igridi ecocekileyo yobhedu isetyenziselwa kakhulu ukukhusela, kwaye umphumo wokunyusa okwangoku uyancipha.Ukususela kumbono wokutshatyalaliswa kobushushu, igridi ilungile (inciphisa indawo yokufudumala yobhedu) kwaye idlala indima ethile ekukhuseleni i-electromagnetic shielding.Ngokukodwa kwiisekethe ezinje ngokubamba, njengoko kubonisiwe ngezantsi:
Kufuneka kucaciswe ukuba igridi yenziwe ngokulandelelana kwiindlela ezinqamlekileyo.Siyazi ukuba kwisekethe, ububanzi bomkhondo buhambelana "nobude bombane" obuhambelanayo ngokuphindaphindiweyo kwebhodi yesekethe (ubukhulu bokwenene buhlulwe yi-Frequency yedijithali ehambelana ne-frequency yokusebenza iyafumaneka, jonga iincwadi ezinxulumene neenkcukacha. ).
Xa i-frequency yokusebenza ingekho phezulu kakhulu, mhlawumbi umphumo wemigca yegridi ayibonakali kakhulu.Emva kokuba ubude bombane buhambelana ne-frequency yokusebenza, kuya kuba kubi kakhulu.Uya kufumanisa ukuba isekethe ayisebenzi kakuhle kwaphela, kwaye inkqubo ikhupha ukuphazamiseka kuyo yonke indawo.uphawu lwe.
Isiphakamiso kukuba ukhethe ngokweemeko zokusebenza zebhodi yesekethe eyenzelwe, musa ukubambelela kwinto.Ngoko ke, iisekethe eziphezulu ze-frequency zineemfuno eziphezulu kwiigridi ze-multi-purpose for anti-interference, kunye neesekethe eziphantsi kwee-frequency circuits zineengqungquthela ezinkulu, ezifana ne-copper epheleleyo esetyenziswa ngokuqhelekileyo.