Dorp-In Terminations RF Microwave

Mawonekedwe:

High-frequency
Kudalirika Kwambiri ndi Kukhazikika

Mapulogalamu:

Zopanda zingwe
Zida
Radar

ONANI TSOPANO

Drop-In Termination (yomwe imadziwikanso kuti surface-mount termination resistor) ndi ukadaulo wapamwamba kwambiri (SMT) womwe umapangidwira mabwalo othamanga kwambiri a digito ndi ma frequency frequency (RF). Cholinga chake chachikulu ndikuletsa kuwunikira kwa ma sign ndikuwonetsetsa kukhulupirika kwa ma sign (SI). M'malo molumikizidwa kudzera pa mawaya, "imayikidwa" kapena "kulowetsedwa" m'malo enaake pamizere yopatsira ya PCB (monga mizere ya microstrip), imagwira ntchito ngati chopinga chofananira. Ndilo gawo lofunikira pakuthana ndi zovuta zamasinthidwe othamanga kwambiri ndipo amagwiritsidwa ntchito kwambiri pazinthu zosiyanasiyana zophatikizika, kuyambira ma seva apakompyuta kupita kuzinthu zolumikizirana.

Makhalidwe:

1. Kuchita kwapadera kwapafupipafupi komanso kufananitsa kofananirako
Ultra-Low parasitic inductance (ESL): Kugwiritsa ntchito zida zowoneka bwino komanso matekinoloje apamwamba kwambiri (monga ukadaulo wafilimu yopyapyala), inductance ya parasitic imachepetsedwa (makhalidwe enieni okana: Imapereka zolondola komanso zokhazikika zokana), kuwonetsetsa kuti kuyimitsa kumagwirizana ndendende ndi mawonekedwe, 5 75Ω, 100Ω), kukulitsa kuyamwa kwamphamvu kwa siginecha ndikuletsa kuwunikira.
Kuyankha kwapafupipafupi: Imakhalabe ndi mawonekedwe osasunthika pamasanjidwe osiyanasiyana, opambana kwambiri kuposa miyambo yachikhalidwe ya axial kapena ma radial lead lead.
2. Mapangidwe apangidwe obadwa kuti agwirizane ndi PCB
Wapadera ofukula kapangidwe: Mayendedwe panopa ndi perpendicular kwa PCB bolodi pamwamba. Ma elekitirodi awiriwa ali pamwamba ndi pansi pa chigawocho, cholumikizidwa mwachindunji ndi mzere wazitsulo wachitsulo ndi wosanjikiza pansi, kupanga njira yachifupi kwambiri komanso kuchepetsa kwambiri kutsekemera kwa loop chifukwa cha njira zazitali za resistors.
Ukadaulo wokhazikika wapamtunda (SMT): Umagwirizana ndi njira zopangira zopangira zokha, zoyenera kupanga zazikulu, kuwongolera magwiridwe antchito komanso kusasinthika.
Pang'onopang'ono komanso kupulumutsa malo: Mapaketi ang'onoang'ono (mwachitsanzo, 0402, 0603, 0805) amasunga malo ofunika kwambiri a PCB, kuwapangitsa kukhala abwino pamapangidwe apamwamba kwambiri.
3. Kugwiritsa ntchito mphamvu zapamwamba komanso kudalirika
Kutaya mphamvu kwamphamvu: Ngakhale kuti ndi yaying'ono, mapangidwe ake amachititsa kuti magetsi awonongeke, zomwe zimawathandiza kuti azigwira kutentha komwe kumapangidwa panthawi yothetsa chizindikiro chothamanga kwambiri. Mavoti amphamvu angapo akupezeka (mwachitsanzo, 1/16W, 1/10W, 1/8W, 1/4W).
Kudalirika kwakukulu ndi kukhazikika: Imalemba ntchito makina okhazikika azinthu ndi zida zolimba, zopatsa mphamvu zamakina, kukana kugwedezeka kwamafuta, komanso kudalirika kwanthawi yayitali, ndikupangitsa kuti ikhale yoyenera kugwiritsa ntchito mafakitale.

Mapulogalamu:

1. Kuyimitsa mabasi a digito othamanga kwambiri
M'mabasi othamanga kwambiri (mwachitsanzo, DDR4, DDR5 SDRAM) ndi mabasi osiyana, komwe ma transmissions amakwera kwambiri, zotsutsa za Drop-In Termination zimayikidwa kumapeto kwa chingwe chotumizira (kutha kumapeto) kapena pagwero (kuthetsa gwero). Izi zimapereka njira yochepetsetsa yopita kumagetsi kapena pansi, kutengera mphamvu yazizindikiro ikafika, potero imachotsa kuwunikira, kuyeretsa mawonekedwe azizindikiro, ndikuwonetsetsa kufalikira kwa data kokhazikika. Uwu ndiye ntchito yake yapamwamba kwambiri komanso yofala kwambiri mumamodule okumbukira (DIMM) ndi mapangidwe a boardboard.
2. Mabwalo a RF ndi ma microwave
Pazida zoyankhulirana zopanda zingwe, makina a radar, zida zoyesera, ndi makina ena a RF, Drop-In Termination imagwiritsidwa ntchito ngati chofananira pakutulutsa kwa zogawa mphamvu, ma couplers, ndi amplifiers. Imakhala ndi 50Ω impedance, kuyamwa mphamvu zochulukirapo za RF, kuwongolera kudzipatula kwa tchanelo, kuchepetsa zolakwika zoyezera, ndikuletsa kuwonetsa mphamvu kuti muteteze zida za RF ndikuwonetsetsa kuti dongosolo likuyenda bwino.
3. Mawonekedwe othamanga kwambiri
M'magawo omwe mawaya amtundu wa board ndi aatali kapena ma topology ndi ovuta, monga PCIe, SATA, SAS, USB 3.0+, ndi maulalo ena othamanga kwambiri okhala ndi zofunikira zamtundu wazizindikiro, Drop-In Termination yapamwamba kwambiri imagwiritsidwa ntchito pofananitsa bwino.
4. Zida zolumikizirana ndi kulumikizana
Mu ma routers, ma switch, ma module a kuwala, ndi zipangizo zina, kumene mizere yothamanga kwambiri pa ndege zam'mbuyo (mwachitsanzo, 25G +) imafuna kulamulira kosasunthika, Drop-In Termination imagwiritsidwa ntchito pafupi ndi zojambulira za backplane kapena kumapeto kwa mizere yaitali yotumizira kuti athetse kukhulupirika kwa chizindikiro ndi kuchepetsa pang'ono zolakwika (BER).

Qualwaveamapereka Dorp-In Terminations amaphimba ma frequency osiyanasiyana DC ~ 3GHz. Avereji yogwira mphamvu imafikira ma Watts 100.