ECE 453
Wireless Communication Systems
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Section  Type  Times  Days  Location  Instructor 

AB1  LAB  0900  1150  T  5080 Electrical & Computer Eng Bldg  Serge Minin 
AB2  LAB  1400  1650  T  5080 Electrical & Computer Eng Bldg  Serge Minin 
AB3  LAB  1000  1250  R  5080 Electrical & Computer Eng Bldg  Serge Minin 
AL1  LEC  0900  0950  M W F  3013 Electrical & Computer Eng Bldg  Steven Franke 
Web Page  http://courses.engr.illinois.edu/ece453/ 

Official Description  Design of a radio system for transmission of information; modulation, receivers, impedance matching, oscillators, twoport network analysis, receiver and antenna noise, nonlinear effects, mixers, phaselocked loops. Course Information: Prerequisite: ECE 329, credit or concurrent registration in ECE 342. 
Subject Area  Electromagnetics, Optics and Remote Sensing 
Course Prerequisites  Credit or concurrent registration in ECE 342 Credit in ECE 329 
Course Directors 
Steven J Franke

Detailed Description and Outline 
The purpose of this course is to teach senior students in electrical engineering the basic principles of radiofrequency circuit design and to illustrate how such circuits are used in communication systems. Topics:

Computer Usage 
CAD Software (HP Microwave and RF design systems) is used in the laboratory. 
Lab Projects 
Design, construct, match, and test a crystal oscillator and a radiofrequency amplifier operating at approximately 50 MHz; noise measurements; laboratory notebook required; instrumentation: vector impedance meter, spectrum analyzer, network analyzer, synthesizers. 
Lab Equipment 
vector impedance meter, spectrum analyzer, network analyzer, frequency synthesizers. 
Topical Prerequisities 

Texts 
Class notes. 
ABET Category 
Engineering Science: 2 credits or 50% Engineering Design: 2 credits or 50% 
Course Goals 
The goals are to introduce students to circuits and systems employed for radio communication, and to provide an introduction to methods for analysis, design, and experimental measurement and characterization of communication circuits and systems. This course includes a laboratory section. 
Instructional Objectives 
A. By the time of Exam No. 1 (after 19 lectures), the students should be able to do the following:
B. By the time of Exam No. 2 (after 36 lectures), the students should be able to do all of the items listed under A, plus the following: 13. Understand Z, Y, h, ABCD and scattering parameter descriptions of a linear 2port. (a,m) 14. Derive the 2port Z, Y, h, ABCD, or Sparameter matrix for a given network. 15. Derive the 2port parameter matrix for series, parallel, and cascade combinations of subnetworks. (a,m) 16. Measure the scattering parameters of a linear 2port using a Vector Network Analyzer. (a,b,d,g,k,m) 17. Use scattering parameters of a 2port to predict the input and output impedance, and power transfer between arbitrary complex source and load impedances. (a,k,m) 18. Determine if a 2port is unconditionally stable, or not. If not, predict what source and load impedances can lead to instability. (a,k,m) 19. Design a small signal linear amplifier with conjugately matched input and output ports using scattering parameters. (a,c,k,m) 20. Understand the properties of a lossless filter network in terms of the scattering parameters. (a,m) 21. Understand the Butterworth, Chebyshev, Bessel lowpass filter approximations. (a,m) 22. Design a lossless lowpass filter using an LC ladder network and the Butterworth, Chebyshev, or Bessel approximation. (a,c,k) 23. Design a bandpass filter by transforming a lowpass prototype filter. (a,c,k) 24. Understand how to parameterize 2port noise in terms of an effective input temperature. (a,m) 25. Apply Friis' formula to predict the effective input temperature of a cascade of noisy 2ports. (a,k,m) 26. Calculate the effective input temperature of a passive, linear, lossy 2port. (a,k,m) 27. Calculate the signal to noise ratio at the demodulator input given the effective noise temperature of the antenna and the 2ports that comprise the receiver. (a,k,m) 28. Understand the Yfactor method for measuring the effective input temperature of a 2port, including the influence of measurement inaccuracies. (a,m) 29. Measure the Noise Figure of a 2port using an automated Noise Figure Meter. (a,b,d,g,k,m) C. By the time of the Final Examination (after 41 lectures), the students should be able to do all of the items listed under A and B, plus the following: 30. Understand the origin of intermodulation products in a nonlinear 2port. (a,m) 31. Predict the frequencies of intermodulation products at the output of a nonlinear 2port resulting from multiple input tones. (a,k,m) 32. Measure the 1 dB compression level and the twotone thirdorder intercept level for a nonlinear 2port. (a,b,d,g,k,m) 33. Understand the definition of SpuriousFree Dynamic Range (SFDR) and determine SFDR for a receiving system. (a) 34. Understand and analyze the operation of a passive switching mixer implemented using 3winding transformers and diodes. (a) 35. Understand and analyze the operation of active mixers implemented using BJT and MOS transistor switches. (a) 