Waves, antennas & propagation — the radio-frequency physics behind wireless links, from field theory to link budgets.
Watch a traveling plane wave cross a 3-metre region and change frequency, polarization and dielectric permittivity while probing E and B fields live.
Scan a probe around a transmitting dipole and compare short vs. half-wave patterns, directivity, gain and polarization mismatch.
Watch feed current reverse and arm charge build on a half-wave dipole, then read the retarded far-field response at a distant probe.
Compare a free-space reference path against a matched cable and see wavelength compress when velocity factor slows propagation at fixed frequency.
Aim a TE-polarized wave at a dielectric or metal boundary and follow phase reversal, refraction and the reflected/transmitted energy split.
Combine a direct radio path with two wall reflections and see coherent addition produce fading, reinforcement and separate pulse arrivals.
Follow a link across a distance sweep and compare spherical power density, receiver aperture and the Friis path-loss equation.
Explore a parabolic reflector and feed, then scan pointing angle to compare gain, aperture, beamwidth and pointing loss.