Refractive Index of Coaxial Cable

AI Thread Summary
The refractive index of standard coaxial cable is typically derived from the propagation constant, which can be found in the cable's data sheet. It can also be calculated using the formula: speed of light in vacuum divided by the propagation velocity in the cable. For traceable sources, users are advised to consult the specific spec sheet of the coaxial cable in question. Online dictionaries, such as Merriam-Webster, provide definitions but are not primary sources for technical specifications. Accurate information is essential for understanding coaxial cable performance.
Benjamin Irwin
Messages
1
Reaction score
0
Anyone know the refractive index of a standard coaxial cable and have a traceable source?
 
Engineering news on Phys.org
Google knows. Google knows everything...
 
Benjamin Irwin said:
Anyone know the refractive index of a standard coaxial cable and have a traceable source?
It's the reciprocal of the propagation constant, which is usually listed in the data sheet for the cable.
Or equivalently: {speed-of-light-in-vacuum} / {propagation-velocity-in-the-cable}.

See: https://www.merriam-webster.com/dictionary/refractive index
 
  • Like
Likes jim hardy
Benjamin Irwin said:
a traceable source
That would be the spec sheet of the cable you want to use.
 
  • Like
Likes dlgoff
Thread 'Weird near-field phenomenon I get in my EM simulation'

Thread 'Weird near-field phenomenon I get in my EM simulation'

I recently made a basic simulation of wire antennas and I am not sure if the near field in my simulation is modeled correctly. One of the things that worry me is the fact that sometimes I see in my simulation "movements" in the near field that seems to be faster than the speed of wave propagation I defined (the speed of light in the simulation). Specifically I see "nodes" of low amplitude in the E field that are quickly "emitted" from the antenna and then slow down as they approach the far...
View full post »

Thread 'EMF (Electromagnetic Field) & EHS (Electromagnetic Hyper Sensitivity)'

Hello dear reader, a brief introduction: Some 4 years ago someone started developing health related issues, apparently due to exposure to RF & ELF related frequencies and/or fields (Magnetic). This is currently becoming known as EHS. (Electromagnetic hypersensitivity is a claimed sensitivity to electromagnetic fields, to which adverse symptoms are attributed.) She experiences a deep burning sensation throughout her entire body, leaving her in pain and exhausted after a pulse has occurred...
View full post »

Similar threads

Excitation of wispering gallery mode in resonator
Replies
4
Views
595
Mutual Inductance of Coaxial Tube and Coil
Replies
1
Views
2K
Can Two RF Signal Sources Connected in Parallel Increase Signal Amplitude?
Replies
16
Views
3K
Basics of RF coil development for MRI
Replies
11
Views
3K
Regarding Fiber Optics and Coaxial Cable
Replies
2
Views
1K
50 Ohm to 75 Ohm to 50 Ohm line?
Replies
10
Views
3K
Impedance matching between two 50 ohm cables through a joint
Replies
11
Views
2K
What is the behavior of currents on a coaxial cable?
Replies
8
Views
5K
Is current cancellation within coaxial cable always true?
Replies
16
Views
3K
Questions about reflected power on a transmission line
Replies
15
Views
2K

Hot Threads

Recent Insights

Back
Top