Tsamaiso ea Thermal ho RF le Microwave PCBs

Taolo ea mocheso ho li-PCB tsa RF le tsa microwave e bapala karolo ea bohlokoa ho netefatseng ts'ebetso e tsitsitseng le ts'epo tlas'a ts'ebetso ea maqhubu a phahameng. Ha matla a lets'oao le bongata ba likarolo li ntse li eketseha, ho qhalana ha mocheso ka katleho ho ba bohlokoa ho thibela ho sisinyeha ha ts'ebetso, phetoho ea impedance, le ho senyeha ha sesebelisoa.

Phephetso e matlafala ho maqhubu a microwave moo le ho feto-fetoha ho fokolang ha mocheso ho ka senyang boitšoaro ba potoloho. Baenjiniere ba qapang litsamaiso tsa RF ba tlameha ho sebetsana le maikutlo a mocheso ho tloha methating ea pele ea meralo ho boloka botsitso ba matšoao le ho lelefatsa nako ea bophelo ba lits'ebetso tse batloang.

Hobaneng ha Tsamaiso ea Thermal e le Bohlokoa ho RF le Microwave Circuits

Mocheso o ama ka ho toba tshebetso ya maqhubu a phahameng ka mekgwa e mengata. Dithempereichara tse phahameng di baka diphetoho tse sa fetoheng tsa dielectric disebedisweng tsa substrate, tse fetolang ho bapisa impedance le botsitso ba mokgahlelo tseleng ya letshwao. Di-amplifier tsa motlakase, di-amplifier tsa lerata le tlase, di-filters, le marangrang a ho bapisa a antenna di bontsha kutlwisiso e phahameng ya diphetoho tsa mocheso, ka diparamitha tsa tshebetso di ntse di tswela ka ntle ho difensetere tsa di-specification ha mocheso wa di-junction o ntse o phahama. Bakeng sa diboto tsa TC600 bakeng sa meralo ya RF e hlokang mocheso , dikakanyo tsa phallo ya mocheso di lokela ho hlahlojwa kgahlanong le kaho ya laminate ya sebele, sebopeho sa koporo le sebopeho sa ho phodisa sa mechine.

Kabo e sa lekanang ea mocheso e hlahisa ho sotha ha lets'oao mme e potlakisa botsofali ba sesebelisoa. Ho tšepahala ha mocheso oa RF PCB ho itšetlehile ka ho boloka liprofaele tsa mocheso tse ts'oanang ho pholletsa le likarolo tse sebetsang le meaho ea mohala oa phetisetso. Ha libaka tse chesang tsa sebakeng seo li hlaha, li baka ho se tsitse ha impedance ho senyang tahlehelo ea ho kenngoa le litekanyo tsa tahlehelo ea ho khutla. Ho qhalana ha mocheso lipotolohong tsa microwave ho tlameha ho laoloa ka mokhoa o hlophisitsoeng ho boloka ts'ebetso ea motlakase le botšepehi ba mechini nakong ea potoloho ea bophelo ba sehlahisoa.

Mehloli ea Mocheso ea Bohlokoa ho RF le Microwave PCBs

Lisebelisoa tse sebetsang

Li-amplifiers tsa motlakase le li-module tsa ho fetisa li hlahisa mocheso o mongata nakong ea ts'ebetso, ka tahlehelo ea matla e fetolang matla a RF hore e be tlhahiso ea mocheso. Li-mixer le mekhahlelo ea ho fetolela khafetsa li kenya letsoho mofuteng o eketsehileng oa mocheso, haholo-holo meahong ea li-transceiver tsa mekhahlelo e mengata. Likarolo tsena tse sebetsang hangata li laola tekanyetso ea mocheso lits'ebetsong tsa RF.

