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LoginDifine the term 'amplitude modulation'. Explain any two factors which justify the need for modulating a low frequency baseband signal.
Class 12 Physics in Class 12 . 3 years ago
+10 pts
(a) Power radiated by antenna is given by `P prop (l^(2))/(lambda^(2))`. Hence there is a need of higher frequency conversation for effective power transmission by the antenna.
(B) To transmit signal EFFECTIVELY the size of the antenna should be at least of the size `(lambda)/(4)`, where `lambda` is the wavelength of the signal to be transmitted. So if `lambda` is small (or frequency is HIGH) signal can be transmittedwith reasonable antenna length.
Posted on 11 Dec 2021, this text provides information on Class 12 related to Physics in Class 12. Please note that while accuracy is prioritized, the data presented might not be entirely correct or up-to-date. This information is offered for general knowledge and informational purposes only, and should not be considered as a substitute for professional advice.
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