Q4. Answer A) An AM/DSB-LC signal has a power of 140 watt, the maximum frequency of the baseband signal is 3.4 kHz, while the carrier frequency is 50 kHz. If the additive noise power spectral density (two-sided) in the transmission channel is: S„ (w) = (10-6 x Vw) watt/Hz 1- Draw the spectrum of the AM signal. 2- Find the SNR in the transmission channel.

Q: #4. The block diagram of a wireless receiver front-end is shown in the figure below. Compute the…

A: Given the block diagram: a) We need to compute the overall noise figure of this subsystem. b) If…

Q: 3(a). Why is the bode plot needed to plot the frequency response curve? 3(b). In an ac amplifier,…

A: In frequency response analysis, we carry out two kind of analysis one is analysis of magnitude with…

Q: Q4/ A) An AM transmitter has a carrier power of 30 W. The percentage of modulation is 85 percent.…

A: Both part of question 4 is solved as given below

Q: 3. What do you infer from the frequency spectrum of a PWM signal?

A: We are authorized to answer one question at a time, since you have not mentioned which question you…

Q: 6-16 The discrete-spectrum signal of Problem 6-4, having components at 1.2 kHz, 3.6 kHz, and 6 kHz,…

A: If a physical quantity takes only distinct values with gaps between them, it is said to have a…

Q: An FM modulator has carrier frequency of 93.2 MHz, modulated by (10 kHz) sine wave. The resultant FM…

A: As per the guidelines of bartleyby I need to answer first three subparts only So kindly repost other…

Q: Explain the following for the EHF: Frequency: Wavelength: Propagation Via:

A: Extremely High Frequency (EHF)Is used in the international telecommunication network. These are…

Q: a.) modulation index at the output of the combining network and the power amplifier; b.) frequency…

A:

Q: A 1 MHz carrier of 10V amplitude, when frequecny modulated by a 400 Hz, 1V modulating signal, under…

A: Given, fc=1 MHzAc=10 Vfm1=400 HzAm1=1 V∆f=1 kHzfm2=1 kHzAm2=2 V

Q: 6- The bandwidth required for a modulated carrier depends on: a) The carrier frequency b) the…

A: The band width of a signal is defined as twice the baseband bandwidth of the signal.

Q: (a) Calculate the midband voltage gain Vs by replacing capacitors with open circuit? (b) Calculate…

A: The circuit diagram is shown below,

Q: nna size is affected by FALSE TRUE

A:

Q: b. What is the channel capacity for signal power of 250 W, noise power of 20 W, and bandwidth of 3…

A:

Q: For an AM superheterodyne receiver using high-side injection with local oscillator frequency of 1400…

A:

Q: The plot of the frequency domain power spectrum, Xf), for a double-sideband, amplitude-modulated…

A: Modulation techniques : Modulation techniques are generally used in the communication system to…

Q: Figure 1. Shows the block diagram of a wideband frequency modulator using the indirect method. This…

A: Write the given values. β=0.2fm=3 kHzn1=50∆fout=120 kHzfc=200 MHz

Q: Chose the correct answer 6- The bandwidth required for a modulated carrier depends on: a) The…

A:

Q: 4.21 Consider the FM discriminator shown in Fig- ure 4.38. The envelope detector can be considered…

A: FM Demodulation Detection FM detectors are circuits that convert carrier signal frequency…

Q: .A 360-W carrier is simultaneously modulated by two audio waves with modulation percentages of 55…

A:

Q: A 1 MHz carrier of 10V amplitude, when frequecny modulated by a 400 Hz, 1V modulating signal, under…

A: Use the Carson's rule to find the bandwidth of  the FM signal as, BW=2fm+∆f........(1) Here, fm is…

Q: Design an FM system that achieves an SNR at the receiver equal to 40 dB and requires the minimum…

A: Given:SNR at the receiver=40dBBandwidth=120 kHzmessage bandwidth=10 kHzaverage to peak power ration…

Q: сараcity, log2(SNR), each extra bps/Hz requires roughly a doubling of transmit power. A) Suggest a…

A:

Q: B. An FM signal with modulation index B which the carrier component of the FM signal is reduced to…

A:

Q: 6. A 270kHz sinusoidal carrier of amplitude 5V is frequency modulated by a 4.5kHz sinusoidal…

A:

Q: What is the channel capacity, in bits per second, of a 20-MHz channel with an S/N ratio of 23 dB?