Litahlehelo tsa Transmission Line le Substrate

Tahlehelo ea li-conductor ho mesaletsa ea koporo e nang le maqhubu a phahameng e hlahisa mocheso o lekanang le bongata ba hona joale le khanyetso ea trace. Tahlehelo ea dielectric ka thepa ea substrate e senya matla a eketsehileng ha masimo a motlakase a hokahana le sebopeho sa laminate. Litahlehelo tsena li bokellana ho pholletsa le lithapo tse telele tsa phetisetso 'me li fetoha bathusi ba bohlokoa maemong a ho felisa mocheso oa microwave PCB.

Liphello tsa Tikoloho le Pakete

Lithebe tsa tšepe le meaho ea lifofane tse fatše li theha libaka tsa mahloriso tsa mocheso oa lehae. Pakete ea ho hanyetsa mocheso e eketsa letoto la ho thibela mocheso litselaneng tsa phallo ea mocheso, ho fokotsa tsela eo mocheso o fetisang ka katleho ho tloha lefung ho ea ho tikoloho e potolohileng. Maemo a mocheso a kantle a boetse a hatella litsamaiso tsa taolo ea mocheso lits'ebetsong tse pepesehileng tikolohong e thata ea ts'ebetso.

Mehopolo ea Moqapi oa Mocheso bakeng sa RF le Microwave Boards

Khetho ea Lihlahisoa

Lisebelisoa tse nang le motlakase o phahameng ke tsa bohlokoa taolong ea mocheso oa RF. Lisebelisoa tse kang laminate e khethehileng ea tahlehelo e tlase ea 92ML, Taconic RF-35TC, le laminate e tletseng ceramic li qhala mocheso ka katleho ho feta FR4 ha li ntse li boloka thepa e tsitsitseng ea dielectric.

Li-laminates tse tšehelitsoeng ka tšepe li matlafatsa phetisetso ea mocheso ka ho fana ka litsela tse tobileng tsa ho tsamaisa mocheso. Kaha metsoako e tletseng ka ceramic e ka fana ka makhetlo a fetang a mahlano mocheso oa mocheso oa thepa e thehiloeng ho PTFE, khetho e nepahetseng ea thepa e bohlokoa bakeng sa meralo ea matla a phahameng.

Tsamaiso ea Stack-up le Koporo

Mekhahlelo ea koporo e teteaneng e ntlafatsa bokhoni ba hona joale le ho ata ha mocheso. Pokello e leka-lekaneng e fokotsa matla a ntoa 'me e nolofalletsa mocheso o ts'oanang ho tloha likarolong ho ea ho lifofane tse fatše. Lifofane tsa fatše tse entsoeng hantle tse nang le boima bo lekaneng ba koporo li sebetsa e le lisebelisoa tse sebetsang hantle tsa mocheso, li fokotsa libaka tse chesang tsa sebakeng seo ntle le ho senya ts'ebetso ea RF.

Tsela ea Mocheso le Ho hasana ha Mocheso

Methapo e fetisoang ka mocheso ka tlas'a likarolo tsa motlakase e etsa litsela tse sebetsang hantle tsa ho tsamaisa motlakase ho tloha ho li-pad ho ea ho lifofane tse ka hare tsa mobu. Li-vias tse tlatsitsoeng—tse sebelisang koporo kapa epoxy e tsamaisang mocheso—li fokotsa khanyetso ea mocheso le ho ntlafatsa phetiso ea mocheso. Ho ntlafatsa ka bophara, sebaka, le mokhoa oa ho tlatsa ho netefatsa phallo e sebetsang hantle ea mocheso le ho boloka ts'epo ea likarolo. Haeba stackup e amohetsoeng e totobatsa TC350, tlhahiso ea TC350 bakeng sa liboto tsa motlakase tsa RF e lokela ho hokahanya geometry ea motlakase le tsela e reriloeng ea phetiso ea mocheso.

