ECEN 2420: Wireless Electronics for Communication               Spring 2014

Page last updated 10 February 2014

Instructor: Prof. Dejan S. Filipovic

Phone

Email

Office

Lecture Time and Place

Mandatory On-Site HW Time and Place

Office Hours

(303) 735-6319

dejan@colorado.edu

ECOT 243

M/W/F 1-1.50pm; ECEE 1B32

M 4-7pm or W 4-7pm; ECEE 281

M/F: 9.30-10.30am

Assistants: Nathan Jastram (Nathan.jastram@colorado.edu) and Saurabh Sanghai (saurabhsanghai@gmail.com)

Latest Announcements:

31 March 2014: Evaluation of radios will be held on 4-14 and 4-16 (all students must be present to get the grade).

31 March 2014: Third in-class test will be held on 4-23.

31 March 2014: Class project is due on 4-25.

31 March 2014: Final exam is set for 5-6 at 1.30pm in ECEE 1B32.

12 March 2014: Study questions for the second in-class test.

12 March 2014: In-class test is on 3-19

12 March 2014: Extra office-hour on 3-18 from 12 to 1pm.

11 February 2014: Study questions for the first in-class test.

Assignments

On-Site Homework Assignments

Assignment

On-Site Dates

OSH 1
OSH 1 At Home
1-27 and 1-29
OSH 2
OSH 2 At Home
2-3 and 2-5
OSH 32-10 and 2-12
OSH 4 At Home
OSH 4
2-17 and 2-19
OSH 5 At Home
OSH 5
2-24 and 2-26
OSH 63-3 and 3-5
3-10 and 3-12

NorCal 40 A Material – some very important guidelines on how to perform the tasks on-site

Link for LTSpice - some help files and getting started guides

Course Information

General

This course explores fundamental principles behind the operation of a radio, including a practical introduction to circuit elements. The course covers the components and operation of a radio (transmitter and receiver) with simple signals. Students learn through demos the practical basic properties of all needed components with an introduction to principles of operation. 

Prerequisites PHYS 1120, Physics 2, and APPM 1360, Calculus 2 for Engineers.

Textbook

D. B. RutlegeThe Electronics of Radio, Cambridge University Press, 1999, ISBN-13 978-0-521-64645-1.

Other Readings

 

Grades

Your grade for the course will be determined as follows:

On-Site Homework

30%

Three In-Class Tests

10% each

Take Home Project15%

Final Exam

25%

Grade will be assigned according to the following score table:

Cumulative Score

Final Grade

93-100

A

90-92.9

A-

85-89.9

B+

80-84.9

B

75-79.9

B-

70-74.9

C+

65-69.9

C

60-64.9

C-

50-59.9

D

<50

F

On-Site Homework

Homeworks are performed in ECEE 281 every Monday and Wednesday, starting on 1/27/14. Homework assignments are the combination of practical (fabrication) exercises culminating in the assembly of a NorCal 40A radio. Upon completion of the course, you can take completed radio IF you have Amateur Radio License. On-site homework attendance is mandatory. Students will be divided in 14 groups of 3 students. While you are working in groups, your reports will be individual. On-site assignments will be coordinated by graduate students Saurabh Sanghai and Nathan Jastram.

Take - Home Project

Take home project is HF antenna design. Here, you will use a commercially available software to design an antenna you may be able to use for your radio. You will be provided with the tool, and training how to use it. Grade will be based on the  report that needs to be written following the IEEE APS/URSI antenna conference guidelines (2pg, double column).

Tests and Final Exam

Four close-book and close notes in-class (40min) tests and a final exam (2h 30min) will be organized. A calculator that does not have capability to stores formulas is permissable. Tests will be composed of theoretical questions from the lectures, no problem solving. You will be given a list of study questions a week before. About 70% of the quiz’ grade will be from this list. The final exam (2-˝ hours long) will be held in room ECCE 1B32. The final exam will test the complete material. 

If you have 3 or 4 final exams on the same day, you need to see the instructor(s) of the course(s) which have their final exams in the third (and possibly fourth) time slots of that day in a timely manner, to make arrangements to take those exams on a different day in accordance with University rules. The deadline for doing so is April 1st.


The following internet resources are of interest:  

o     http://www.youtube.com/watch?v=I_NU2ruzyc4 -

o    http://www.sparkfun.com/tutorials/213 -

o    http://www.howcast.com/guides/930-How-to-Solder

o    Soldering Guide.pdf

Class Schedule (Projected – some deviations are possible and most importantly – very likely)

#

Topic(s) Covered

Chapter(s)

1

Introduction – course and soldering demo

1

2

Introduction – NorCal 40A and taxonomy

1

3

Superhet Receiver, Resistors

2

 

MLK Day

4

Capacitors, RC circuits, Diodes

2

5

Diodes, inductors, RL circuits

2

6

Phasors, impedances

3

7

Series and parallel resonances

3

8

Filter introduction and tables

5

9

Bandpass filters, crystals

5

10

Impedance inverters, Cohn crystal filter

5

11

Transformers

6

12

Ideal and tuned transformers

6

13

Test 1

1, 2, 3, 5, 6

14

BJT transistors

8

15

Transistor switches

8

16

Common emitter and max efficiency amplifiers

9

17

Gain, IV curves, base resistance

9

18

Emitter degeneration, emitter follower

9

19

Differential amplifier

9

20

FETs

9

21

Introduction to Power Amplifiers (PAs)

10

22

Class C PAs and NorCal 40A PAs

10

23

NorCal 40A PAs

10

24

Thermal modeling

10

25

Antenna Parameters

15

26

Antenna Parameters

15

27

Test 2

6, 8, 9, 10

28

FEKO training session

29

Dipoles

15

 

Spring Break

30

Oscillators, Clapp oscillator

11

31

Variable frequency oscillator, gain limiting

11

32

Crystal oscillators and phase noise

11

33

Mixers and Gilbert cell

12

34

Spurious responses and broad-band receivers

12

35

Key clicks

12

36

Audio amplifiers

13

37

Op amps

13

38

Automatic gain control

13

39

Noise and noise phasors

14

40

Nyquist’s formula

14

41

Test 3

8, 9, 10, 11, 12, 13, 14

42

Attenuator, cascading components

14

43

Intermodulation and dynamic range

14

44

Final exam discussion

 

 

Final Exam

1,2,4,5,6,8,9,10,11,12,13,14,15

Older Announcements

Classroom Behavior

  1. Cell phones and pagers must be turned off before entering the classroom.
  2. If you are late and the classroom door is closed, do not enter the room. 
  3. Questions are encouraged, however, they have to be specific to the lecture / material at hand. Leave other questions for outside the lecture.

Other Polices and Regulations