Numerical - Antenna height for transmission of signal
Q. The minimum antenna height required for transmission in reference to wavelength λ is- Published on 13 Oct 15a. λ
b. λ/4
c. λ/2
d. 4 λ
ANSWER: λ/4
For effective transmission of signal by the transmitter, the antenna height should be at least quarter length of the signal wavelength i.e., λ/4
L= λ/4
= c/4f
Required antenna height decreases with increase in frequency of the signal so modulation is done. With modulation, the low frequency signals are shifted to high frequency signals.
