편집토론기록

동축 케이블

Otstn1010 (토론 | 기여)님의 2019년 10월 25일 (금) 20:32 판
Coaxial cable cutaway.svg

同軸 케이블 / coaxial cable

개요

구리선을 축으로 하여 절연체가 둘러싸고, 그것을 도체망으로 만든 차폐층(접지를 겸한다)이 둘러싸고 있는 케이블. 재질 때문에 한자로 구리 銅 자를 쓰고 있다고 생각하겠지만, 같은 축(coaxial)을 의미하는 同(한 가지 동)자를 쓴다.

주로 안테나 연결을 위해 쓰이며 TV 안테나를 대체하는 유선방송에도 동축 케이블이 쓰이고 있다. 또한 데이터 전송용으로도 손색이 없는 데, 차폐가 훌륭하여 신호 손실이 거의 없기 때문에 양방향 수 Gbps는 가볍게 뽑아낼 수 있다. 광 케이블이 등장하기 전까지는 해저 케이블을 포함한 주요 백본망이 동축 케이블로 구성되었다. 다만 WAN 말단에 쓰이는 동축 케이블망(케이블 인터넷)은 TV가 쓰고 남은 대역을 쓰기 때문에 사용자들이 품질에 대한 불만이 많다.비 오면 인터넷이 안 된다던가

여담으로 대한민국의 주요 동축 케이블망 사업자는 LG U+다. 3사 퓨전 이전의 LG 파워콤이 한전 자회사 시절에 전국 곳곳에 동축 케이블망을 깔아둔 전봇대의 강자라서 가능한 일. 최대의 고객은 SK 브로드밴드

