ELECENG 3TR4 Study Guide - Final Guide: Double-Sideband Suppressed-Carrier Transmission, Jim Reilly, Superheterodyne Receiver

• School: McMaster University
• Department: Electrical Engineering
• Course: ELECENG 3TR4
• Professor: ALL

Document Summary

This paper includes 3 pages and 6 questions (including the fact sheet at the end). You are responsible for ensuring that your copy of the paper is complete. Bring any discrepancy to the attention of your invigilator. Special instructions (a) the mcmaster standard calculator (casio fx991) is the only calculator approved for this exam. Sketch the corresponding modulated wave s(t) corresponding to: am, for the case of 100% modulation, double sideband suppressed carrier modulation. (4 marks) Draw your sketches so that one is aligned directly above the other. Use identical scales for the time axes for both parts i) and ii). Show values for all relevant quantities: for each case write down the mathematical equation that describes the modulated wave s(t). (2 marks, sketch the spectra corresponding to the modulated wave for both parts i) and ii) above. Page 1 of 3: question 2, draw a block diagram of a superheterodyne radio receiver, and brie y describe its opera- tion.