Likhokahanong tsa sejoale-joale, sepakapaka, lisebelisoa tsa elektroniki tsa ts'ireletso, le li-automation tsa indasteri, botsitso le ts'epahalo ea-ea phetisetso ea khafetsa e ama ts'ebetso ea sistimi ka kotloloho. Joalo ka mokhoa oa mantlha oa phetisetso o hokelang- lisebelisoa tsa khafetsa (joalo ka li-antenna, liamplifiers, le lisebelisoa tsa tlhahlobo), lithapo tsa RF li hloka ho nahanoa ka botlalo lintlha tse ngata, ho kenyeletsoa ho lumellana ha motlakase, tahlehelo ea ho kenya, matla a mochini, le ho ikamahanya le maemo tikolohong bakeng sa moralo oa tsona, khetho le phepelo ea tsona. Sengoliloeng sena, ho qala ka melao-motheo ea tekheniki le ho kopanya litlhoko tse tloaelehileng tsa maemo, se hlalosa ka tatellano moralo oa moralo le litloaelo tsa bohlokoa tsa boenjiniere bakeng sa tharollo ea likhoele tsa RF.
I. Litšobotsi tsa Bohlokoa tsa Tekniki le Mathata a Lithapo tsa RF
Mosebetsi oa bohlokoa oa lithapo tsa RF ke ho fetisa ka mokhoa-maqhubu a maqhubu a phahameng{0}}maqhubu a maqhubu a pharalletseng (hangata a nkang makholo a MHz ho isa ho mashome a GHz) ha a ntse a hatella ho lutla ha matla le tšitiso ea kantle. Litšobotsi tsa bona tsa tekheniki li ka akaretsoa ka matšoao a latelang a bohlokoa:
1. Tšobotsi Impedans Matching
Ts'ebetso ea litsamaiso tsa RF e itšetlehile haholo ka ho tsitsa ha impedance. Litšitiso tse tloaelehileng tse tloaelehileng li kenyelletsa 50Ω (e sebelisoang phetisong ea matla le litsamaiso tsa puisano) le 75Ω (e sebelisoang haholo bakeng sa matšoao a video/TV). Haeba ho na le ho se lumellane ha thapo pakeng tsa thapo le sebopeho sa sesebelisoa (mohlala, ho kheloha ho fetang ± 2Ω) ho etsahala, ponahatso ea lets'oao e tla hlaha, e bonts'a keketseho ea sekhahla sa maqhubu a emeng (VSWR), 'me se fokotsa ts'ebetso ea phetisetso mme se ka senya likarolo tse ka pele{7}}.
2. Ho Kena Tahlehelo Taolo
Ha mats'oao a phahameng-a fetisoa ka lithapo, maqhubu a maqhubu a phahameng a bola haholo ha a le hole ka lebaka la letlalo la conductor, tahlehelo ea dielectric polarization, le tahlehelo ea mahlaseli. Tahlehelo ea ho kenya (liyuniti: dB/m kapa dB/100ft) ke parameter ea bohlokoa bakeng sa ho lekanya katleho ea phetiso ea cable. -tahlehelo e tlase{4}e hloka lisebelisoa tse ntlafalitsoeng (joalo ka oksijene-copper kapa silver plating ea mahala), lisebelisoa tsa dielectric (joalo ka polytetrafluoroethylene (PTFE) kapa moea{6}}mehaho e tlatsitsoeng), le ho sireletsa botšepehi.
3. Tšireletso e sebetsang ka katleho le ho hanyetsa Tšitiso
Hangata lithapo tsa RF li sebetsa libakeng tse matla tsa motlakase (joalo ka tse haufi le liteishene tsa radar le liteishene tsa motheo). Lerata la kantle la motlakase (joalo ka mats'oao a khokahanyo ea mehala le ho tsoa ha motlakase) le ka hokelloa thapong, 'me mats'oao a kahare a ka hlahisa le ho sitisa lisebelisoa tse haufi. Tšireletseho e phahameng (hangata E kholo ho feta kapa e lekana le 80dB) e itšetlehile ka -thebe e lohiloeng ka lera (joalo ka koporo e entsoeng ka koporo + le aluminium foil composite) kapa semi{5}}moetso o thata oa coaxial, ha o ntse o netefatsa ts'ebetso ea ts'ebetso le ho theola fatše.
