Masu haɗin SMA Feeder ba kawai wani ɓangaren RF ba ne - su ne dawakai na aiki marasa waƙa a cikin tsarin rarraba sigina inda ba za a iya yin shawarwari da aminci ba. Mun ga sun gaza a ƙarƙashin keken zafin jiki a cikin tashoshin tushe na waje. Mun kalli yadda suke riƙewa-ba tare da ɓata ko asara ba-bayan zagayowar mating 5,000 a cikin dakunan gwajin wayar hannu. Kuma mun ji injiniyoyi suna cewa, *"Idan SMA mai ciyarwa ya tsaya tsayin daka, duk hanyar haɗin yanar gizon ta kasance mai iya yiwuwa."* Wannan ba maganar talla ba ce. Gaskiya ce ta fage.

Me Ya Sa Mai Feeder SMA Fiye da Mai Haɗi kawai?

Ba a bayyana SMA mai ciyarwa ta hanyar haɗaɗɗun zaren guda ɗaya kaɗai. Ayyukansa sun rataye akan sauye-sauye na zahiri guda uku: daidaiton impedance a tsakanin madaukai na mitar (yawanci 50 Ω ± 0.3 Ω daga DC zuwa 18 GHz), maimaita injina a ƙarƙashin rawar jiki, da dorewar mu'amala da iskar shaka da galling. Yawancin gazawar da muka gano ba saboda ƙira mai haɗawa ba—amma rashin daidaiton prep na kebul, aikace-aikacen juzu'i mara daidaituwa, ko amfani da hannayen rigar dielectric mara ƙima a cikin mahalli mai zafi.

Masu haɗin SMA masu ciyarwa na gaskiya suna amfani da jikin tagulla da aka yi da azurfa tare da PTFE ko faɗaɗa insulators na PTFE-ba nau'in polyethylene ba. Dole ne fil ɗin tsakiya ya kiyaye <0.02 mm runout bayan maimaita mating. Asarar shigarwa tana tsayawa ƙasa 0.15 dB a 6 GHz lokacin shigar da kyau. Rashin dawowa ya wuce 30 dB har zuwa 12 GHz. Waɗannan lambobin suna da mahimmanci saboda suna yin tasiri kai tsaye ƙimar ɗan kuskure a cikin hanyoyin haɗin gwiwa na gaba na 5G da kwanciyar hankali na lokaci a cikin ciyarwar radar tsararru.

Muna gwada kowane tsari akan MIL-STD-348B don aikin RF da IEC 61169-10 don juriyar injina. Babu gajerun hanyoyi. Babu "mai kyau." Domin a cikin tsarin eriya da aka rarraba ko saitin gwajin EMC, haɗin gefe ɗaya ya shiga cikin rashin tabbas na matakin tsarin.

Me yasa Standard SMA bai isa ba - Kuma Abin da za'a nema A maimakon haka

Wasu na iya jayayya cewa duk wani SMA mai lakabin "RF grade" zai yi. Koyaya, daidaitattun masu haɗin SMA na kasuwanci galibi suna tsallake ikon sarrafa impedance a cikin yankin miƙa mulki, suna amfani da kauri mara daidaituwa, da rashin takaddun takaddun abu. A aikace, wannan yana nufin mafi girma VSWR spikes sama da 8 GHz, tsaka-tsaki lamba a lokacin fadada zafi, da kuma wanda bai kai ba bayan hawan keke 1,200-ba 5,000+ da ake tsammani a cikin masu ciyar da manufa ba.

Bambancin yana nunawa a wurare uku:

Mun maye gurbin masu ba da gado na gado sama da 200 a cikin sake fasalin hasumiya na telecom-kuma kowane lokaci, tushen tushen ya samo asali ne zuwa juzu'in mai haɗa-zuwa-kebul mai haɗin kai, ba eriya ko amplifier ba.

Shigarwa Ba Na Zabi Ba—Yana Sashe ne na Takaddun Shaida

SMA mai ciyarwa yana aiki ne kawai da shigarwa. Torque al'amura - amma haka ma jerin. Mun ƙayyade 7-9 in-lb don bakin karfe, 5-7 in-lb don tagulla. Amma juzu'i kadai ba zai gyara prep mara kyau na kebul ba. Dole ne zurfin zurfafawa ya dace da tasha dielectric mai haɗawa. Keɓaɓɓen ɗaukar hoto dole ne ya zama iri ɗaya-ba karkatacce ba, ba mai ruɗewa ba. Kuma solder gidajen abinci? Suna tafiya * kawai * akan madugu na waje-ba saƙar garkuwa, ba foil, ba duka ba. Kuskure ɗaya yana gabatar da katsewar da ke nuna kuzari maimakon isar da shi.

Tabbacin ainihin duniya ya haɗa da:

Wannan ba wuce gona da iri ba ne. Yana da yadda kuke guje wa gano ƙaddamarwar rukunin yanar gizon ku na sa'o'i 24 ya gaza a 3 na safe saboda SMA mai ciyarwa ɗaya ya sami asarar dawowar dB 12 a 3.5 GHz na dare.

Amincewa yana farawa Kafin Juya Farko na Wuta

Zibo Jixiang Machinery Co., Ltd. baya kera masu haɗin SMA masu ciyarwa - kuma ba zai taɓa yin hakan ba. Ƙwarewarmu ta ta'allaka ne a cikin ƙwararrun tsire-tsire, busassun tsarin turmi, da hanyoyin haɗa kwalta-inda amincin sigina ya fi ƙasa da hanyoyin lodin tsari da daidaiton kwararar kayan. Amma muna * yin * haɗa mu'amalar SMA mai ciyarwa a cikin akwatunan sarrafawa ta atomatik, ƙofofin saka idanu mai nisa, da na'urorin telemetry na shuka na IoT. Kuma a cikin waɗannan aikace-aikacen, mun ƙididdige abubuwan SMA masu ciyarwa kawai waɗanda aka inganta zuwa IPC-A-620 Class 3 kuma an gwada su ta IEC 60512-2-1.

Domin amintacce ba sifa ba ce. Yana da tushe. Shi ne abin da ke barin siminti ya ci gaba da aiki har tsawon watanni 18 ba tare da raguwar sadarwa ta PLC ba-har ma a wuraren da ake yin ƙura mai nauyi ko wuraren fesa gishiri a bakin teku. Wannan shine dalilin da ya sa shukar turmi mai bushe ta SjGZD060-3G tana kiyaye daidaito tsakanin ± 0.5% a cikin batches 5,000, yayin da na'urar ta RF na kan jirgin ta tsaya a kulle a tsakiyar kumburin SCADA.

Feeder SMA ya fi ƙarfe da filastik. Ita ce hanyar haɗin farko a cikin jerin amintattu-daga firikwensin zuwa uwar garken, daga na'urar filin zuwa dashboard ɗin girgije. Zaɓi shi kamar yadda kuka zaɓi kankare tushe na ku: tare da cikakken ganowa, daftarin gwaji, da rashin haƙuri ga bambance-bambance.