Ukwenziwa kwe-Arlon 25N PCB | Umkhiqizi weBhodi ye-Microwave

Lapho beklama izinhlelo zokusebenza ze-microwave, ama-antenna anezigaba, kanye neziteshi zokwamukela umsindo ophansi, onjiniyela behadiwe badinga i-substrate eletha ukulahlekelwa okuphansi kakhulu kanye nokuqina kwesigaba okumangalisayo. I-Arlon 25N iyisistimu ye-thermoset resin ehlanganisiwe ehlanganiswe kahle kakhulu, ehlanganiswe ngengilazi eyenzelwe ngqo lezi zindawo ze-RF ezidingayo. Ngokunikeza ukusebenza okuphezulu kokushisa kanye nokwemishini uma kuqhathaniswa ne-PTFE yendabuko, ivala igebe phakathi kokunemba kukagesi kanye nokukhiqizwa okuthembekile.

Ngenxa yokuthi icubungula ngendlela efanayo ne-FR-4 ejwayelekile ngenkathi inikeza ubuqotho besignali ye-microwave, i-Arlon 25N iyisinqumo esiphezulu sokukhiqizwa kwe-RF okungabizi kakhulu, okukhiqiza kakhulu. Njengomkhiqizi we-PCB we-Arlon 25N waseShayina onolwazi , i-Highleap Electronics iklame lo mhlahlandlela ukukusiza ukuthi uthuthukise izindleko zakho zokuqoqa, usheshise izikhathi zakho zokukhokha ze-prototype, futhi uqinisekise ukuhlanganiswa kwe-turnkey okungenamthungo kwemikhiqizo yakho ye-microwave ethuthukisiwe.

Cela Isilinganiso Sokwenziwa Kwe-Arlon 25N

Imininingwane Yobuchwepheshe ye-Arlon 25N Microwave Laminate

Ngokungafani nezinto ezisezingeni eliphezulu kakhulu ze-Dk ezisetshenziswa kuphela ekwenzeni i-miniaturization enamandla (njenge- Taconic CER-10 ), i-Arlon 25N yenzelwe ubuqotho besignali ye-broad-spectrum. Ngenxa yokuthi iyi-thermoset resin, ayihlushwa “ukugeleza okubandayo” noma ukwanda kokushisa kwe-Z-axis okweqile okuvame ukuhlotshaniswa nama-laminates e-Teflon ahlanzekile.

Uma onjiniyela bethu be-CAM bebuyekeza umklamo wakho, silinganisa imigqa yethu yokukhiqiza ngokusekelwe kulezi zilinganiso ezibalulekile zeshidi ledatha:

• I-Dielectric Constant (Dk): 3.28 ± 0.05 (ku-10 GHz). Le DD ezinzile kakhulu ivame ukuhlolwa onjiniyela kanye nezindawo ezisezingeni lezindiza ezifana i-laminate ephansi esuselwa ku-PTFE kokuphakelwa kwe-antenna okuyinkimbinkimbi.
• I-Disipation Factor (Df): 0.0025 (ku-10 GHz). Iqinisekisa ukulahlekelwa kokufakwa okuphansi kakhulu, igcina amandla esignali kuma-front-ends e-amplifier yomsindo ophansi (LNA).
• I-Glass Transition Temperature (Tg): >250°C. Lokhu kuqina kokushisa okumangalisayo kuvumela ibhodi ukuthi lisinde emijikelezweni eminingi ye-SMT engenalo i-lead ngaphandle kokuhlukanisa noma ukuphakamisa amaphedi.

