The height of an antenna does not have a direct effect on the amplitude of a transmitted or received signal. The amplitude of a signal is primarily determined by factors such as the transmitter power, distance from the transmitter, path loss, and any intervening obstacles or environmental conditions.
However, the height of an antenna can indirectly affect the amplitude of a signal through other factors. Antenna height plays a role in determining the line-of-sight (LOS) path between the transmitter and receiver, especially in situations where the signal propagates in a direct, unobstructed path. In such cases, higher antenna heights can help improve the signal's propagation by reducing obstacles and increasing the signal's fresnel zone clearance.
Moreover, antenna height can influence other propagation phenomena, such as ground reflections, multipath interference, and antenna radiation patterns. These factors can affect the received signal's quality, including its amplitude and other characteristics.
In summary, while the height of an antenna itself does not directly affect the amplitude of a signal, it can indirectly influence the signal's propagation and reception, thereby impacting its amplitude and other properties.