Question
In: Electrical Engineering
1) Determine the frequency deviation and modulation index for an FM modulator with 8Hz / mV...
1) Determine the frequency deviation and modulation index for an FM modulator with 8Hz / mV frequency sensitivity to which a modulating tone equal to 5Cos (2π5000t) has been applied.
select an answer:
a. 20 Hz, 16
b. 40 KHz, 8
c. 40 Hz, 8
d. 20 KHz, 16
e. None of the above
Solutions
Manojponduru answered 1 year agoRelated Solutions
Please type at least 100 words: Compare AM (Amplitude Modulation) with FM (Frequency Modulation) in the...
Please type at least 100 words:
Compare AM (Amplitude Modulation) with FM (Frequency Modulation)
in the context of modulation techniques, frequency range, bandwidth
requirements, complexity, noise, and hardware.
You are given the task of combining both analog phase modulation(PM) and analog frequency modulation(FM) transmitters...
You are given the task of combining both analog phase
modulation(PM) and analog frequency modulation(FM) transmitters .
Describe the procedure to combine these transmitters into a single
one such a way that your new transmitters operates only in one of
the modes (either analog PM or FM) at a time based on the arbitrary
choice of transmitter side user and the transmitter side user could
change the mode anytime he/she wants during the operation.
Frequency Modulation (Simulation): Briefly discuss some techniques that you could use to modify the modulation index,...
Frequency Modulation
(Simulation):
Briefly discuss some
techniques that you could use to modify the modulation index, and
also, to increase the signal bandwidth for this FM
signal.
1) Compare AM and FM modulation (advantages, disadvantages). 2) Why is the use of FM more...
1) Compare AM and FM modulation (advantages, disadvantages).
2) Why is the use of FM more preferred than PM? Explain your
answer. (Hint: Compare the frequency deviations in both cases)
3) Give a short qualitative justification of the fact that FM
has more noise immunity than AM.
Q2. (a) With appropriate block diagram, describe two methods/principles of demodulating a Frequency Modulation (FM) signal....
Q2.
(a)
With appropriate block diagram, describe two methods/principles of
demodulating a Frequency Modulation (FM) signal.
(b)
Consider a frequency modulated signal FM )]sin(cos[)(tttsmcωβω+=
where mω is the frequency of a sinusoidal message signal, cω is the
carrier frequency and β is the modulation index.
i)
Using the above equation )(ts, explain the definition of Narrowband
FM and wideband FM.
ii)
Prove that the narrowband FM signal is given by the equation
)sin()sin()cos()(ttttsmccωωβω−=.
(c)
An angle modulated signal is given...
Estimate the desired parameters and draw the block diagram of an Armstrong indirect FM modulator to...
Estimate the desired parameters and draw the block diagram of an
Armstrong indirect FM modulator to generate an FM carrier with a
carrier frequency of 102 MHz and Δ?=25 kHz based on following
constraint:
A narrow-band FM generator is available at a carrier frequency
200 KHz and Δ? is 12.2 Hz.
The local oscillator has an adjustable range of 9 MHz to 10
MHz.
There is bandpass filter with any center frequency.
And only doublers are...
Estimate the desired parameters and draw the block diagram of an Armstrong indirect FM modulator to...
Estimate the desired parameters and draw the block diagram of an
Armstrong indirect FM modulator to generate an FM carrier with a
carrier frequency of 102 MHz and ∆? = 25 kHz based on following
constraint: (1) A narrow-band FM generator is available at a
carrier frequency 200 KHz and ∆? is 12.2 Hz.( 2) The local
oscillator has an adjustable range of 9 MHz to 10 MHz. (3) There is
bandpass filter with any center frequency. (4) And only...
a) AM transmitters more commonly use low-level modulation, while FM transmitters more commonly use high-level modulation....
a) AM transmitters more commonly use low-level modulation, while
FM transmitters more commonly use high-level modulation.
True or False
b) Explain the basic elements of a Single Side Band
(SSB). What element distinguishes it from a DSB
transmitter?
c) As regulated by FCC law, what component is used to generate
the carrier frequency of broadcast transmitters?
d) A …. uses a ROM look-up table to generate sinewaves or other
signal types for carrier signal generation.
e) Explain the difference between...
You are given the task of combining both analog phase modulation (PM) and analog frequency modulation...
You are given the task of combining both analog phase modulation
(PM) and analog frequency modulation (FM) transmitters. Describe
the procedure to combine these transmitters into a single one in
such a way that your new transmitter operates only in one of the
modes (either analog PM or FM) at a time based on the arbitrary
choice of transmitter side user and the transmitter side user could
change the mode anytime he/she wants during the operation.
1. Explain the basic principles of radio frequency transmissions. 2. Describe the different types of modulation...
1. Explain the basic principles of radio frequency
transmissions.
2. Describe the different types of modulation techniques.
3. Explain how frequency and wavelength relate to one
another.
4. Describe 5 different behaviors that radio waves exhibit.
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