Q3. A television receiver uses the superheterodyne detection system to translate signals to an intermediate frequency of 44 MHz. Terrestial digital television broadcasts in the U.K. since 2012 have a carrier frequency in the range 470 to 790 MHz. (a) What range of frequencies for a local oscillator is necessary to be able to receive signals across this band? (b) If there is a strong mobile telephone signal transmitted at a frequency of 817 MHz, what is the frequency of the television broadcast that would be susceptible to interference by this image frequency in superheterodyne detection?

Q3. A television receiver uses the superheterodyne detection system to translate signals to an intermediate frequency of 44 MHz. Terrestial digital television broadcasts in the U.K. since 2012 have a carrier frequency in the range 470 to 790 MHz. (a) What range of frequencies for a local oscillator is necessary to be able to receive signals across this band? (b) If there is a strong mobile telephone signal transmitted at a frequency of 817 MHz, what is the frequency of the television broadcast that would be susceptible to interference by this image frequency in superheterodyne detection?

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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