A periodic composite signal contains frequencies from 100 to 400 KHz with a step of 20...
A periodic composite signal contains frequencies from 100 to 400 KHz with a step of 20 KHz. The peak amplitude is 100 V for the lowest and the highest signals and is 200 V for the 200-KHz signal. Assuming that the amplitudes change gradually from the minimum to the maximum, draw the frequency spectrum.
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ANSWER
Given that
Periodic composite signal : It can be decomposed into a series of simple sine waves with discrete frequencies, frequencies that have integer values(1, 2, 3, and so on).
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A periodic composite signal contains frequencies from 100 to 400
KHz with a step of 20...
1. A non-periodic composite signal contains frequencies from 10 to 30 KHz. The peak amplitude is...
1. A non-periodic composite signal contains frequencies from 10 to 30 KHz. The peak amplitude is 10 V for the lowest and the highest signals and is 30 V for the 20-KHz signal. Assuming that the amplitudes change gradually from the minimum to the maximum, draw the frequency spectrum.
1. An analog signal \(\mathrm{x}(\mathrm{t})\) contains frequencies from 0 up to \(10 \mathrm{kHz}\). You can assume...
1. An analog signal \(\mathrm{x}(\mathrm{t})\) contains frequencies from 0 up to \(10 \mathrm{kHz}\). You can assume any arbitrary spectrum for this signal. (Note that this signals also has frequencies from 0 to \(-10 \mathrm{KHz} .)\) a) Draw the frequency spectrum of the signal after it has been sampled with a sampling frequency \(\mathrm{F}_{\mathrm{s}}=25 \mathrm{kHz}\) b) What range of sampling frequencies allows exact reconstruction of this signal from its samples? c) How is the original signal reconstructed from the sampled signal?...
14. Given a sinusoidal modulating signal with frequencies f," 10 kHz and a carrier signal of...
14. Given a sinusoidal modulating signal with frequencies f," 10 kHz and a carrier signal of 100 MHz, determine the bandwidth of FM for the three cases (amplitudes: 1. 10, 100, 1000) when the maximum frequency deviation is 50 kHz and k,-2? × 100 rad/sec/volt.
a. Find the Bandwidth (b) Draw he spectrum asuming volls. components have a maximum amplitude of 5 41 Л signal has HW of 75Hz. The highest frequency is 175Hz. (a). Find the lowest frequency. (b)....
a. Find the Bandwidth (b) Draw he spectrum asuming volls. components have a maximum amplitude of 5 41 Л signal has HW of 75Hz. The highest frequency is 175Hz. (a). Find the lowest frequency. (b). Draw the spectrum if the signal contains all frequencies of the same amplitude 42 If a signal has 2 data levels with a pulse duration of lms, calculate the pulse rate and bit rate
a. Find the Bandwidth (b) Draw he spectrum asuming volls. components...
Consider a message signal m(t) that contains frequency components at 100, 200, and 400 Hz. This...
Consider a message signal m(t) that contains frequency components at 100, 200, and 400 Hz. This signal is used to modulate a carrier at 100 kHz to obtain an SSB modulated signal. At the receiver, in the coherent detector is used to recover m(t), the oscillator supplies a sine wave of frequency 100.02 kHz instead of a cosine wave of frequency 100 kHz. (a) Determine the frequency components of the detector output if the SSB signal transmits the upper sideband....
8.4 Mixers 8.21* An AM signal is transmitted on an 800-kHz carrier. The baseband frequency range...
8.4 Mixers 8.21* An AM signal is transmitted on an 800-kHz carrier. The baseband frequency range extends from 100 Hz to 5 kHz. This signal is to be detected by a superheterodyne receiver with a 55-kHz intermediate frequency. (a) What is the frequency of the local oscillator? (b) What must be the Q of the IF stages if the 1-dB points are to correspond to the maximum and minimum frequencies of the IF signal?
Assume that an AM transmitter is modulated with a video testing signal given by em(t) =...
Assume that an AM transmitter is modulated with a video testing signal given by em(t) = =20 + 60 sin (2πf1t), where f1 = 3.57 MHz. Let the carrier signal c(t) = Ac cos(2πfct), where Ac = 100 and fc = 100 MHz. The AM signal is fed into a 50-Ω load. (a) Derive an expression for the AM DSB-FC signal in time domain. (b) Construct the AM waveform, giving numerical values of the maximum amplitude, Amax and the minimum...
5. A signal contains the following frequencies, 100 Hz, 247 Hz, and 750 Hz. What is...
5. A signal contains the following frequencies, 100 Hz, 247 Hz, and 750 Hz. What is the Nyquist frequency of the signal? 6. If an 8-bit ADC accepts input voltage from -5V to 5 V, calculate: (a) number of quantization levels (b) resolution of ADC (c) quantized value of 2.5 V.
25. A reduction in strength as signal is transmitted from source to destination is referred to attenuation 26. In simplex communication, transmission signals are transmitted in both directions 27...
25. A reduction in strength as signal is transmitted from source to destination is referred to attenuation 26. In simplex communication, transmission signals are transmitted in both directions 27. The peak amplitude is the maximum value or strength of the signal over time; typically, this value is measured in volts. 28. The Spectrum of a signal is the range of frequencies that it contains. 29. The place where telephone companies terminate customer lines and locate switching equipment to interconnect those...
A baseband signal has frequency components from de to 20 kHz. Determine (a) the theoretical minimum...
A baseband signal has frequency components from de to 20 kHz. Determine (a) the theoretical minimum sampling rate and (b) the maximum time interval between succes- sive samples. 8-2
14. Given a sinusoidal modulating signal with frequencies f," 10 kHz and a carrier signal of 100 MHz, determine the bandwidth of FM for the three cases (amplitudes: 1. 10, 100, 1000) when the maximum frequency deviation is 50 kHz and k,-2? × 100 rad/sec/volt.
a. Find the Bandwidth (b) Draw he spectrum asuming volls. components have a maximum amplitude of 5 41 Л signal has HW of 75Hz. The highest frequency is 175Hz. (a). Find the lowest frequency. (b). Draw the spectrum if the signal contains all frequencies of the same amplitude 42 If a signal has 2 data levels with a pulse duration of lms, calculate the pulse rate and bit rate
a. Find the Bandwidth (b) Draw he spectrum asuming volls. components...
Consider a message signal m(t) that contains frequency components at 100, 200, and 400 Hz. This signal is used to modulate a carrier at 100 kHz to obtain an SSB modulated signal. At the receiver, in the coherent detector is used to recover m(t), the oscillator supplies a sine wave of frequency 100.02 kHz instead of a cosine wave of frequency 100 kHz. (a) Determine the frequency components of the detector output if the SSB signal transmits the upper sideband....
5. A signal contains the following frequencies, 100 Hz, 247 Hz, and 750 Hz. What is the Nyquist frequency of the signal? 6. If an 8-bit ADC accepts input voltage from -5V to 5 V, calculate: (a) number of quantization levels (b) resolution of ADC (c) quantized value of 2.5 V.
25. A reduction in strength as signal is transmitted from source to destination is referred to attenuation 26. In simplex communication, transmission signals are transmitted in both directions 27. The peak amplitude is the maximum value or strength of the signal over time; typically, this value is measured in volts. 28. The Spectrum of a signal is the range of frequencies that it contains. 29. The place where telephone companies terminate customer lines and locate switching equipment to interconnect those...
A baseband signal has frequency components from de to 20 kHz. Determine (a) the theoretical minimum sampling rate and (b) the maximum time interval between succes- sive samples. 8-2
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