How is the physical size of an antenna fundamentally related to the signal being transmitted?
Answer
It is fundamentally tied to the wavelength of the signal, often being a specific fraction like a half-wavelength ($\lambda/2$).
The physical shape and size of the antenna are fundamentally tied to the wavelength of the signal being transmitted. For example, a dipole element is often designed to be a half-wavelength ($\lambda/2$) of the signal.
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