UNIK4700/2012/Wave Propagation Parameters

= Wave Propagation Parameters =

Can also be called "Propagation constant". Somewhat misleading, as the propagation usually varies strongly.

Alternative names:


 * Transmission parameters
 * Propagation parameters
 * Propagation coefficients
 * Transmission constants
 * Secondary coefficients

Propagation constant, symbol γ, is defined by the ratio between the amplitude at the source, and the amplitude at some distance x. Is a complex quantity, so we use α (attenuation constant) and β (phase constant) to define it. Attenuation constant, is the loss of signal, or attenuation of an electromagnetic wave travelling through a medium. Phase constant is the change in phase per meter, along the path travelled.

= Presentation, 2012-09-14 (author: Joachim Tingvold) =
 * [[Media:Propagation_discussion.pdf|Presentation.pdf (without transitions, etc)]]

Literature:

 * Andersen, J.B., "Propagation measurements and models for wireless communications channels"
 * Simon Saunders, Alejandro Aragón-Zavala, "Antennas and propagation for wireless communication systems"
 * Seybold, J. S., "Introduction to RF Propagation"
 * Andreas F. Molisch, "Wireless Communications"
 * Andrea Goldsmith, "Wireless Communications"
 * Shigekazu Shibuya, "A basic atlas of radio-wave propagation"

Keywords used:


 * wireless electromagnetic propagation
 * wireless electromagnetic propagation parameter
 * wireless electromagnetic propagation fading
 * wireless propagation refraction
 * wireless wave attenuation constant