Ukubekezelelana Kokuqopha Ukulandelela Kwemiklamo Evame Kakhulu

Isithiyo esiyinhloko sokukhiqiza kunoma yiliphi ibhodi lesifunda eliphrintiwe nge-microwave ukulawula ububanzi be-trace. Ngisho nokushintsha okuncane kakhulu kobubanzi be-trace, ukujiya kwethusi, noma ukusika okungaphansi kwe-etch kuzoshintsha kakhulu i-impedance yesici. Ibhavu elijwayelekile lokusika amakhemikhali lizokweqa kalula le migqa, lidale iphrofayili ye-trace trace ebangela ukubonakaliswa okukhulu kwesignali.

Ukuqinisekisa ukuhambisana okuqondile nesofthiwe yakho yokulingisa i-RF, sisebenzisa ubuchwepheshe be-Laser Direct Imaging (LDI) kanye ne-vacuum etching. Sisebenzisa amazinga afanayo okucubungula amagagasi e-millimeter aqinile ku-Arlon 25N njengoba senza lapho senza amabhodi e-radar ezimoto angu-77GHz njenge -Isola Astra MT77 . Sicebisa kakhulu abaklami ukuthi basho ithusi eliyisisekelo elingu-0.5 oz (18 μm) noma elingu-1 oz (35 μm), njengoba ithusi elisindayo ngokwemvelo lidinga ukuqoshwa kwamakhemikhali okunamandla okunciphisa iminonjana ye-RF ngokungenakugwenywa.

Inzuzo yeThermoset: Ngokusebenzisa iPlating kanye nokuzinza

Inzuzo enkulu ye- Arlon 25N PCB ukuthi iyakwazi ukwenziwa phansi efektri. Ngokungafani nama-laminate e-PTFE angenamanzi njenge- Taconic RF-60A , i-Arlon 25N ayidingi i-vacuum plasma desmear ekhethekile kakhulu noma i-sodium wet etching eyingozi ukuze ilungiselele izindonga ze-via ukuze i-copper plating. Icubungula ngemigqa ye-alkaline permanganate desmear ejwayelekile njenge-FR-4 ejwayelekile, inciphisa kakhulu izingozi zokwenziwa futhi ivimbele izikhala ze-plated through-hole (PTH).

Ngaphezu kwalokho, uhlelo lwe-resin oluxhumene luhlinzeka ngokuzinza okumangalisayo kobukhulu. Uma sisusa izindiza ezisindayo zethusi ngesikhathi sokwenziwa kwezingqimba eziningi, i-Arlon 25N imelana nokuncishiswa okukhulu kwe-anisotropic okuhlupha izinhlanganisela ze-PTFE ezithambile njenge -Taconic TLX-8 . Lokhu kusenza sikwazi ukubamba ukubekezelelana kokubhaliswa okuqinile kakhulu kuma-stackups e-RF ayinkimbinkimbi, aphezulu.

Idizayini ye-Hybrid Stackup yokuthuthukisa izindleko ze-Arlon 25N

Ngenxa yokuthi ama-laminate e-microwave aphansi kakhulu abiza kakhulu kunezinhlelo ze-epoxy ezijwayelekile, ukwakha ibhodi eligcwele izingqimba eziyi-10 nge-Arlon 25N akuvamile ukuthi kube nezindleko ezingcono ngaphandle kokuthi wonke umklamo usebenza endleleni ye-microwave.

Isixazululo esijwayelekile embonini siyi-stackup ye-hybrid engalingani. Sigcina i-Arlon 25N kuphela yezendlalelo zesignali ze-RF ezibalulekile ngenkathi siyibopha ngezendlalelo zedijithali ezithembeke kakhulu. Ngenxa yokuthi i-Arlon 25N iyi-resin ye-thermoset, yabelana ngephrofayili ye-kinetic ehambisanayo kakhulu ne-laminates yedijithali esheshayo njenge- Isola I-Speed ​​​​kanye ne-high-Tg FR-4. Lokhu kuhambisana kusenza sikwazi ukulungisa ibhodi ngaphandle kokuphazamiseka, sehlise izindleko zakho zebhodi elingenalutho ngo-40-60% uma kuqhathaniswa ne-stackups ye-RF ye-monolithic emsulwa ngaphandle kokudala i-warpage engalingani.

