Question

Which size of the antenna should have comparable to the wavelength $\lambda$ of the signal, to radiate signals with high frequency?

• A. Atleast $\sim \lambda / 2$
• B. Atleast $\sim \lambda / 4$
• C. At maximum $\sim \lambda / 2$
• D. At maximum $\sim \lambda / 4$

Answer 1

Answer: (B)

To radiate signals with high efficiency, the antennas should have a size comparable to the wavelength $\lambda$ of the signal (atleast $\sim \lambda / 4$ ). So, lesser the wavelength, the higher will be frequency of a signal.