4. Ho Ikamahanya le Boemo ba Mechini le Tikoloho
Mosebetsing oa sebele, lithapo li ka 'na tsa tobana le maemo a kang a ho kobeha (mohlala, likhokahano tsa liroboto), ho thothomela (mohlala, lisebelisoa tsa enjene ea sefofane), mocheso o feteletseng (-55 degrees to +200℃), le corrosion ea lik'hemik'hale (mohlala, marine salt spray). Ka hona, thepa ea ka ntle ea sheath (mohlala,{12}}polyimide e hanyetsanang le mocheso o phahameng, polyurethane e sa tšoareng) le matla a sebopeho (mohlala, moralo oa lihlomo) li tlameha ho etsoa bakeng sa maemo a itseng.
II. Maano a Moralo oa Tharollo bakeng sa Maemo a Tloaelehileng
1. Lits'ebeletso tsa Motheo oa Lipuisano le Mekhoa ea Ts'ebetso ea Wireless
Sistimi ea fepelo ea li-antenna tsa setsi se hloka tahlehelo e tlase le ts'epahalo e phahameng bakeng sa likhoele tsa RF. Bakeng sa 5G high-frequency bands (joaloka millimeter wave at 28 GHz), lithapo tsa khale tsa semi-flexible (ka tahlehelo ea hoo e ka bang 0.5 dB/ft ho 28 GHz) ha li sa lekana{7}}ho tsamaisa sebaka se selelele. Ultra-tlase-tahlehelo ea semi{11}}lithapo tse thata (joalo ka air dielectric e nang le sebopeho sa spiral support, e ka fokotsang tahlehelo ho 0.15 dB/ft ho 28 GHz) kapa ho hlokahala tharollo ea hybrid waveguide. Ho feta moo, likhokahano tsa thapo (tse kang N-mofuta le SMA) li lokela ho sebelisa likhokahano tse entsoeng ka khauta{16}}ho fokotsa ho se khone ho kopana le metsi, 'me li-sealant tse sa keneleng metsi (joalo ka tse nang le litekanyetso tsa IP68) li lokela ho sebelisoa ho thibela ho se sebetse ha oxidation ka lebaka la ho kenella ha metsi a pula.
2. Aerospace le Tšireletso Electronics
Lifofaneng le lisathelaete, lithapo tsa RF li tlameha ka nako e le 'ngoe ho fihlela litlhoko tsa ho fokotsa boima ba 'mele (ho fokotsa boima ba 10%-20% ho ka ntlafatsa ts'ebetso ea mojaro oa moputso haholo), ho mamella maemo a feteletseng (joalo ka ho boloka ho feto-fetoha ha mocheso o ka tlase ho -60℃), le ho hanela tšitiso ea motlakase oa motlakase (EMP). Lithapo tse nyane-(bophara ba ka ntle Ka tlase ho kapa ho lekana 1.5mm, tse loketseng ho khannoa libakeng tse koalehileng) hangata lia sebelisoa. Polyetheretherketone (PEEK) dielectric e sebelisoa ho leka-lekanya dielectric constant le thethempherecha e tsitsitseng, 'me the shielding layer e habeli-layer silver-plated copper mesh + aluminium foil composite structure (ts'ebetso ea tšireletso E kholo ho feta kapa e lekana le 90dB). Ntle le moo, lisebelisoa tsohle li tlameha ho netefatsoa ho MIL-STD-202 (teko ea mocheso oa ho sisinyeha / mongobo) le MIL-STD-810 (tlhahlobo ea ho sisinyeha).
