Bayani Na Tsarin Samun Kari Na Signal a Cikin Coaxial Cable

Yiƙitiɗɗo na alamuwa na RF a kabilon coaxial yana tsakanin 70% zuwa 90% na yiƙitiɗɗon ruwa, wanda ya dace da tsarin dielectric na kabilon coaxial da abubuwan geometry na kabilo. Wannan labarin zai kawo takaitaccen tallafi game da yiƙitiɗɗon alamun RF.

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1,Yiƙitiɗɗo na alamuwa na RF a kabilon coaxial

Kwayar Coaxial shine kwayar da a yayi amfani da ita wajen bakaɗawa da signalar RF, tana ɗan ƙwayar tsakiya, layer na insulation, ƙwayar bên, da layer na bên. A cikin su, ƙwayar tsakiya da ƙwayar bên suna nuna maɓallin positive da negative na signal, layer na insulation ana amfani dashi wajen rage sautin electric, kuma layer na bên ana amfani dashi wajen daina juzu'in gaban ƙasa. A cikin kwayoyin coaxial, signalaro na radio frequency an bakaɗawa su ta hanyar sauyin elektromagnetic bayan ƙwayoyi da layers na insulation.

Sauyar bakaɗawa na signalaro na RF a cikin kwayoyin coaxial ya dacewa ne akan constant na dielectric na kwayar coaxial da abubuwan da ke yankin kwayar. Har ila yon, sauyar bakaɗawa na signalaro na RF a cikin kwayoyin coaxial zai kasance game da 70% zuwa 90% na sauyin light.

A cikin su, yawa ne kama zuwa mai tsauri da ke da wani kyakkyawan girma, shin ya kasance mai zurfi girman RF. Wannan shine saboda yawa ne kama zuwa mai tsauri, shin ya kasance mai zurfi girman alamun elektromagnetic a cikin layer na insulation; Kasa ne girman cable, shinzar daidai ne girman alamu da lokaci na alamu.

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2,Yaya za a iya lissafin lokacin haɓaka da girman alamun RF a cikin kwalon coaxial

A cikin tsarin sahuttu, dole ne a lissafi lokacin transmission basu kan girman da lokacin alamun transmission don kare tsarin da performance. A cikin kwalon coaxial, zai samu wannan formula don lissafin lokacin da girman alamun RF:

Lokacin transmission = Girman transmission / Sakon haɓaka

Girman transmission = Sakon haɓaka × Lokacin transmission

A cikin su, waniyata na kusanci, lokacin sauya, da dakin sauya suna m/s, s  da m, wasuwa. Misali, yayin da shakarar dielectric na kwayar coaxial ita ce 2.3, yawan kusansa yana dauwai 2.07x10 ^ 8 m/s. Idan signal yana bukatar sauƙi daga sararin aika zuwa sararin karɓa, da kuma dakin sauya shine 500 mita, lokacin sauya yana dauwai 2.41 microsecond (lokin sauya=500/2.07x10 ^ 8), da kuma dakin sauya shine 1000 mita, lokacin sauya yana dauwai 4.82 microsecond.

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3, Yaya za a iya inganta yawan sauya na kwayoyin coaxial

A alamar ayyuka, don inganta yawan sauya na kwayoyin coaxial, zan addine waɗannan hanyoyin:

1. Zaɓi kwayar coaxial da aka hankali: Zaɓi kwayoyin coaxial da suka da dielectric mai yawa da girman keɓance-keɓance mai ƙaranci bisa buƙatar communication.

2. Nemo tsarin haɗin kwayoyin: Amfani da kwayoyin mai zurfi mai zurfi da tsarin haɗi da yawa zai samun nisaƙin bayanin sigin na kyau kuma zai sa hannu kan dare waɗannan sigina.

3. Nemo juyawar wuri na kwayo: Lokacin da kuke shigar da kwayoyin coaxial, kungawa don waya daga cikin masallaci na kayan aiki ko masallaci na elektromagnetic domin kare da kwayoyin su, don tabbatar da cimma da siginan da ke yanke