규격

유형 임피던스
(ohms) 		내부 도체 (mm) 유전체 외경 쉴드 비고 최대 감쇠율, 750 MHz
(dB/100 ft)
Type (VF) (in) (mm) (in) (mm)
RG-6/U 75 1.024 PF 0.75 0.185 4.7 0.270 6.86 Double Low loss at high frequency for cable television, satellite television and cable modems 5.650
RG-6/UQ 75 1.024 PF 0.75 0.185 4.7 0.298 7.57 Quad This is "quad shield RG-6". It has four layers of shielding; regular RG-6 has only one or two 5.650[1]
RG-7 75 1.30 PF 0.225 5.72 0.320 8.13 Double Low loss at high frequency for cable television, satellite television and cable modems 4.570
RG-8/U 50 2.17 PE 0.285 7.2 0.405 10.3 Amateur radio; Thicknet (10BASE5) is similar 5.967[2]
RG-8X 50 1.0 PF 0.75 0.185 4.7 0.242 6.1 Double A thinner version, with the electrical characteristics of RG-8U in a diameter similar to RG-6.[3] 10.946[2]
RG-9/U 51 PE 0.420 10.7
RG-11/U 75 1.63 PE 0.66-.85 0.285 7.2 0.412 10.5 Dual/triple/quad Low loss at high frequency for cable and satellite television. Used for long drops and underground conduit, similar to RG7 but generally lower loss.[4][5] 3.650
RG-56/U 48 1.4859 0.308 7.82 Dual braid shielded Rated to 8000 volts, rubber dielectric
RG-58/U 50 0.81 PE 0.66 0.116 2.9 0.195 5.0 Single Used for radiocommunication and amateur radio, thin Ethernet (10BASE2) and NIM electronics, Loss 1.056 dB/m @ 2.4 GHz. Common.[6] 13.104[2]
RG-59/U 75 0.64 PE 0.66 0.146 3.7 0.242 6.1 Single Used to carry baseband video in closed-circuit television, previously used for cable television. In general, it has poor shielding but will carry an HQ HD signal or video over short distances.[7] 9.708[2]
RG-59A/U 75 0.762 PF 0.78 0.146 3.7 0.242 6.1 Single Similar physical characteristics as RG-59 and RG-59/U, but with a higher velocity factor. 8.9@700 MHz 8.900[8]
3C-2V 75 0.50 PE 0.85 3.0 5.4 Single Used to carry television, video observation systems, and other. PVC jacket.
5C-2V 75 0.80 PE 0.82±0.02 0.181 4.6 0.256 6.5 Double Used for interior lines for monitoring system, CCTV feeder lines, wiring between the camera and control unit and video signal transmission. PVC jacket.
RG-60/U 50 1.024 PE 0.425 10.8 Single Used for high-definition cable TV and high-speed cable Internet.
RG-62/U 92 PF 0.84 0.242 6.1 Single Used for ARCNET and automotive radio antennas.[9]
RG-62A 93 ASP 0.242 6.1 Single Used for NIM electronics
RG-63 125 1.2 PE 0.405 10.29 Double braid Used for aerospace 4.6
RG-142/U 50 0.94 PTFE 0.116 2.95 0.195 4.95 Double braid Used for test equipment 9.600
RG-174/U 50 7x0.16 PE 0.66 0.059 1.5 0.100 2.55 Single Common for Wi-Fi pigtails: more flexible but higher loss than RG58; used with LEMO 00 connectors in NIM electronics. 23.565[2]
RG-178/U 50 7×0.1 PTFE 0.69 0.033 0.84 0.071 1.8 Single Used for high-frequency signal transmission. 42.7 @ 900 MHz,[10] Core material: Ag-plated Cu-clad Steel 42.700[11]
RG-179/U 75 7×0.1 PTFE 0.67 0.063 1.6 0.098 2.5 Single VGA RGBHV,[12] Core material: Ag-plated Cu
RG-180B/U 95 0.31 PTFE 0.102 2.59 0.145 3.68 Single silver-covered copper VGA RGBHV, Core material: Ag-plated Cu-clad steel
RG-188A/U 50 7×0.16 PTFE 0.70 0.06 1.52 0.1 2.54 Single 26.2 @ 1000 MHz, Core material: Ag-plated Cu-clad steel 26.200[13]
RG-195 95 0.305 PTFE 0.102 2.59 0.145 3.68 Single PTFE jacket suitable for direct burial, Core material: Ag-plated Cu-clad steel [14]
RG-213/U 50 7×0.75 PE 0.66 0.285 7.2 0.405 10.3 Single For radiocommunication and amateur radio, EMC test antenna cables. Typically lower loss than RG58. Common.[15] 5.967[2]
