| Twisted pair cables are insusceptible to external noise and emit less noise,
so they are used for such as speaker cables and power wires which require
strict noise reduction. When current frequency in the cable increases,
the current flows non-uniformly in the copper wire due to skin effect and
proximity effect, resulting in the increase of resistance and the reduction
of inductance. Losses are proportional to resistance, and the change in
inductance distorts the signal. Therefore, it is important to investigate
both resistance and inductance at different frequencies before designing
the cable. This note presents the use of magnetic field analysis to obtain
resistance and inductance in a cable at different frequencies. |
Cable
