0
Is important to use as high a percentage modulation as possible while ensuring that overmodulation does not occur. The side bands contain the information and have maximum power at 100% modulation. And AM transmiters attempt to maintain betwen 90 and 95 percent modulation as a compromise between efficiency and the change of drifting into into overmodulation.
sources
page 76 second paragraph of the MODERN ELECTRONIC COMUNICATION
By Jeffrey S.Beasley and Gary M.Miller
What else can I help you with?
Why you calculate percentage modulation?
For AM (amplitude modulation) signals, it is the ratio (x100 of course) of the modulating signal to the carrier signal. presumably FM calculations follow a similar course.
What is it called when a high percentage of the species on Earth dies off?
Mass extinction
Why do power plants emit such a high percentage of pollutants?
Because of the chemicals needed to produce energy.
What is the difference between the standard amplitude modulation linear addition and multiplication of signals?
In modulation u r sending two signals but their frequencies are sum or difference of carrier frequency and signal frequency.In addition u send two signals at two different frequencies so more interference.
What is the difference between AM and ASK?
Amplitude Modulation (AM) and Amplitude Shift Keying (ASK) are both techniques used in communication systems, but they serve different purposes. AM is an analog modulation technique where the amplitude of a carrier wave is varied in proportion to the instantaneous amplitude of the audio signal, typically used in radio broadcasting. In contrast, ASK is a digital modulation scheme where the amplitude of the carrier signal is switched between two levels to represent binary data, making it suitable for digital communication systems. Essentially, AM is used for analog signals, while ASK is used for transmitting digital information.
How do you xxplain Why modulation is desirable?
Explain why modulation is necessary or desirable.
In what stage modulation is done on high power amplitude modulation transmission?
In high power AM transmission, modulation is done at
What is the modulation index called when it is expressed as a percentage?
When the modulation index is expressed as a percentage, it is commonly referred to as the "percentage modulation." This representation indicates the extent of modulation in relation to the carrier signal, showing how much the amplitude of the carrier varies due to the modulating signal. It provides a clearer understanding of modulation depth for practical applications in communication systems.
What characteristic of an audio tone determines the percentage of modulation of an FM broadcast transmitter?
Only the amplitude of the audio tone determines the percentage modulation of an FM transmitter
What is high level AM modulation?
High level AM modulation is a type of modulation using class c (90 percent) amplifiers. The system uses medium power tubes or transistors and is bulky.
Explain Why high Quality factor is needed in RLC Circuits?
the higher the Q the narrower the bandpass or band-rejection. however high Q is not always desirable. for example in receiver IF stages too high a Q will filter out some of the needed modulation bandwidth, destroying signal information.
What are the advantages frequency modulation amplitude modulation?
Frequency modulation have some advantages over amplitude modulation, FM is not sensitive to the amplitude noise, and have high efficient use of transmitted power
What is lowlevel amplitude modulation and highlevel amplitude modulation?
low level amplitude modulation occurs when the carrier signal is first modulated and then amplified,whereas in high level modulation,the carrier signal is first amplified and then is modulated.
Why you calculate percentage modulation?
For AM (amplitude modulation) signals, it is the ratio (x100 of course) of the modulating signal to the carrier signal. presumably FM calculations follow a similar course.
What are the advantages of pulse position modulation?
Pulse position modulation offers high noise immunity, efficient use of bandwidth, and easy implementation with digital circuits. This modulation technique is particularly useful in applications requiring high data transmission rates and reliable communication in noisy environments.
What is high level modulator?
High level AM modulation is a type of modulation using class c (90 percent) amplifiers. The system uses medium power tubes or transistors and is bulky.
Is it desirable for a battery to have a high internal resistance?
No, it is desirable for a battery to have a low internal resistance.
