Chapter - Superheterodyne Receiver; PPT; ADC; Semester; Engineering Notes - Computer Science Engineering (CSE)

Computer Science Engineering (CSE): Chapter - Superheterodyne Receiver; PPT; ADC; Semester; Engineering Notes - Computer Science Engineering (CSE)

The document Chapter - Superheterodyne Receiver; PPT; ADC; Semester; Engineering Notes - Computer Science Engineering (CSE) is a part of Computer Science Engineering (CSE) category.
All you need of Computer Science Engineering (CSE) at this link: Computer Science Engineering (CSE)

Introduction

 

The slides cover the following topics:

1. Super Heterodyne Receiver

2. Up Conversion

3. Down Conversion

 

Super heterodyne receiver-----------------------------Next slide

 

Super heterodyne receiver

 

Chapter - Superheterodyne Receiver; PPT; ADC; Semester; Engineering Notes - Computer Science Engineering (CSE)

 

Prepared by :  Abdullah Ba-Sulaiman  & Yasser Badahdah, EE370, Sec# 1,   Edited by : Dr. Ali Muqaibel

 

Super heterodyne receiver-----------------------------Next slide

 

What is the intermediate frequency fif?

 

• It is fixed frequency located at 455 kHz

 

•  The IF filter is band-pass with center frequency of 455 kHz and bandwidth equal to the bandwidth of one AM channel approximately =10 kHz.

 
Chapter - Superheterodyne Receiver; PPT; ADC; Semester; Engineering Notes - Computer Science Engineering (CSE)
 
Super heterodyne receiver-----------------------------Next slide
 

Why do we need the IF Stage?

 

• It  is too difficult to design a tunable and sharp filter. So we design  sharp & fixed filter.

 

• The channel to be filtered out should first be frequency shifted to the IF frequency by a frequency converter as shown in the super heterodyne Figure

 
Chapter - Superheterodyne Receiver; PPT; ADC; Semester; Engineering Notes - Computer Science Engineering (CSE)
 
Super heterodyne receiver-----------------------------Next slide
 

Up conversion Fc+Fif

 

Chapter - Superheterodyne Receiver; PPT; ADC; Semester; Engineering Notes - Computer Science Engineering (CSE)

 

Super heterodyne receiver-----------------------------Next slide
 

Down conversion Fc- Fif

 

Chapter - Superheterodyne Receiver; PPT; ADC; Semester; Engineering Notes - Computer Science Engineering (CSE)

 

Super heterodyne receiver-----------------------------Next slide

 

Why up conversion is better than down conversion?

 

The range of radio station on AM is: 550kHz→1600kHz

Up (Fc+Fif): 1005kHz→2055kHz

                      ratio frequency is 1:2

down (Fc-Fif): 95kHz→1155kHz

                     ratio frequency is 1:12

We see the ratio frequency in up conversion is smaller than in down conversion which means it is easier to design.

 

Super heterodyne receiver-----------------------------Next slide

 

Why we filter at RF stage?

 

Chapter - Superheterodyne Receiver; PPT; ADC; Semester; Engineering Notes - Computer Science Engineering (CSE)

 

Super heterodyne receiver-----------------------------Next slide

 

Chapter - Superheterodyne Receiver; PPT; ADC; Semester; Engineering Notes - Computer Science Engineering (CSE)

 

Super heterodyne receiver-----------------------------Next slide

 

Chapter - Superheterodyne Receiver; PPT; ADC; Semester; Engineering Notes - Computer Science Engineering (CSE)

The document Chapter - Superheterodyne Receiver; PPT; ADC; Semester; Engineering Notes - Computer Science Engineering (CSE) is a part of Computer Science Engineering (CSE) category.
All you need of Computer Science Engineering (CSE) at this link: Computer Science Engineering (CSE)

Download free EduRev App

Track your progress, build streaks, highlight & save important lessons and more!

Related Searches

Chapter - Superheterodyne Receiver; PPT; ADC; Semester; Engineering Notes - Computer Science Engineering (CSE)

,

shortcuts and tricks

,

video lectures

,

practice quizzes

,

Exam

,

ppt

,

Viva Questions

,

Important questions

,

Semester Notes

,

pdf

,

past year papers

,

Previous Year Questions with Solutions

,

Sample Paper

,

mock tests for examination

,

Summary

,

study material

,

Chapter - Superheterodyne Receiver; PPT; ADC; Semester; Engineering Notes - Computer Science Engineering (CSE)

,

Objective type Questions

,

Extra Questions

,

MCQs

,

Free

,

Chapter - Superheterodyne Receiver; PPT; ADC; Semester; Engineering Notes - Computer Science Engineering (CSE)

;