I-Dorp-In Terminations RF Microwave

Izici:

Imvamisa ephezulu
Ukuthembeka Okuphakeme Nokuzinza

Izicelo:

Okungenantambo
Izinsimbi
Irada

XHUMANA MANJE

I-Drop-In Termination (ebuye yaziwe ngokuthi i-surface-mount termination resistor) iyingxenye yobuchwepheshe obuphezulu (SMT) eklanyelwe ngokukhethekile amasekhethi edijithali anesivinini esikhulu namasekhethi omsakazo (RF). Umgomo wayo oyinhloko ukucindezela ukubonakaliswa kwesignali nokuqinisekisa ubuqotho besignali (SI). Esikhundleni sokuxhunywa ngezintambo, "ishumekwa" noma "ifakwe phakathi" ngokuqondile ezindaweni ezithile kolayini bokudlulisa we-PCB (njengemigqa ye-microstrip), esebenza njengesinqamuleli sokunqanyulwa esihambisanayo. Iyingxenye ebalulekile ekuxazululeni izinkinga zekhwalithi yesignali enesivinini esiphezulu futhi isetshenziswa kabanzi emikhiqizweni ehlukahlukene eshumekiwe, kusukela kumaseva ekhompyutha kuya engqalasizinda yokuxhumana.

Izici:

1. Ukusebenza okukhethekile kwemvamisa ephezulu kanye nokufanisa okunembe kwe-impedance
I-Ultra-Low Parasitic inductance (ESL): Kusetshenziswa izakhiwo ezime mpo ezithuthukile nobuchwepheshe bezinto ezithuthukisiwe (njengobuchwepheshe befilimu emincane), inductance yeparasitic incishiswa (amanani anembile okumelana: Inikeza amanani okumelana anembe kakhulu futhi azinzile), iqinisekisa ukuthi ukunqanyulwa kufana ncamashi nomugqa wesici, 5Ω 75Ω, 100Ω), ukukhulisa ukumuncwa kwamandla esignali nokuvimbela ukuboniswa.
Ukusabela kwefrikhwensi okuhle kakhulu: Igcina izici zokumelana ezinzile phezu kwebanga elibanzi lefrikhwensi, ezisebenza kakhulu kunezimelaphi zendabuko ze-axial noma ze-radial lead.
2. Idizayini yesakhiwo ezalelwe ukuhlanganiswa kwe-PCB
Isakhiwo esime mpo esiyingqayizivele: Ukugeleza kwamanje ku-perpendicular endaweni yebhodi le-PCB. Ama-electrode amabili atholakala phezulu nangaphansi kwengxenye, axhunywe ngokuqondile kungqimba lwensimbi yomugqa wokudlulisela kanye nongqimba lomhlabathi, enza indlela yamanje emfushane kakhulu futhi anciphisa ngokuphawulekayo inductance ye-loop ebangelwa imikhondo emide ye-resistors.
Ubuchwepheshe obujwayelekile be-surface-mount (SMT): Ihambisana nezinqubo zokuhlanganisa ezizenzakalelayo, ezifanele ukukhiqizwa kwezinga elikhulu, ukuthuthukisa ukusebenza kahle nokuvumelana.
Okubambene nokonga isikhala: Osayizi bephakeji abancane (isb, 0402, 0603, 0805) bonga isikhala se-PCB esibalulekile, okuyenza ilungele imiklamo yebhodi enokuminyana okuphezulu.
3. Ukuphatha amandla aphezulu nokuthembeka
Ukuchithwa kwamandla okusebenzayo: Naphezu kobukhulu bawo obuncane, idizayini ibangela ukuchithwa kwamandla, okuyenza ikwazi ukuphatha ukushisa okukhiqizwa phakathi nokunqanyulwa kwesignali yesivinini esikhulu. Izilinganiso zamandla amaningi ziyatholakala (isb, 1/16W, 1/10W, 1/8W, 1/4W).
Ukuthembeka okuphezulu nokuzinza: Iqasha amasistimu wezinto ezibonakalayo azinzile nezakhiwo eziqinile, enikeza amandla angcono kakhulu emishini, ukumelana nokushaqeka okushisayo, nokuthembeka kwesikhathi eside, okuyenza ifanelekele izicelo ezifunwa yizimboni.

Izicelo:

1. Ukunqanyulwa kwamabhasi edijithali anesivinini esikhulu
Emabhasini ahambisanayo anesivinini esiphezulu (isb., DDR4, DDR5 SDRAM) kanye namabhasi ahlukile, lapho amazinga okudlulisela isignali ephakeme kakhulu, izimelambisi ze-Drop-In Termination zibekwe ekupheleni komugqa wokudlulisela (ukuphela kokunqanyulwa) noma emthonjeni (ukuphela komthombo). Lokhu kunikeza indlela enezithiyo eziphansi ekunikezeni amandla noma phansi, ukumunca amandla esignali lapho ufika, ngaleyo ndlela kuqedwe ukubonisa, ukuhlanza amagagasi esignali, nokuqinisekisa ukudluliswa kwedatha okuzinzile. Lolu uhlelo lwayo lwakudala nolusabalele kakhulu kumamojula enkumbulo (ama-DIMM) nemiklamo yebhodi lomama.
2. Amasekhethi e-RF nama-microwave
Ezisetshenziswani zokuxhumana ezingenazintambo, amasistimu e-radar, amathuluzi okuhlola, namanye amasistimu e-RF, Ukunqanyulwa Kwe-Drop-In kusetshenziswa njengomthwalo ofanayo ekukhishweni kwezihlukanisi zamandla, ama-couplers, nama-amplifiers. Ihlinzeka ngokuvimbela okujwayelekile okungu-50Ω, imunca amandla e-RF engeziwe, ithuthukise ukuhlukaniswa kwesiteshi, inciphise amaphutha okulinganisa, futhi ivimbele ukuboniswa kwamandla ukuze kuvikelwe izingxenye ze-RF ezibucayi nokuqinisekisa ukusebenza kwesistimu.
3. Izixhumanisi ze-serial ezinesivinini esikhulu
Ezimeni lapho izintambo zezinga lebhodi zinde noma i-topology iyinkimbinkimbi, njenge-PCIe, i-SATA, i-SAS, i-USB 3.0+, nezinye izixhumanisi ze-serial ezinesivinini esikhulu ezinezidingo zekhwalithi yesignali eqinile, i-Drop-In Termination yekhwalithi ephezulu isetshenziselwa ukufanisa okulungiselelwe.
4. Izisetshenziswa zenethiwekhi nezokuxhumana
Kumarutha, amaswishi, amamojula okubona, nezinye izinto zokusebenza, lapho imigqa yesignali enesivinini esiphezulu ezindizeni ezingemuva (isb, i-25G+) idinga ukulawulwa okuqinile kwe-impedance, I-Drop-In Termination isetshenziswa eduze nezixhumi ze-backplane noma ekugcineni kwemigqa yokudlulisela emide ukuze kuthuthukiswe ubuqotho besignali nokunciphisa izinga lephutha elincane (BER).

QualwaveIzinsiza ze-Dorp-In Terminations zimboza ibanga lefrikhwensi DC~3GHz. Isilinganiso sokuphatha amandla singafika kuma-watts ayi-100.