Coaxial RF connectors yɛ RF nkrasɛm a ɛho hia wɔ microwave afuw mu na wɔde di dwuma kɛse wɔ microwave mfiri/afã ahorow, microwave nkitahodi mfiri, nnwinnade ne radar nhyehyɛe mu.
RF coaxial connector types: Ɛnam sɛ wireless communications ne radar technology anya nkɔso ntɛmntɛm wɔ nnansa yi mfe mu nti, system transmission range a ɛkɔ soro no hwehwɛ sɛ system transmission ahoɔden kɔ soro. Sɛ́ microwave nhyehyɛe no nyinaa fã no, ɛsɛ sɛ RF coaxial nkitahodi ahorow no tumi gyina tumi a ɛkorɔn-tumi a wɔde mena ahwehwɛde ano. RF mfiridwumayɛfoɔ nso taa yɛ tumi a ɛkorɔn-sɔhwɛ ne susudua, na microwave mfiri ahodoɔ ne nneɛma a wɔde yɛ sɔhwɛ nso hwehwɛ tumi a ɛkorɔn-tumi. Eyi ma ahwehwɛde a ɛkɔ soro kɛse ba tumi a RF coaxial connectors, a ɛyɛ ade titiriw a ɛkyerɛ RF coaxial connector su. Enti, dodow ahe na wunim fa tumi a RF coaxial connectors wɔ ho? Tumi a RF coaxial connectors tumi yɛ no yɛ asɛm a ɛyɛ den, a nneɛma pii nya so nkɛntɛnso, a ebinom ne wɔn ho wɔn ho di nkitaho. Saa nneɛma yi titiriw ne connector kɛse (a pinhole kɛse ka ho), adwumayɛ frequency, nipadua nneɛma, insulation nneɛma, contact ahotoso, contact resistance, voltage standing wave ratio (VSWR), ambient temperature, ne altitude. Mfonini a ɛwɔ aseɛ ha yi kyerɛ Megaphase ahoɔden tumi botaeɛ a wɔkamfo kyerɛ ma RF nkitahodiɛ ahodoɔ wɔ frequency ahodoɔ so. Sɛ woreyɛ RF nneɛma ho nhyehyɛe a, wubetumi apaw nkitahodi a ɛfata a egyina afiri no adwumayɛ mpɛn dodow ne tumi a wɔde di dwuma so.
Afei, yɛde nkyerɛkyerɛmu a ɛkɔ akyiri bɛma wɔ nneɛma a ɛka tumi a RF coaxial connectors wɔ no ho. Wɔ RF nsɛnkyerɛnne a ɛwɔ frequency koro no ara ho no, nkitahodi akɛse wɔ tumi a wɔde di dwuma kɛse. Sɛ nhwɛso no, connector pinhole kɛse ne connector no mprempren tumi wɔ abusuabɔ, a ɛne tumi wɔ abusuabɔ tẽẽ. Wɔ RF coaxial nkitahodi ahorow a wɔtaa de di dwuma mu no, 7/16 (DIN), 4.3-10, ne N{8}}type nkitahodi ahorow no yɛ akɛse kakra, a ɛne pinhole akɛse hyia. Mpɛn pii no, tumi a N-type nkitahodi tumi di ho dwuma no bɛyɛ sɛ SMA de no mmɔho abiɛsa kosi anan. Saa N-type connectors a agye din kɛse yi kyerɛkyerɛ nea enti a passive components dodow no ara a wɔtɔn wɔ gua so, te sɛ attenuators ne loads a ahoɔden dodow boro 200W, de N-type connectors di dwuma. RFbuy (www.rfbuy.com) ma kwan a ɛyɛ mmerɛw sɛ wobɛfa tumi adesoa a ɛkorɔn, attenuators, ne microwave afã afoforo a ɛnyɛ adwuma so. Tumi a wɔde di dwuma wɔ RF coaxial connectors mu no so tew bere a sɛnkyerɛnne frequency kɔ soro no. Nsakrae a ɛba wɔ nsɛnkyerɛnne frequency a wɔde mena mu no nya nkrasɛm a wɔhwere ne voltage standing wave ratio (VSWR) so nkɛntɛnso tẽẽ, na ɛno nso nya tumi a wɔde mena no so nkɛntɛnso. Bio nso, honam ani nkɛntɛnso nso betumi aba. Sɛ nhwɛsoɔ no, SMA nkitahodifoɔ a