Lokalizacja:
Kłodzko JO80IK06AO
Posty: 45504 #8115435
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Antenna Briefs 7 - Radio Wave Reflections in Propagation and Antenna Design - Part 1
This episode covers reflection of radio waves and how it is important in both propagation, and in the design and construction of directional antennas. Part 1 overviews both, as well as introducing related effects including refraction, diffraction, absorption, and scattering. The main focus is at frequencies of VHF and above, including cellular, but a brief mention of HF propagation is also made. Part 2 will provide an overview of how EM fields are reflected (and/or absorbed) by materials including metal and wood, and show real-world measurements of reflection and absorption (attenuation) for some typical materials found in residential and commercial buildings.
TYLKO ZAREJESTROWANI I ZALOGOWANI UŻYTKOWNICY WIDZĄ LINKI. DARMOWA REJESTRACJA
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73! Stanisław SP6MLK
Kłodzko JO80IK06AO
http://ra-ukf.iq24.pl/default.asp
http://www.ukf-te.iq24.pl/default.asp
Przemiennik SR6DKL 439.4750 MHz / 94,8 Hz |
