When choosing coaxial cables, we may notice a parameter called "phase velocity". What does this parameter specifically refer to? This article will further analyze.
1, A simple definition of phase velocity
The phase of a wave refers to the position at a certain point in the wave period within a given time. The phase propagation speed of waves is called phase velocity. It represents the propagation speed of a specific point with a constant phase, such as a peak or valley, in space. Phase velocity can help people understand how various points of a wave propagate.
2, Detailed explanation of phase velocity
Phase velocity refers to the speed at which a wave moves in phase while propagating in space or within a wave packet.
Consider waves propagating in a medium or free space. Each point on the wavefront has a specific phase, which is the position of the wave relative to a given reference point. Phase velocity describes the speed at which these points move and move along with the phase. It basically represents the speed at which waves' appear 'to propagate. In the above figure, when considering a specific point on the wave (such as A), its propagation phase velocity is mathematically expressed as "Vp=ω/k".
3, Application of Phase Velocity Parameters
The maximum frequency is 5.8GHz, the bending radius is 2 inches, the shielding effect is>90 dB, and the phase velocity is 76%.
The maximum frequency is 5.8GHz, the shielding effect is>90 dB, the PE sheath has low insertion loss, the bending radius is 2 inches, and the phase velocity is 83%.
