RF Coaxial Cable

1
RF Coaxial Cable

• MIL-C-17
• RG-178/179/316

2

• RF Coaxial Cable ??????
• ??????????
• ???????
• RG?
• Military Specification MIL-C-17
• ???????????????????
• LTK????
• RG-178, RG-179, RG-316
• ????????

3
??????????RG-178
?? ?? Madison Huber Suhner Harbour Beldon MIL-C-17
?? SPC 7/0.1 SPCCS 7/0.1 SPCCS 7/0.1 SPCCS 7/0.1 SPCCS 7/0.1
?? FEP 0.83 PTFE 0.83 PTFE 0.838 TFE 0.838 TFE 0.838
?? ???? 0.1x96 ???? 95 ???? 0.1x95.9 ???? 96 ???? 0.1x95.9
?? FEP 1.80 FEP 1.80 FEP 1.80 FEP 1.80 FEP 1.80
4
??????????RG-179
?? ?? Madison Huber Suhner Harbour Beldon MIL-C-17
?? SPC 7/0.1 SPCCS 7/0.1 SPCCS 7/0.1 SPCCS 7/0.1 SPCCS 7/0.1
?? FEP 1.6 PTFE 1.55 PTFE 1.6 TFE 1.57 PTFE 1.6
?? ???? 0.1 ???? 93 ?????? 0.1x93 x94 ???? 95 ???? 0.1x92.3
?? FEP 2.49 FEP 2.54 FEP 2.84 FEP 2.54 FEP 2.54
5
??????????RG-316
?? ?? Times-microwave Huber Suhner Harbour Beldon MIL-C-17
?? SPCCS 7/0.17 SPCCS 7/0.18 SPCCS 7/0.17 SPCCS 7/0.17 SPCCS 7/0.17
?? PTFE 1.52 PTFE 1.55 PTFE 1.52 TFE 1.47 PTFE 1.52
?? ???? 0.1 ???? 96 ?? ?? ???? 96 ???? 0.1x95.2
?? FEP 2.49 FEP 2.5 FEP 2.49 FEP 2.5 FEP 2.49
6
??????????RG-178
?? ?? Harbour Times- microwave Beldon Huber Suhner MIL-C-17
?? ?? Harbour Times- microwave Beldon Huber Suhner MIL-C-17
????ohm ????ohm 50/-2 50/-2 50(nom.) 50/-2 50/-2
???? ???? 70 69.5 69.5 69 69.5
?? MHz dB/m dB/m dB/m dB/m dB/m
?? 50 / 0.318 0.344 0.326 0.38
?? 100 0.426 0.452 0.459 0.468 0.525
?? 200 / 0.641 0.623 0.676 0.756
?? 400 0.892 0.911 0.918 0.982 1.082
?? 700 / 1.212 1.214 1.339 1.442
?? 900 / 1.387 1.394 1.542 1.641
?? 1000 1.449 1.456 1.509 1.638 1.705
?? 1800 / 1.970 2.076 / 2.345
?? 3000 / 2.570 / / 3.082
7
??????????RG-178
8
??????????RG-179
?? ?? Harbour Beldon Huber Suhner MIL-C-17
?? ?? Harbour Beldon Huber Suhner MIL-C-17
????ohm ????ohm 75/-3 75(nom.) 75/-3 75/-3
???? ???? 70 69.5 69 69.5
?? MHz dB/m dB/m dB/m dB/m
?? 50 / 0.279 0.188 /
?? 100 0.262 0.328 0.268 /
?? 200 / 0.410 0.385 /
?? 400 0.508 0.525 0.556 0.689
?? 700 / 0.646 0.753 /
?? 900 / 0.731 0.864 /
?? 1000 0.875 0.787 0.916 /
9
??????????RG-179
10
??????????RG-316
?? ?? Huber Suhner Harbour Times- microwave Beldon MIL-C-17
?? ?? Huber Suhner Harbour Times- microwave Beldon MIL-C-17
????ohm ????ohm 50/-2 50/-2 50/-2 50(nom.) 50/-2
???? ???? 69 69.5 69.5 69.5 69.5
?? MHz dB/m dB/m dB/m dB/m dB/m
?? 50 0.176 / 0.184 0.184 0.246
?? 100 0.251 0.249 0.262 0.272 0.361
?? 200 0.361 / 0.373 0.394 0.493
?? 400 0.521 0.524 0.531 0.574 0.689
?? 700 0.704 / 0710 0.777 0.913
?? 900 0.808 / 0.810 0.895 1.033
?? 1000 0.856 0.859 0.856 0.951 1.246
?? 2000 / / 1.223 / 1.530
?? 3000 / / 1.531 1.758 1.902
11
??????????RG-316
12
LTK????
Teflon
?????
?????
Teflon
13
LTK??????
?? RG-178 RG-179 RG-316
?? RG-178 RG-179 RG-316
?? SPCCS 7/0.1 SPCCS 7/0.1 SPCCS 7/0.17
?? Teflon FEP FEP
?? ???? ???? ????
?? FEP 1.80 FEP 2.54 FEP 2.44
14
RF???????

