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)

• 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