Radio propagation and free space attenuation

= Test yourself, answer these questions=
 * What the difference between EIRP (Effective Isotropic Radiated Power) and ERP (Effective Radiated Power)?
 * What is the difference between isotropic and non isotropic sources?
 * Explain half power beamwidth and first null beamwidth.
 * What are the parameters for the radio propagation, taken a realistic system in mind?
 * What is the fading margin?
 * How do Receiver sensitivity relate to received power?
 * What effect does the bandwidth of the signal has on the communication link?
 * Why does a 20 Mbit/s datalink use more capacity than a voice call of e.g. 16 kbit/s? (to factors)
 * What are the relations between Mbit/s and MHz?

Examples for UMTS

 * Use Widermind (see references) for calculating typical values for the radio propagation in UMTS.

= Lecture notes =
 * [[Media:PropagationScenario-Tomasz.pdf]]
 * [[Media:UNIK4700-L4H13.pdf]]
 * [[Media:UNIK4700-L5H12.pdf]]
 * Video: mms://lux.unik.no/UNIK4700-JN/UNIK-20120928.wmv