Ukuphela Kokungena Kwe-RF Microwave

Izici:

Imvamisa ephezulu
Ukuthembeka Okuphezulu Nokuzinza

Izicelo:

Okungenantambo
Ukwenziwa kwezinsimbi zomculo
I-radar

XHUMANA MANJE

I-Drop-In Termination (eyaziwa nangokuthi i-surface-mount termination resistor) iyi-discrete technology (SMT) technology discrete eyenzelwe ngqo amasekethe edijithali asheshayo kanye namasekethe e-radio frequency (RF). Umsebenzi wayo oyinhloko ukucindezela ukubonakaliswa kwesignali nokuqinisekisa ubuqotho besignali (SI). Esikhundleni sokuxhunywa ngezintambo, "ifakwa" ngqo noma "ifakwe" ezindaweni ezithile emigqeni yokudlulisa ye-PCB (njengemigqa ye-microstrip), esebenza njenge-parallel termination resistor. Iyi-substance ebalulekile ekuxazululeni izinkinga zekhwalithi yesignali yesivinini esiphezulu futhi isetshenziswa kabanzi emikhiqizweni ehlukahlukene efakiwe, kusukela kumaseva ekhompyutha kuya kwingqalasizinda yokuxhumana.

Izici:

1. Ukusebenza okumangalisayo kwemvamisa ephezulu kanye nokuqhathaniswa okunembile kwe-impedance
I-Ultra-Low parasitic inductance (ESL): Kusetshenziswa izakhiwo ezintsha eziqondile kanye nobuchwepheshe bezinto ezithuthukisiwe (njengobuchwepheshe befilimu encane), i-parasitic inductance iyancishiswa (ngokuvamile amanani okumelana anembile: Inikeza amanani okumelana anembile kakhulu futhi azinzile), okuqinisekisa ukuthi i-termination impedance ifana ncamashi ne-impedance ephawulekayo yomugqa wokudlulisela (isb., 50Ω, 75Ω, 100Ω), okwandisa ukumuncwa kwamandla esignali nokuvimbela ukubonakaliswa.
Impendulo enhle kakhulu yemvamisa: Igcina izici zokumelana ezizinzile ebangeni elibanzi lemvamisa, isebenza kahle kakhulu kunezithiyo zendabuko ze-axial noma ze-radial lead.
2. Umklamo wesakhiwo owazalelwa ukuhlanganiswa kwe-PCB
Isakhiwo esiqondile esiyingqayizivele: Ukugeleza kwamanje kuqondile ebusweni bebhodi le-PCB. Ama-electrode amabili atholakala phezulu naphansi kwengxenye, axhunywe ngqo kungqimba yensimbi yomugqa wokudlulisa kanye nengqimba yomhlabathi, akha indlela yamanje emfushane kakhulu futhi anciphisa kakhulu ukugeleza kweluphu okubangelwa yizintambo ezinde zama-resistor endabuko.
Ubuchwepheshe obujwayelekile bokufaka endaweni (i-SMT): Buhambisana nezinqubo zokuhlanganisa ezenzakalelayo, bufanele ukukhiqizwa okukhulu, buthuthukisa ukusebenza kahle kanye nokuvumelana.
Incane futhi yonga isikhala: Osayizi abancane bephakheji (isb., 0402, 0603, 0805) bonga isikhala esibalulekile se-PCB, okwenza kube kuhle kakhulu ekwakhiweni kwamabhodi anabantu abaningi.
3. Ukuphathwa kwamandla aphezulu kanye nokuthembeka
Ukushabalalisa amandla okuphumelelayo: Naphezu kobukhulu bayo obuncane, umklamo ubangela ukushabalalisa amandla, okwenza ikwazi ukusingatha ukushisa okukhiqizwa ngesikhathi sokuphela kwesignali ngesivinini esikhulu. Izilinganiso zamandla eziningi ziyatholakala (isb., 1/16W, 1/10W, 1/8W, 1/4W).
Ukuthembeka okuphezulu nokuzinza: Isebenzisa izinhlelo zezinto ezizinzile nezakhiwo eziqinile, inikeza amandla amahle kakhulu okusebenza, ukumelana nokushaqeka kokushisa, kanye nokuthembeka kwesikhathi eside, okwenza ifaneleke ukusetshenziswa kwezimboni okudinga amandla.

Izicelo:

1. Ukuvalwa kwamabhasi edijithali asheshayo
Emabhasini ahambisanayo ngesivinini esikhulu (isb., i-DDR4, i-DDR5 SDRAM) kanye namabhasi ahlukile, lapho amazinga okudlulisa isignali ephezulu kakhulu, ama-resistors okunqamula i-Drop-In abekwa ekugcineni komugqa wokudlulisa (ukuphela kokuphela) noma emthonjeni (ukuphela komthombo). Lokhu kunikeza indlela yokuvimbela okuphansi eya ekuhlinzekweni kwamandla noma emhlabathini, kudonse amandla esignali lapho kufika, ngaleyo ndlela kuqedwe ukubonakaliswa, kuhlanzwe ama-waveform esignali, futhi kuqinisekiswe ukudluliselwa kwedatha okuzinzile. Lolu uhlelo lwayo oludumile nolusakazeke kakhulu kumamojula enkumbulo (ama-DIMM) kanye nemiklamo yebhodi lomama.
2. Amasekethe e-RF kanye nama-microwave
Emishinini yokuxhumana engenantambo, izinhlelo ze-radar, izinsimbi zokuhlola, kanye nezinye izinhlelo ze-RF, i-Drop-In Termination isetshenziswa njengomthwalo ohambisanayo ekuphumeni kwama-power dividers, ama-couplers, nama-amplifier. Ihlinzeka nge-standard 50Ω impedance, imunca amandla e-RF amaningi, ithuthukise ukuhlukaniswa kwesiteshi, inciphise amaphutha okulinganisa, futhi ivimbele ukubonakaliswa kwamandla ukuvikela izingxenye ze-RF ezizwelayo nokuqinisekisa ukusebenza kohlelo.
3. Izixhumi ze-serial ezisheshayo
Ezimweni lapho izintambo zebhodi zinde noma i-topology iyinkimbinkimbi, njenge-PCIe, i-SATA, i-SAS, i-USB 3.0+, nezinye izixhumanisi ze-serial ezisheshayo ezinezidingo zekhwalithi yesignali eqinile, i-Drop-In Termination yangaphandle yekhwalithi ephezulu isetshenziselwa ukufanisa okulungiselelwe.
4. Imishini yokuxhumana kanye neyokuxhumana
Kuma-router, amaswishi, amamojula okukhanya, kanye neminye imishini, lapho imigqa yesignali yesivinini esiphezulu kuma-backplanes (isb., 25G+) idinga ukulawulwa okuqinile kwe-impedance, i-Drop-In Termination isetshenziswa eduze kwezixhumi ze-backplane noma emaphethelweni emigqa emide yokudlulisa ukuze kuthuthukiswe ubuqotho besignali nokunciphisa izinga lamaphutha e-bit (BER).

I-QualwaveIzimpahla ze-Dorp-In Terminations zimboza ububanzi bemvamisa ye-DC~3GHz. Amandla okuphatha ajwayelekile afinyelela kuma-watts ayi-100.