Metal Core kapa Metal-backed PCBs

Li-PCB tsa RF tse thehiloeng ho aluminium kapa tse tšehelitsoeng ke tšepe li fana ka ho qhalana ha mocheso ho hoholo le ho tiea ha sebopeho, tse loketseng li-amplifiers le li-antenna lits'ebetsong tsa microwave tse matla haholo. Ka ho kopanya likarolo tsa RF ka kotloloho ho setsi sa tšepe, liboto tsena li nolofalletsa phetisetso e sebetsang ea mocheso ho chassis kapa li-heat sinks tsa kantle, li fokotsa li-interface tsa mocheso le ho ntlafatsa ts'epo.

Ketsiso le Tekanyo bakeng sa netefatso ea Thermal

Netefatso e sebetsang hantle ea mocheso e kopanya ho nepahala ha papiso le tekanyo ea lefats'e ea nnete ho netefatsa ts'ebetso e tšepahalang ea RF le microwave PCB. Lisebelisoa tse tsoetseng pele joalo ka ANSYS Icepak le FloTHERM li thusa ho bolela esale pele kabo ea mocheso pele ho tlhahiso ea mohlala, e lumellang tlhophiso ea pele ea moralo. Mekhoa ea Bohlokoa ea ho netefatsa Thermal:

• Tsela e khuts'oane ea mocheso - Phallo e tobileng ea mocheso ho tloha likarolong ho ea motheong oa tšepe e fokotsa mocheso oa matekoane.
• Lintlha tse nepahetseng tsa thepa - Ho sebelisa conductivity e nepahetseng ea mocheso le boleng ba ho senya matla ho ntlafatsa ho tšepahala ha papiso.
• E ntlafalitsoe ka moralo - E tsamaisoang ka ketsiso ka ho bea e ntlafatsa bokhoni ba ho fetisa mocheso o otlolohileng.
• Setšoantšo sa infrared thermal - E fana ka 'mapa oa mocheso oa leholimo oa nako ea nnete ho tseba libaka tse chesang tsa lehae.
• Li-sensor tsa mocheso tse kentsoeng - Etsa hore ho behoe leihlo ho tsoelang pele ha libaka tsa bohlokoa nakong ea liteko tsa ho tšepahala.
• Parallel RF le netefatso ea mocheso - Ts'ebetso ea mocheso le motlakase e tlameha ho netefatsoa ka nako e le 'ngoe ho netefatsa hore ho na le impedance e tsitsitseng le ho fumana litšobotsi.

Papiso e phethahetseng le liteko li netefatsa hore litharollo tsa mocheso li sebetsa joalo ka ha li reriloe tlas'a maemo a sebele a ts'ebetso ea RF, ho fokotsa ho sebetsa bocha le ho ntlafatsa ts'epo ea nako e telele.

Mekhoa ea Tlhahiso bakeng sa Phallo e Ntle ea Mocheso

Taolo ea ts'ebetso ea lamination e thibela ho bokellana ha resin ho eketsang khanyetso ea mocheso libakeng tsa marang-rang. Lipotoloho tse laoloang tsa khatello le mocheso li netefatsa phallo e felletseng ea resin ha e ntse e fokotsa sebopeho se se nang letho pakeng tsa likarolo tsa koporo le dielectric. Taolo ea ho futhumatsa ea RF PCB e fetela mohatong o mong le o mong oa ho etsa masela, ho tloha ho lokisoeng ha thepa ho fihlela kopanong ea ho qetela.

Thermal ka ho tlatsa e hloka lisebelisoa tse khethehileng le boiphihlelo ba ts'ebetso ho fihlela sephetho se ts'oanang. Sehokelo sa tšehetso ea tšepe se hloka ho lokisoa hantle le mekhoa ea tlamahano e bolokang lintlha tsa ts'ebetso ea mocheso le motlakase. Khetho ea ho qeta bokaholimo e ama phetisetso ea mocheso likhokahanong tsa likarolo, ka lipolanete tsa ENIG le ENEPIG tse fanang ka litheko tse fapaneng tsa mocheso le motlakase ha li bapisoa le likhakanyo tse thehiloeng ho silevera.

