Antenna Briefs 7 - Radio Wave Reflections in Propagation and Antenna Design Part 2
This is the second half of episode 7 which shows how reflections are important in radio / wireless wave propagation, and in the design and construction of antennas as well. Part 1 overviewed both, and touched on related effects including refraction, diffraction, absorption, and scattering. Part 2 (this video) provides some key theoretical background concepts showing how reflection occurs and then presents real-world measurements of reflection and absorption / attenuation caused by typical materials found in building construction. We also repeat Hertz's original experiment using modern TinySA instruments and a household mirror. In both videos, the focus is at frequencies of VHF and above, including cellular radio bands. However, much of the material is applicable at HF as well.
TYLKO ZAREJESTROWANI I ZALOGOWANI UŻYTKOWNICY WIDZĄ LINKI. DARMOWA REJESTRACJA
This is the second half of episode 7 which shows how reflections are important in radio / wireless wave propagation, and in the design and construction of antennas as well. Part 1 overviewed both, and touched on related effects including refraction, diffraction, absorption, and scattering. Part 2 (this video) provides some key theoretical background concepts showing how reflection occurs and then presents real-world measurements of reflection and absorption / attenuation caused by typical materials found in building construction. We also repeat Hertz's original experiment using modern TinySA instruments and a household mirror. In both videos, the focus is at frequencies of VHF and above, including cellular radio bands. However, much of the material is applicable at HF as well.
TYLKO ZAREJESTROWANI I ZALOGOWANI UŻYTKOWNICY WIDZĄ LINKI. DARMOWA REJESTRACJA
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
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