Contents
- 1 What is the advantage of using a high frequency carrier for transmission?
- 2 What is the carrier frequency in an AM wave when it’s highest?
- 3 What is the disadvantage of FM?
- 4 Why do we need a high frequency carrier?
- 5 Which is the correct definition of carrier wave?
- 6 Which is an example of the necessity of modulation?
What is the advantage of using a high frequency carrier for transmission?
Advantage of using a high frequency carrier wave is The main advantage of high frequency signals is that the signal may be transmitted over very long distances and thus dissipates very less power. The antenna height required for transmission is reduced at higher frequencies.
What is the carrier frequency in an AM wave when it’s highest?
What is the carrier frequency in an AM wave when its highest frequency component is 850Hz and the bandwidth of the signal is 50Hz? 80 Hz.
What is carrier frequency and bandwidth?
For example, Wi-Fi works either 2.4 GHz or 5 GHz carrier frequency. The bandwidth of a channel is the set of frequencies a channel can transmit.
What is the disadvantage of FM?
Disadvantages of FM: Much more Bandwidth (as much as 20 times as much). More complicated receiver and transmitter.
Why do we need a high frequency carrier?
The frequency of carrier signals is almost always higher than that of the baseband signal. The amplitude of the baseband signal is transferred to the high-frequency carrier. Such a higher frequency carrier is able to travel much farther than the baseband signal. What is the need for modulation?
What happens to the carrier wave during modulation?
During the process of modulation, any one of the three parameters viz Vc; and of the carrier wave is varied in accordance with information or message signal, which is the modulation base band audio frequency signal m (t). This would result in three types of modulation.
Which is the correct definition of carrier wave?
Carrier wave. The frequency spectrum of a typical radio signal from an AM or FM radio transmitter. The horizontal axis is frequency; the vertical axis is signal amplitude or power.
Which is an example of the necessity of modulation?
Necessity of modulation? An antenna or aerial is needed, both for transmission and reception. Each antenna should have a size comparable to the wavelength of the signal, (at least ), so that time variation of the signal is properly sensed by the antenna. For an audio frequency signal of frequency f = 15 kHz, the wavelength, .