전자기학의 기본적인 변수들 (basic parameters of electromagnetics)

1. wave number

: measure of the number of wavelengths in a span of 2π

* loss media

   

* lossless media

   

* vacuum (air) [dispersion relation for vacuum]

* dispersion relation (frequency, ω vs. wave number, k)

 

2. Propagation constant, 
* loss media

   

*lossless media

α : attenuation constant
β : phase constant

 

3. velocity of wave propagation
* loss media

* lossless media

in air,

 

4. wavelength, λ
* loss media

 

* lossless media


5. intrinsic impedance

 

in air,

6. permittivity and permeability of free space