• ?????
• TDR Tek 11801C
• NA HP 8753ES
• ?????
• Beldon 50ohm 75ohm Coaxial Testing
• ?????
• Impedance
• Delay(VP)

• Attenuation
• RL(VSWR)

15
LTK????????RG-178
MHz ??(dB/m) RL (dB) ?? (ohm) ?? (ns/m)
50 0.3178 32.66 TDR 51.83 /
100 0.4278 36.59 TDR 51.83 4.53
200 0.6199 36.28 TDR 51.83 4.50
400 0.9026 33.36 TDR 51.83 4.50
700 1.2268 30.48 TDR 51.83 VP 66.5
900 1.4078 32.72 TDR 51.83 VP 66.5
1000 1.4919 33.14 TDR 51.83 VP 66.5
1800 2.0804 31.92 TDR 51.83 VP 66.5
3000 2.7847 26.79 TDR 51.83 VP 66.5
16
RG-178????
17
RG-178 ????????
18
LTK????????RG-179
MHz ??(dB/m) RL (dB) ?? (ohm) ?? (ns/m)
50 0.187 35.85 TDR 72.1-77.5 4.70
100 0.251 35.00 TDR 72.1-77.5 4.70
200 0.366 38.31 TDR 72.1-77.5 4.69
400 0.539 33.83 TDR 72.1-77.5 VP 64
600 0.609 37.00 TDR 72.1-77.5 VP 64
700 0.733 28.75 TDR 72.1-77.5 VP 64
800 0.789 32.86 TDR 72.1-77.5 VP 64
900 0.839 42.37 TDR 72.1-77.5 VP 64
1000 0.888 36.09 TDR 72.1-77.5 VP 64
19
RG-179????
20
RG-179 ????????
21
LTK????????RG-316
MHz ??(dB/m) RL (dB) ?? (ohm) ?? (ns/m)
50 0.171 33.52 TDR 49.2-53.2 4.68
100 0.260 30.67 TDR 49.2-53.2 4.69
200 0.382 37.76 TDR 49.2-53.2 4.69
400 0.553 31.94 TDR 49.2-53.2 VP 64
700 0.754 30.73 TDR 49.2-53.2 VP 64
900 0.865 28.87 TDR 49.2-53.2 VP 64
1000 0.921 40.67 TDR 49.2-53.2 VP 64
2000 1.358 35.39 TDR 49.2-53.2 VP 64
3000 1.725 20.91 TDR 49.2-53.2 VP 64
22
RG-316????
23
RG-316 ????????
24
????-????
Teflon
?????
????
Teflon
25
????
?? RG-178 RG-179 RG-316
?? RG-178 RG-179 RG-316
?? SPC 7/0.1 ??? ???
?? PFA ??? ???
?? ???? ??? ???
?? FEP 1.80 ??? ???
26
RG-178????
27
????-????
Teflon
??1???
?????
Teflon
??2???
???? ????
28
????
?? RG-179 RG-316
?? RG-179 RG-316
?? SPCCS 7/0.1 SPCCS 7/0.17
?? FEP FEP
?? ?????? ??????
?? FEP 2.90 FEP 2.90
29
Thank you !
30
????????

• ????
• ????????????????????,??????????,????????????????
  ??????????????????????????/????,??????????????????
  ???,???O ?

31
????????

• ??
• ?????????????????????.??????????????????????????
  ??????????????????????????????????dB/m
  ? ???????????????????????????????????????

32
????????

• ????(????)
• ??????????????(??????????????????????)
  ??????????????????????????????????????????????????
  ??????????????????????????????????????????????????
  ??????????????????????????????????????????????????
  ????????????????????

33
????????

• ??/???
• ????????????????????ns/m?
• ????????????????????????
• ???( or ???? or ????) ???????????????????????????