The definition of the slow-wave factor

[DrunkBear]

Could someone please show the definition of the "slow-wave factor", or simply offer a link to those corresponding references?
many thanks!

 

[vfone]

slow-wave factor

**broken link removed**

 

[DrunkBear]

slow waves microwaves101

hi vfone,
thanks for your information!
according to its definition, the slow-wave factor also eaquals to β/k0, where β is the phase constant of the slow-wave structure and k0 is determined by the constitutive parameters of the media, and also eaquals to the index of refraction n.
I'm wondering if i've correctly understood it.

 

[vfone]

wave factor

The propagation constant and phase velocity of a loss-less transmission line are given by β =2πf√LC and Vp = 1/√LC , where L and C are the inductance and capacitance per unit length along the transmission line.
Slow-wave propagation can be accomplished by effectively increasing the L and C values.
This can be done introducing periodic variations along the direction of propagation (drilling holes in the substrate, or by etching patterns in the microstrip ground plane).

 

[DrunkBear]

Re: slow-wave factor

yes, transmission lines with periodically loaded C and L are one typical slow-wave structure.
in one paper i'm examining at the moment, it seems the "slow-wave factor" is used to described any wave-guiding structure (even, e.g a parralel plate waveguide filled with dielectric material).
Thank you!