A: Given, S/N ratio = 23 dB Bandwidth = 20 MHz

Q: A spectrum analyzer with an input impedance of 205 measure the power spectrum of an AM signal at the…

A: We are authorized to answer three subparts at a time, since you have not mentioned which part you…

Q: You have an FSK transmitter using a mark frequency of 500 kHz, a space frequency of 380 kHz, and…

A: We need to find out bandwidth of FSK and space frequency of PSK .

Q: An FM signal with modulation indexß which the carrier component of the FM signal is reduced to zero…

A:

Q: Q1] A carrier signal (peak amplitude = 39V, frequency = 100MHZ) is requency modulated by the…

A:

Q: The expression for bandwidth BW of a PCM system, where v is the number of bits per sample and fm is…

A: The correct option along with the explanation is provided in the following section.

Q: V (a) Calculate the midband voltage gain Ve by replacing capacitors with open circuit? (b) Calculate…

A: The given circuit diagram is shown below,

Q: For a carrier of 250W and 90% modulation, what is the power on each sideband and the total power?

A:

Q: Identify how the excessive bandwidth use of FM can be overcome. (Check all that apply.) By using…

A: Need to find how we can overcome large bandwidth issue in FM

Q: Q.6: A communication system employs a continuous source. The channel noise is white and Gaussian.…

A:

Q: A carrier signal of 1.0 Volt amplitude and a sinusoidal modulating signal of 0 v, put in series, are…

A: Modulation is process by which some properties of carrier signal is varied according to modulating…

Q: A 1 MHz carrier of 10V amplitude, when frequecny modulated by a 400 Hz, 1V modulating signal , under…

A: Bandwidth of FM can be calculated by Carson rule   Now as per Carson rule 2(fm+∆f) ⋯⋯⋯⋯⋯ Equation…

Q: A carrier signal of 1.0 Volt amplitude and a sinusoidal 0.0 v, put in series, are applied to a…

A: Modulation is process by which some properties of carrier signal is varied according to modulating…

Q: Use Carson’s rule to determine the bandwidth of an FM channel when the maximum deviation allowed is…

A: Given, Maximum frequency deviation presented in FM signal, Δf = 5 kHz Highest modulating frequency,…

Q: Q1/ Consider a receiver with a 4-dB noise figure and a 2-MHz bandwidth. If a carrier-to-noise ratio…

A: According to the guideline we need to solve only the first question. According to the question we…

Q: A carrier (fc = 100 MHZ, A, = 25V) is frequency modulated by the sine wave (fm = 8 kHz, Am = 3V)…

A:

Q: 6.) Find the a.) Find the modulation index of of a system with a 350-MHz carrier that is devi- ated…

A: FM refers to frequency modulation method used for encoding the an information or a data over the…

Q: Problem 4: a. For a Communications system with capacity of 400 kbps and SNR = 35dB and a lower…

A:

Q: -18 A baseband signal having components from near de to 8 kHz is used to frequency modulate a…

A:

Q: The SNRi of an FM transmitter is determined to be 24.093dBV. Solve for the peak frequency deviation…

A: Given :  Brief description: In the above question they are discussing about a frequency modulator.…

Q: A signal of 10 V is applied to a 50 2 coaxial transmission line terminated in a 100 load. The…

A: Given, Load impedance, ZL=100 Ω Input impedance, Zin=50 Ω Voltage reflection coefficient, Γ=?

Q: An FM signal with modulation index ß which the carrier component of the FM signal is reduced to zero…

A:

Q: Example 4.3. Determine the frequency deviation and carrier swing for a frequency-modulated (FM)…

A: Modulation is process by which some properties of carrier signal is varied according to modulating…

Q: listance between the transmitter and receiver as well as the square of the frequency of the radio…

A: It is given that: i) f=900MHz d=1km,10km,30km and 50kmii) f=5.8GHz d=1km,10km,30km and 50km

Q: Q4: Determine the power in the sidebands as a percentage of the total power of a modulated signal in…

A: Individual depths of modulation =0.3 and 0.4 Percentage of sideband power to total power?

Q: b. What is the channel capacity for signal power of 250 W, noise power of 50 W, and bandwidth of 3…

A: The channel capacity is 2.334 MHz

Amplitude modulation

A radio signal can carry information in the form of sound or image for broadcasting or communication. For it to be sent to a greater distance, the signal must be changed or modulated in some way. One of the easiest way is to change the amplitude of the signal with variations of the video or the audio signal. This is called Amplitude Modulaton. In this modulation information of message is carried in amplitude of carrier signal.