3. Litsamaiso tsa liteko tsa laboratori le tse nepahetseng
Teko e phahameng-e kang vector network analyzer (VNA) calibration) e hloka lithapo tse nang le botsitso bo tlase haholo le tse pheta-phetoang (hangata<0.05°/m @ 18GHz). Semi-flexible cables are preferred for their flexibility and low phase variation. They utilize a solid polyethylene (PE) dielectric (for stable dielectric constant) and a tightly braided shield (to minimize structural deformation during bending). Furthermore, specialized test-grade connectors (such as the 2.92mm series, which can withstand repeated insertion and removal without affecting VSWR) must be used in the test system, and regular calibration must be performed to compensate for loss drift introduced by cable aging.
III. Lintlha Tse ka Sehloohong Nakong ea Phethahatso ea Morero
1. Khetho le Melao-motheo e Bapisang
Khetho ea mofuta oa thapo e tlameha ho ipapisitsoe le mefuta ea maqhubu a matšoao (mohlala, DC-1 GHz, 1-18 GHz, kapa hodimo), matla a phetiso (mohlala, matshwao a tekolo a milliwatt-kilowatt-level ya matla a phetiso), le tikoloho ya cabling (ketane e tsitsitseng ya ka tlung kapa ketane ya ho hula ka ntle). -lithapo tse thata li loketse phetisetso e phahameng-ea matla a ho fetisa litsela tse tsitsitseng, lithapo tse feto-fetohang li loketse ho hokela lisebelisoa tse nang le litlhoko tsa ho kobeha tse itekanetseng, 'me lithapo tse tenyetsehang li ratoa bakeng sa ho tsamaea khafetsa (mohlala, basebelisi ba liroboto).
2. Litlhaloso tsa Tlhophiso
Karolo e kobehang ha ea lokela ho ba ka tlase ho boleng bo tlase ba thapo (hangata 5-ka makhetlo a 10 bophara ba kantle). Ho hloleha ho etsa joalo ho ka baka ho phatloha ha lera la dielectric kapa ho senyeha ha lera le sireletsang. Connector welding/crimping e lokela ho etsoa ke litsebi (mohlala, ho sebelisa sekontiri sa torque ho laola torque e tiisang) ho qoba likhokahano tse hlephileng kapa khatello e feteletseng e ka senyang li-conductors. Bakeng sa phetisetso ea nako e telele, ho kgothaletswa ho eketsa amplifier ea matšoao kapa ho lekana ka nako e tloaelehileng (mohlala, 10-15 metres) ho lefella tahlehelo.
3. Tlhokomelo le Tlhokomelo
Lekola khafetsa VSWR ea thapo (boleng bo reriloeng bo Tlase kapa bo lekana le 1.2:1), tahlehelo ea ho kenya (ho kheloha boleng ba pele Ka tlase kapa ho lekana le 10%), le ho tsoela pele ha thebe (ho hanyetsa Ka tlase kapa ho lekana le 5 mΩ/m). Bakeng sa litsamaiso tse mahlonoko, sebelisa li-module tsa ho shebella marang-rang (mohlala, ho sebelisa reflection coefficient ho hlahloba bophelo bo botle ba cable ka nako ea sebele) ho khutlisa ka potlako likarolo tsa botsofali kapa tse senyehileng ho thibela ho hlōleha ha tsamaiso.
Qetello
Moralo oa litharollo tsa lithapo tsa RF o hloka momahano e tebileng ea theory ea electromagnetic, mahlale a thepa, le boikoetliso ba boenjineri, ho loants'a li-impedance, taolo ea tahlehelo, le maano a ho thibela{0}}tšitiso ho latela litlhoko tse ikhethileng tsa maemo a fapaneng. Ka nts'etsopele e potlakileng ea likhokahano tsa 5G/6G, marang-rang a sathelaete, le thekenoloji ea leseli la quantum, lithapo tsa RF li tla fetohela ho ultra-wideband (e koahelang 0.1-100 GHz), ultra{9}}tahlehelo e tlase (tahlehelo <0.01 dB/m @ 30 GHz) le intelligensite -bokhoni ba ho itlhahloba), ho fana ka tšehetso e tšepahalang haholoanyane bakeng sa phetisetso ea maqhubu a holimo.