Malebela a Sebetsang a Moralo

Ho beha lisebelisoa tsa matla a phahameng haufi le lisinki tsa mocheso kapa li-vias tsa mocheso ho fokotsa ho hanyetsa mocheso litseleng tsa bohlokoa tsa mocheso. Lifofane tse kholo tsa fatše li fana ka ho hasana ha mocheso ho fokotsang litlhōrō tsa mocheso sebakeng sa heno ha ho ntse ho boloka botšepehi ba RF fatše. Ka lebaka la ho bala le ho beha maemo ho hloka ho leka-lekanya ts'ebetso ea mocheso khahlanong le litšenyehelo tsa tlhahiso le menahano ea botšepehi ba matšoao.

Lisebelisoa tse tlaase, tse phahameng tsa mocheso-conductivity li thusa ho ntlafatsa ka nako e le 'ngoe ho metrics ea ts'ebetso ea motlakase le ea mocheso. RF e kopaneng le netefatso ea papiso ea mocheso e tšoara litaba tsa moralo pele ho tlhahiso ea mohlala, e fokotsa nako ea potoloho ea nts'etsopele le litšenyehelo. Litlhahlobo tsa moralo li lokela ho lekola katleho ea taolo ea mocheso hammoho le litlhoko tsa tahlehelo ea ho kenella le ho kenya.

fihlela qeto e

Taolo e nepahetseng ea mocheso e bohlokoa ho boloka ts'ebetso ea RF, botsitso ba matšoao, le ts'epahalo ea nako e telele lipotolohong tse phahameng haholo le tsa microwave. Ho tloha ho khetho ea substrate ho ea ho sebopeho sa koporo le mehaho e tšehelitsoeng ka tšepe, khetho e 'ngoe le e' ngoe ea moralo e susumetsa ka ho toba phallo ea mocheso le katleho ea tsamaiso ka kakaretso. Ho kopanya tlhahlobo ea mocheso le liteko qalong ea ts'ebetso ea nts'etsopele ho thusa baenjiniere ho leka-lekanya ho nepahala ha motlakase le botšepehi ba mochine le mocheso.

Bokhoni ba Taolo ea Thermal ea Highleap Electronics:

• Lisebelisoa tse tsamaisang motlakase o phahameng – Tsebo ea ho sebetsana le laminate e khethehileng e nang le tahlehelo e tlase, Taconic, le li-laminate tse tletseng ceramic bakeng sa ho ntlafatsa ho qhala ha mocheso.

• Litharollo tsa PCB tse tšehelitsoeng ka tšepe le tsa motheo oa tšepe - Meaho e thehiloeng ho aluminium kapa koporo bakeng sa liboka tsa RF tse matla le tsa microwave.

• Ho nepahala ka boenjiniere - Li-vias tsa mocheso tse tlatsitsoeng le tse koahetsoeng ho fokotsa mocheso oa li-junction le ho ntlafatsa ts'epo.

• Moralo o laolwang oa lamination le ho bokellana ha lithupa - Tekanyo e ntlafalitsoeng ea koporo le mekhoa ea ho kopanya ho netefatsa ho ata ha mocheso ka mokhoa o ts'oanang le botsitso ba mechini.

• Tšehetso e kopaneng ea liteko - Tiisetso ea ho thibela mocheso ka hare, mocheso le ts'epo bakeng sa ts'ebetso e tsitsitseng ho pholletsa le lihlopha tsa tlhahiso.

Ho sebelisana 'moho le Highleap Electronics ho netefatsa hore meralo ea hau ea RF le microwave PCB e fihlella ts'ebetso e phahameng ea motlakase le ts'epo e tšepahalang ea mocheso. Bohlale ba rona ba boenjiniere le bokhoni bo tsoetseng pele ba tlhahiso li fana ka motheo o tiileng bakeng sa lits'ebetso tsa maqhubu a phahameng tsa moloko o latelang.