ECEN 2420: Wireless Electronics for Communication               Spring 2015

Page last updated 1 April 2015

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: 10-11am; W: 9.30-10.30am

Assistants: Saurabh Sanghai (saurabhsanghai@gmail.com Lead); Ehab Etellisi (Ehab.Etellisi@Colorado.EDU), Elie Tianang (Elie.Tianang@Colorado.EDU), Prathap V. (Prathap.Valaleprasannakumar@Colorado.EDU)

Latest Announcements:

1 April 2015: No in class quiz on 4-8.

1 April 2015: (a) One extra point will be earned by obtaining a 50% score on the Technician exam, (b) total of three extra points will be earned by passing the Technician exam and (c) total of four extra points will be earned by passing theGeneral exam.

1 April 2015: Take-home class project is assigned and is due on 5-1.

31 March 2015: Radio Amateur Test will be held at 7pm on 4-13 in DLC Collaboratory.

Assignments

On-Site Homework Assignments

Assignment

On-Site Dates

OSH 12-2/4
OSH 22-9/11
OSH 32-16/18
OSH 4
OSH 4-at home
2-23/25
OSH 5
OSH 5-at home
3-2/4
OSH 6
3-9/11
OSH 73-16/18
OSH 83-31 and 4-2


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

25%

Take Home Homework

25%

Final Project20%

Three In-Class Tests

10% each

To past the course, students should not receive 0pts on any of the On-site Homeworks, Final project, or Three In-Class Tests.

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 2/2/15. Homework assignments are the combination of practical (fabrication) exercises culminating in the assembly of a NorCal 40A radio. Students will be divided in groups of 4 and each student will be SOLELY responsible for the assembly parts for the 2 assignments. All students must however be present and participate in the fabrication of the radio. Upon completion of the course, you can take completed radio IF you have 'The Genreal" Amateur Radio License (if you show me the proof of passing this test, you will get 3extra points counting toward your final grade). On-site homework attendance is mandatory. While you are working in groups, your reports will be individual. On-site assignments will be coordinated by Dr. Nathan Jastram and graduate student Saurabh Sanghai.

Take-Home Homework

Roughly 7-10 problem solving homeworks will be assigned during the course of the semesters. The homeworks will be assigned on Friday's and will be due next Friday.

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).  Report is due Friday May 1st.

Tests

Three close-book and close notes in-class (40min) tests 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. We will not have a final exam. 


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

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

Radiio Wave Propagation

15

25

Antennas

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 Project Deadline

 

 

Older Announcements

      6 February 2015: On-site homework 2 is assigned

23 January 2015: Take home homework 1 is assigned.

9 January 2015: On-site homeworks will start on 2/2/15 (4-7pm in circuits lab).

8 January 2015: First class is on Mondary 1/12/15.

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