12)10152025302-1-2Consider a wideband phase modulated signal produced by a sinusoidal modulatingwave Am cos(27 fmt), using a modulator with phase sensitivity equal to kp rad/Volt.If the maximum phase deviation of the PM signal is large compared to 1 rad, thebandwidth of the PM signal can be approximated as:a. fmkpAmb. 2fmkpAmc. 4fmkpAmd. None of these1.

Answered: Image /qna-images/answer/66b309c9-2f2f-4b16-85fd-e02d091ce711.jpg

Answered: -1 -2 Consider a wideband phase…

Introductory Circuit Analysis (13th Edition)

13th Edition

ISBN:9780133923605

Author:Robert L. Boylestad

Publisher:Robert L. Boylestad

Chapter1: Introduction

Section: Chapter Questions

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For an Armstrong indirect FM transmitter with the crystal carrier oscillating at 210 kHz, the crystal reference oscillating at 10.2 MHz, the sideband voltage is 0.018 V, the carrier input voltage to the combiner is 5V, the first and second multipliers are both 40, and the modulating signal frequency is 2 kHz, determine: a.) modulation index at the output of the combining network and the power amplifier; b.) frequency deviation at the same two points; and c.) the transmit carrier frequency.
What are the relative amplitudes of the fourth pair of sidebands for an FM signal with a deviation ratio of 8?
An FM modulator has kf=30kHz/V and operates at a carrier frequency of 180 MHza. Find the output frequency for an instantaneous value of the modulating signal equal to150mV. b. If the carrier signal is modulated by a 2Vrms sine wave. Calculate the peak frequencydeviation. c. Using the given in the previous number, also find the bandwidth using the Bessel table below for thePM signal when the message frequency is (a) doubled, (b) halved, but all else remains constant.
What is the voltage gain (Av) of the circuit when β = 100, r0 = 40 kΩ, RB = 360 kΩ, RC = 3.3 kΩ, RE = 220 Ω, Rs = 15 kΩ and RL = 248 kω in the circuit given in the figure?Note-1: the output impedance of the transistor r0 will be taken into account in calculations.Note-2: capacitors are negligible at midband frequency.
The modulating signal that is the input into an FM modulator is m(t)=2cos(10??).a) Express the time domain expression of ?(?) signal.b) Express FM signal in terms of Bessel functions.c) Sketch the frequency spectrum of the modulated signal.d) Determine the bandwidth of ?(?) occupies 98% of the total power (Carson Rule) in the acquired spectrum.e) Determine the condition of required bandwidth of ideal BPF if at least 80% of the total power appears at the output of the filter?
A. The baseband signal in the image Is transmuted by using a linear delta modulation (ΔM), the modulator has the following specifications Sampling rate = 5 Fnyquist, where Fnyquist is the Nyquist rate of the baseband signal, bandwidth = 5 KHz. 1. Determine the maximum step size Δ for delta modulation of this signal, which required avoiding slope overload. 2. Determine the signal to noise ratio in decibel for the signal. 3. What is the maximum power that be transmitted without slope overload distortion 4. if the step size of the delta modulation is 0.02 determine the amplitude and maximum power of baseband signal to a void slope overload .
What is the quality factor for a 2 MHz carrier and 50 dB sideband suppression with the separation of sidebands of 200 Hz?
-MCQ- FM modulator is used to transmit a cosine message signal with 4V amplitude and 20Hz frequency. The frequency deviation constant kf = 25 Hz/V, the carrier is a cosine sign with an amplitude of 10V and a frequency of 2000Hz. The FM modulated signal is passed through a bandpass filter and 90% of the power of the modulated signal remains. What is the bandwidth of the FM modulated signal in this case? a) 240hz b) 20hz c) 100hz d)200hz
Problem1 A baseband signal with frequency components from near dc to 15 kHz frequency modulates a 200-kHz carrier, andthe frequency deviation is ±3 kHz. The signal is applied as the input to a cascade of two frequency triplers and onefrequency doubler. Determine the output (a) center frequency, (b) frequency deviation, and (c) deviation ratio (d) A VCO has an unmodulated carrier frequency of 100 MHz and sensitivity of −12 kHz#V. Determine thefrequency when the input signal is set at 5 V.
amplitude value of output voltage (Vout) = ?? Note1 : E-MOSFET output empedance rd= 70kΩ Note2: capacitors are of negligible size at midband frequency Note3 : 5kHz in midband frequency
The SNRi of an FM transmitter is determined to be 24.093dBV. Solve for the peak frequency deviation caused by the noise if the transmitter sensitivity is determined to be 368.903Hz/V, and a modulating signal of 13.926V and the modulating index is kept at 4
For a square modulating signal with value 0 and 3 V entering an FM modulator with drift sensitivity of 0.1KHz / V and a carrier frequency of 100KHz with Vc = 5V, draw the waveform of the resulting modulated signal indicating the frequency and amplitude values of the wave.

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