wɔtaa de di dwuma no wɔ tumi a wɔde di dwuma bɛyɛ 500W wɔ 2GHz, nanso sɛ wɔkyekyɛ mu a, tumi a wɔde di dwuma no nnu 100W wɔ 18GHz. Sɛnea RFbuy RF Mall (www.rfbuy.com) kyerɛ no, passive components dodow no ara, te sɛ attenuators ne loads, a ɛyɛ adwuma wɔ frequency a ɛboro 18 GHz so no wɔ ahoɔden dodow a ennu 100 W. Wɔ milimita asorɔkye frequencies ho no, 1.85mm 67 GHz fixed attenuator wɔ ahoɔden dodow a ennu 10 W, ne a 1.85mm 67 GHz adesoa wɔ an average power rating of less than 22 W. Attenuators ne loads a ɛyɛ 2.92mm a wɔpaw no kɛse wɔ hɔ, a sɛ wɔkyekyem pɛpɛɛpɛ a, ahoɔden dodow a ɛkɔ soro kodu 100 W. Wɔayɛ RF nkitahodi ahorow no a anyinam ahoɔden tenten a wɔakyerɛ. Wɔ finite-length line mu no, sɛ su impedance ne load impedance nyɛ pɛ a, voltage ne current a efi adesoa no mu no fã bi san da adi kɔ power supply no mu. Wɔfrɛ saa asorɔkye yi asorɔkye a ɛdannan, bere a wɔfrɛ ahoɔden ne ahoɔden a efi tumi a wɔde ma no mu kɔ adesoa no mu no asorɔkye a ɛba. Wɔfrɛ asorɔkye a esii ne asorɔkye a ɛdannan no a wɔaka abom no asorɔkye a egyina hɔ. Wɔfrɛ asorɔkye a egyina hɔ no ahoɔden a ɛsen biara ne nea ɛba fam koraa no nsusuwii sɛ ahoɔden a egyina hɔ asorɔkye nsusuwii (a wɔsan frɛ no gyinabea asorɔkye nsusuwii). Asorɔkye a ɛdannan no gye channel tumi, na ɛtew transmission tumi so. Insertion loss (IL) kyerɛ tumi a ɛyera wɔ line no mu a ɛnam RF connector a wɔde aba no so ba. Wɔkyerɛ ase sɛ tumi a efi mu ba ne tumi a ɛba mu no nsusuwii. Nneɛma pii boa ma connector insertion loss, a nea ɛka ho ne su impedance mismatch, assembly precision mfomso, mating end-face clearance, axis tilt, lateral offset, eccentricity, machining pɛpɛɛpɛ, ne plating. Adehwere ma nsonsonoe ba input ne output power ntam, na ɛno nso ka tumi a wɔde di dwuma. Mframa nhyɛso a ɛsakra wɔ beae a ɛkorɔn no ma nsakrae ba mframa afã horow no dielectric constant mu, na wɔ nhyɛso a ɛba fam mu no, mframa tumi yɛ ionization kɛse, na ɛma corona ba. Dodow a beae a ɛkorɔn no kɔ soro na mframa no nhyɛso ba fam no, dodow no ara na tumi a wɔde di dwuma no so tew. Contact resistance: Contact resistance a ɛwɔ RF connector mu no kyerɛ resistance a ɛwɔ contact point a ɛda inner ne outer conductors ntam bere a connector no abɔ mu. Wɔtaa susuw no miliohms mu na ɛsɛ sɛ wɔma ɛba fam sɛnea ɛbɛyɛ yiye biara. Ɛhwehwɛ mfiridwuma mu su a ɛwɔ nkitahodi ahorow no mu titiriw, na ɛsɛ sɛ woyi nsunsuanso a efi bulk resistance ne solder joint resistance mu ba no fi hɔ bere a wɔresusuw no. Nkitahodi a ɛko tia no ma ɔhyew ba wɔ nkitahodi ahorow no so, na ɛma ɛyɛ den sɛ wɔde microwave nsɛnkyerɛnne a ahoɔden kɛse wom bɛkɔ. Nneɛma a wɔde yɛ nkitahodi: Tumi a nkitahodi koro no ara tumi di ho dwuma no betumi ayɛ soronko a egyina nneɛma a wɔde di dwuma no so.