RG-214/U 50 7×0.75 PE 0.66 0.285 7.2 0.425 10.8 Double Used for high-frequency signal transmission.[16] 6.702[2]
RG-218 50 4.963 PE 0.66 0.660 (0.680?) 16.76 (17.27?) 0.870 22 Single Large diameter, not very flexible, low-loss (2.5 dB/100 ft @ 400 MHz), 11 kV dielectric withstand. 2.834[2]
RG-223/U 50 0.88 PE 0.66 0.0815 2.07 0.212 5.4 Double Silver-plated shields. Sample RG-223 Datasheet 11.461[2]
RG-316/U 50 7×0.17 PTFE 0.695 0.060 1.5 0.098 2.6 Single Used with LEMO 00 connectors in NIM electronics[17] 22.452[2]
RG-400/U 50 19x0.20 PTFE 2.95 4.95 Double [18] 12.566[2]
RG-402/U 50 0.93 PTFE 3.0 0.141 3.58 Single silver-plated copper Semi-rigid, 0.91 dB/m@5 GHz 27.700
RG-405/U 50 0.51 PTFE 1.68 0.0865 2.20 Single silver-plated copper-clad steel Semi-rigid, 1.51 dB/m@5 GHz 46.000
H155 50 19 × 0.28 PF 0.79 0.0984 2.5 0.2126 5.4 Double Lower loss at high frequency for radiocommunication and amateur radio
H500 50 2.5 PF 0.81 0.1772 4.5 0.386 9.8 Double Low loss at high frequency for radiocommunication and amateur radio, 4.45 @ 1000 MHz 4.450[19]
LMR-100 50 0.46 PE 0.66 0.0417 1.06 0.110 2.79 Double Low loss communications, 1.36 dB/meter @ 2.4 GHz 20.7[2]
LMR-195 50 0.94 PF 0.80 0.073 1.85 0.195 4.95 Double Low loss communications, 0.620 dB/meter @ 2.4 GHz 10.1[2]
LMR-200
HDF-200
CFD-200 		50 1.12 PF 0.83 0.116 2.95 0.195 4.95 Double Low-loss communications, 0.554 dB/meter @ 2.4 GHz 9.0[2]
LMR-240
EMR-240 		50 1.42 PF 0.84 0.150 3.81 0.240 6.1 Double Amateur radio, low-loss replacement for RG-8X[20] 6.9[2]
LMR-300 50 1.78 PF 0.82 0.190 4.83 0.300 7.62 Foil, Braid Low-loss communications 5.5[2]
LMR-400
HDF-400
CFD-400
EMR-400 		50 2.74 PF 0.85 0.285 7.24 0.405 10.29 Double Low-loss communications, 0.223 dB/meter @ 2.4 GHz,[21] Core material: Cu-clad Al 3.5[2]
LMR-500 50 3.61 PF 0.86 0.370 9.4 0.500 12.7 Double Low-loss communications, Core material: Cu-clad Al 2.8[2]
LMR-600 50 4.47 PF 0.87 0.455 11.56 0.590 14.99 Double Low-loss communications, 0.144 dB/meter @ 2.4 GHz, Core material: Cu-clad Al 2.3[2]
LMR-900 50 6.65 PF 0.87 0.680 17.27 0.870 22.10 Double Low-loss communications, 0.098 dB/meter @ 2.4 GHz, Core material: BC tube 1.5[2]
LMR-1200 50 8.86 PF 0.88 0.920 23.37 1.200 30.48 Double Low-loss communications, 0.075 dB/meter @ 2.4 GHz, Core material: BC tube 1.3[2]
LMR-1700 50 13.39 PF 0.89 1.350 34.29 1.670 42.42 Double Low-loss communications, 0.056 dB/meter @ 2.4 GHz, Core material: BC tube 0.8[2]
QR-320 75 1.80 PF 0.395 10.03 Single Low-loss line, which replaced RG-11 in most applications 3.340
QR-540 75 3.15 PF 0.610 15.49 Single Low-loss hard line 1.850
QR-715 75 4.22 PF 0.785 19.94 Single Low-loss hard line 1.490
QR-860 75 5.16 PF 0.960 24.38 Single Low-loss hard line 1.240
QR-1125 75 6.68 PF 1.225 31.12 Single Low-loss hard line 1.010

영문 위키백과 Coaxial cable,19 October 2019‎

안테나의 종류
지향성 안테나
무지향성 안테나
기타
  1. ↑ 틀:Cite web
  2. ↑ 2.00 2.01 2.02 2.03 2.04 2.05 2.06 2.07 2.08 2.09 2.10 2.11 2.12 2.13 2.14 2.15 2.16 2.17 2.18 2.19 2.20 2.21 틀:Cite web
  3. ↑ http://www.dxengineering.com/pdf/Belden%20RG8X%20Date%209258.pdf
  4. ↑ 틀:Cite web
  5. ↑ 틀:Cite web
  6. ↑ 틀:Cite web
  7. ↑ 틀:Cite web
  8. ↑ 틀:Cite web
  9. ↑ 틀:Cite web
  10. ↑ 틀:Cite web
  11. ↑ Caledonian.com - RG178 Mini-Coax
  12. ↑ 틀:Cite web
  13. ↑ [1]
  14. ↑ 틀:Cite web
  15. ↑ 틀:Cite web
  16. ↑ 틀:Cite web
  17. ↑ 틀:Cite web
  18. ↑ 틀:Cite web
  19. ↑ [2]
  20. ↑ 틀:Cite web
  21. ↑ 틀:Cite web