The principal plane in wave propagation is the E-plane and the H-plane of an
antenna. The E-plane consists of the electric field vector, and by convention,
it's the direction in which the wave is said to be 'polarized'. The H-plane consists
of magnetic field vector of the wave. The electric field vector and the magnetic
field vector are perpendicular to each other, and the direction in which the wave
propagates (moves) is perpendicular to both of them.
Yes, it certainly is appropriate to mention those things together, as the principles of their interaction are so inexorably intertwined.
Ground wave, sky wave and space wave propagation
In a transverse wave, the direction of wave propagation is perpendicular to the direction of the wave oscillation.
Loss = 120 + 40*log(d) - 20*log(h1) - 20*log(h2) d=distance between antenna in kilometersh1 and h2 are heights of antenna in meters.
The antenna should be parallel to the electrostatic field of the wave, and perpendicular to its magnetic field and to its direction of propagation.
Wave propagation
In a longitudinal wave, the wavelength is the distance between two consecutive points that are in phase with each other. The propagation direction of the wave is the direction in which the wave is moving. The relationship between the wavelength and the propagation direction in a longitudinal wave is that the wavelength is parallel to the propagation direction.
In a transverse wave, the particles oscillate perpendicular to the direction of wave propagation. In a longitudinal wave, the particles oscillate parallel to the direction of wave propagation.
end-fire antenna = surface-wave antenna
Space wave propagation frequency is nothing special, it is the same frequency of the wave in question, for example WLAN Wifi produces 5.2 GHz radio wave from your computer or from router, so that would be the the space wave propagation frequency in question
... wave's speed of propagation.
Well, it's often referred to as the direction of propagation of the wave.