Question

The physical sizes of the transmitter and receiver antenna in a communication system are:
(A) Proportional of carrier frequency
(B) Inversely proportional to modulation frequency
(C) Inversely proportional to carrier frequency
(D) Independent of both carrier and modulation frequency

Answer 1

Answer:

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Answer 2

Option (c) is the right answer.

The physical sizes of the transmitter and receiver antenna in a communication system are inversely proportional to carrier frequency.

- Both the transmission and the receiver antenna are used for the purpose of transmitting and receiving electromagnetic waves.

- The size or the height of the antenna is not necessary for modulation of the signals rather than that it's dimension is necessary for the modulation of the signals.

- Generally if the wavelength is shorter than it leads to the use of shorter antenna.