You mean it by space modulation? If yes, than the signal radiated in a space from antenna array and it can create Amplitude modulation if each element has different input power.
If antenna are switched at pre fixed rate in circular fashion, it can create Frequency Modulation.
You mean it by space modulation? If yes, than the signal radiated in a space from antenna array and it can create Amplitude modulation if each element has different input power.
If antenna are switched at pre fixed rate in circular fashion, it can create Frequency Modulation.