11. Superheterodyne Receiver AnalysisConsider a superheterodyne receiver designed to receive AM broadcast signals.RF StagefLOLocal ocillatorIF StageThe intermediate frequency (IF) is set to 455 kHz. The receiver is tuned to an AM signal, (t),with the carrier frequency (fe) of 1.5 MHz and bandwidth of 10kHz.(a) Determine the corresponding local oscillator frequency (fLo) and the image frequency(fimage), under the condition that fLO < 1.5 MHz.HRF(f) =(b) Explain briefly why the image signal cannot be eliminated at the output of the IF filtereven if the IF filter is ideal with the bandwidth of 10 kHz.(c) The frequency response of the RF filter, HRF (f), is given by{1AMDemodulator0.011495 kHz≤ f ≤ 1505 kHzelsewhere(1)Assuming that the tuned AM signal (p(t)) and the image signal have the same power atthe input of the receiver, determine the ratio of image signal power to the tuned AM signalpower at the output of the IF filter.

Given:A superheterodyne receiver designed to receive AM broadcast signals.The intermediate frequency…

(a) Determine the corresponding local oscillator frequency (fLo) and the image frequency (fimage), under the condition that fLO < 1.5 MHz. (b) Explain briefly why the image signal cannot be eliminated at the output of the IF filter even if the IF filter is ideal with the bandwidth of 10 kHz. (c) The frequency response of the RF filter, HRF(f), is given by 1 -{₁ HRF(f) = 0.01 1495 kHz ≤ f ≤ 1505 kHz elsewhere (1) Assuming that the tuned AM signal (p(t)) and the image signal have the same power at the input of the receiver, determine the ratio of image signal power to the tuned AM signal power at the output of the IF filter.

(a) Determine the corresponding local oscillator frequency (fLo) and the image frequency (fimage), under the condition that fLO < 1.5 MHz. (b) Explain briefly why the image signal cannot be eliminated at the output of the IF filter even if the IF filter is ideal with the bandwidth of 10 kHz. (c) The frequency response of the RF filter, HRF(f), is given by 1 -{₁ HRF(f) = 0.01 1495 kHz ≤ f ≤ 1505 kHz elsewhere (1) Assuming that the tuned AM signal (p(t)) and the image signal have the same power at the input of the receiver, determine the ratio of image signal power to the tuned AM signal power at the output of the IF filter.

Introductory Circuit Analysis (13th Edition)

13th Edition

ISBN:9780133923605

Author:Robert L. Boylestad

Publisher:Robert L. Boylestad

Chapter1: Introduction

Section: Chapter Questions

Problem 1P: Visit your local library (at school or home) and describe the extent to which it provides literature...

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