Izikhathi Zokuhola Zephrothokholi kanye Nokuqinisekiswa Kokuvinjelwa

Konjiniyela be-RF, i-prototype esheshayo ayisebenzi uma yehluleka ukusebenza njengoba kulingisiwe. Ukuphumelela kwe-prototyping yemvamisa ephezulu kudinga inhlanganisela yokutholakala kwezinto ezikhona esitokweni kanye nokuqinisekiswa kukagesi okuqinile. Sinciphisa ukubambezeleka kweketanga lokuphakelwa ngokugcina ubukhulu obujwayelekile be-Arlon, okusivumela ukuthi siqale ukukhiqiza ngokushesha ngemuva kokuvunyelwa kwe-DFM.

Ngaphezu kwalokho, i-geometry ejwayelekile ayanele kumabhodi e-microwave. Sigunyaza ukuhlolwa kwe-Time Domain Reflectometry (TDR) kuzo zonke izakhiwo ze-high-frequency. Sihlola amakhuphoni afanelekayo akhiwe kuphaneli yakho yokukhiqiza eqondile ukuze sinikeze isilinganiso esingokoqobo semigqa yokudlulisa eyenziwe. Ukuthunyelwa ngakunye kwe-prototype kufaka phakathi iphakheji yokuqinisekisa ebhaliwe ehlanganisa izilinganiso ze-TDR impedance kanye nokuhlaziywa kwesigaba esinqunyiwe.

Umhlangano Wokujika we-Arlon 25N PCBs

Uma i-Arlon 25N PCB eyenziwe ngomumo isiphumile esitolo, konke ukudluliselwa ngokomzimba kuletha ingozi. Izindawo ze-RF zisengozini enkulu yokuphatha imihuzuko, umonakalo onqenqemeni, kanye nokuvezwa kokushisa okungalawulwa. Emikhiqizweni ye-RF ethuthukisiwe, ukuhlanganiswa kwe-turnkey—lapho ukwenziwa, ukutholakala kwezingxenye, ukubekwa kwe-SMT, kanye nokuhlolwa kuphathwa ngaphansi kophahla olulodwa—kuyisu lokuthenga eliphephile nelisebenza kahle kakhulu.

Amakhono ethu okuguqula ahlanganisiwe amabhodi e-RF asebenza imvamisa ephezulu afaka:

• Ukubekwa kwe-SMT okunembile: Ukunemba okuqondile kokujikeleza kanye nendawo yezixhumi zokuqalisa ezinqenqemeni, amanethiwekhi afanayo ahlukaniswe kahle, kanye nezindlela zokwakheka kwemisebe ezilinganayo.
• Iphrofayili Yokushisa Elungiselelwe: Ukugeleza kabusha okulawulwa yi-nitrogen ukuthuthukisa ukuqina kokumanzisa ngaphandle kokucindezela kakhulu i-substrate.
• Ukuhlolwa kwe-3D X-Ray kanye ne-AOI: Ukuhlola okubonakalayo akukwazi ukuqinisekisa amalunga afihliwe. Sisebenzisa i-3D X-ray (AXI) ukuthola amaphutha okuvaleka, ukubopha, kanye nokuqondanisa ngaphansi kwamaphakheji aqediwe phansi (ama-QFN, amamojula e-LGA) kanye namamojula e-RF avikelwe.

Ngokugcina konke ukwakhiwa ngaphansi kohlaka olulodwa lwekhwalithi, ukuhlanganiswa kwe-turnkey kunciphisa izingozi zokusingatha, kuqinisekisa ukuhambisana kwesivuno, futhi kuhlinzeka ngoshintsho olusheshayo noluqinisekisiwe ngokugcwele kusuka ebhodini elingenalutho kuya ohlelweni lwe-RF olulungele ukukhiqizwa.