Difference between revisions of "UNIK4700/2012/Wave Propagation Parameters"
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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. | 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 ( | + | = Presentation, 2012-09-14 (author: Joachim Tingvold) = |
*[[Media:Propagation_discussion.pdf|Presentation.pdf (without transitions, etc)]] | *[[Media:Propagation_discussion.pdf|Presentation.pdf (without transitions, etc)]] | ||
Latest revision as of 07:50, 20 September 2014
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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)
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
