Koaxial kurasikirwa dambudziko

Coaxial tambo anoshandiswa zvakanyanya muindasitiri, uye kurasikirwa kwavo kwagara kuri kunetsekana.Iyo yakanyanya kukwirira frequency iyocoaxial line inoshandiswa, iyo yakakura kurasikirwa.Zvikonzero chaizvo zvinotevera.

Kutanga, iyo yakakwira kuwanda kwechiratidzo, iyo yakasimba iyo ganda maitiro.Kunyanya kukosheswa kutapurirana pane yesimbi pamusoro, zvidiki iyo yekufambisa-chikamu chikamu chikamu. Naizvozvo, iyo yakakura iyo impedance, iyo huru kurasikirwa. Kuti uderedze kurasikirwa, iyo RF tambo inoshandisa Precious simbi (yakakwira kuitisa, chaiyo yekugadzira maitiro, nezvimwewo).

Chechipiri, iyo coaxial mutsara kurasikirwa kwakakamurwa kuita dielectric kurasikirwa uye simbi conductor kurasikirwa.Iyo huru ndeye dielectric kurasikirwa. Kazhinji, iyo yakasarudzika dielectric inogara yakaderera uye dielectric kurasikirwa kona chinhu chidiki, kuitira kuti kuderedzwa kuve kushoma. Svikiro rinoda chimiro chisingachinjiki kuona yunifomu impedance. Iyo yakakwira iyo frequency, zvakanyanya kuomarara kuchengetedza kusagadzikana uye kuenderera impedance, uye iyo yekuratidzira kurasikirwa ichave yakakura.
1. Dielectric kurasikirwa: Kana iyo frequency yakakwira, iyo dielectric inogara iri basa rehuwandu nekuda kwekupararira kwepakati. Chikonzero chakakosha ndechekuti zvimedu zvakachaji zvinoshanduka zvakasiyana nechero magetsi. Iyo dielectric coefficient inoshanduka ne frequency inofanirwa kuve neinonyanya kukosha, asi nekuti iyo coaxial line insulation ndeye yakanyanya isiri-polar zvinhu, iyo dielectric coefficient kupararira kubva yakaderera frequency kusvika pakakwirira frequency haina kusimba zvakanyanya.
2. Kondakita kurasikirwa: Chaizvoizvo kutaura, kondakita kurasikirwa kunogona kunyatso kukamurwa kuita zvikamu zviviri: kupisa kurasikirwa uye magetsi emagetsi kuvuza kunokonzerwa nekusakwana kudzivirirwa. Chiyero chakafanana chekudzivirira chine akasiyana maitiro ekudzivirira pamagetsi emagetsi enzira dzakasiyana, uye zvinodzivirira pamhedzisiro yakakwira. Hazvina kunaka senge yakaderera frequency (chokwadika, ichi hachisi chikamu chikuru chekurasikirwa).
  Chetatu. Kudzika kweganda δ = 1 / Ï € fuσ; nzvimbo yemuchinjikwa-yekutenderera yazvino s = Ï € [(r + δ) ²-r²]; kutapurirana kuramba R = 1 / σs;
  Pakupedzisira. Iyo yakaonda uye yakareba iyo coaxial tambo, iyo yakakura kurasikirwa, uye iyo yakakwira iyo frequency frequency, iko kukuru kurasikirwa.
Izvo pamusoro apa kurasikirwa kweiyo coaxial tambo.Coaxial tambondicho chigadzirwa chikuru chekambani yedu. Kana iwe uine chero mibvunzo nezve coaxial tambo, ndapota inzwa wakasununguka kuti utaure nesu. Tevere, ini ndichagovana newe dzimwe nzira dzekuona mhando yeiyo coaxial mutsara:
1. Cherekedza kutenderera kwenzvimbo inodzivirira.
2. Tarisa kuenderana kwesisitimu yekuvhara yekodhi coaxial.
3. Tsvaga mambure akarukwa eakaaxial tambo.
4. Tarisa mhando yealuminium foil.
5. Tarisa kuomarara kwe sheath yekunze.
6. Cherekedza chimiro cheiyo coaxial mutsara muchiuno.