ECE 210/211 - Fall 2018

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Monday, November 12, 2018
Updated HW # 11

An updated version of HW # 11 is online.

It makes problem # 4b more clear. The previous typesetting didn't make it clear what was differentiated and what wasn't.

It also has a new value for the upper integration limit in # 7d, in order to avoid confusion about the inclusion/exclusion of the impulse in the integral.

Thursday, October 25, 2018
Exam 2 logistics

The second exam will be given on Thursday, October 25, 8.45-10pm. Please get there early to receive instructions and get ready.

Students with last names starting with:
Aa - Lj will go to room ECEB 1002
Lk - Nh will go to room ECEB 3017
Ni - Rp will go to room ECEB 2017
Rq - Ts will go to room ECEB 1013
Tt - Zz will go to room ECEB 1015

The exam will cover up to the end of Chapter 6 and homeworks 1-8, except for THD (section 6.3.3). For those of you in ECE 211, if your section covered up until the end of section 6.3.2, then you don't have to go to lecture on Monday anymore.

The exam will be closed book and closed notes (no formula sheets, no cheat sheets, etc.). Calculators will not be allowed during the exam. You will be provided with the Fourier series tables (6.1 and 6.3 from the textbook, or 1-2 from the online handout).

Sunday, October 21, 2018
Updated HW # 8

The figure and wording in problem # 4 of HW # 8 is updated to make it more clear. The main ramp, from t=0 to to t=1, does not change when the period increases, just a gap is created between the end of the ramp and when the next ramp begins. An updated pdf is now posted .

Sunday, September 23, 2018
Exam 1 logistics

The first exam will be given on Thursday, September 27, 8.45-10pm. Please get there early to receive instructions and get ready.

Students with last names starting with:
Aa - Lp will go to room ECEB 1002
Lq - Np will go to room ECEB 2017
Nq - Rz will go to room ECEB 3017
Sa - Tz will go to room ECEB 1013
Ua - Zz will go to room ECEB 1015

The exam will cover up to the end of section 3.4.2 and homeworks 1-4.

The exam will be closed book and closed notes (no formula sheets, no cheat sheets, etc.). Calculators will not be allowed during the exam.

Those of you who have a conflict with this time and were allowed to take the conflict exam should have already received an email with the time/location.

You can find copies of old exams in the course website.

There will be a review session with a TA on Tuesday, September 25, 7-9 p.m., 3013 ECEB, and a review session with HKN on 9/22/2018 in ECEB 1013 from 1pm-3pm.

Friday, September 21, 2018
Lab portion of ECE 210 starts on Oct 1.

The lab syllabus is now available here. Please read it carefully, specially to know when your first lab takes place, when are the labs and prelabs due, and the attendance/late arrival policy.

Notice that labs now start on Oct 1.

Thursday, September 13, 2018
Exam 1 conflicts and reviews

Our first exam will take place on Thursday, September 27, 8.45-10pm. Some of you either have classes, labs, or other exams that overlap with our exam time. We will offer a conflict exam for those of you who are in this situation but you need to get Prof. Alvarez's approval in order to be able to take the conflict exam. If you have a conflict with the exam please email Prof. Alvarez by Thursday, September 20, and include information about the class/lab/exam that conflicts with the exam (include contact information for the corresponding instructor for that course). Also include your schedule for the that week so we can schedule the conflict.

The topics covered in the exam are exactly the ones in the course calendar up until section 3.4.2, which are covered in homeworks 1-4. The exam is closed-book and closed-notes. Electronic devices (calculators, cellphones, pagers, laptops, headphones, etc.) are neither necessary nor permitted.

You can find copies of old exams in the course website.

There will be a review session with a TA on Tuesday, September 25, 7-9 p.m., 3013 ECEB, and a review session with HKN on 9/22/2018 in ECEB 1013 from 1pm-3pm.

Wednesday, September 12, 2018
HW # 3 is posted

HW # 3 is now posted and it is due next Wednesday, September 19 by 6pm.

Wednesday, September 5, 2018
HW # 2 is posted

HW # 2 is now posted and it is due next Wednesday, September 12 by 6pm.

Wednesday, August 29, 2018
Typo in HW # 1

Problem # 1 in HW # 1 had a typo, it used to say "Obtain the current i, the power absorbed by the 2Ω resistor.", when it should have said "Obtain the current i and the power absorbed by the 2Ω resistor." You should obtain both current and power. The online pdf is now updated.

Tuesday, August 28, 2018
HW # 1 is posted

HW # 1 is now posted and it is due next Wednesday, September 5 by 6pm.

Monday, August 20, 2018
Welcome ECE 210/211 students!

To get started with the course, you can start reading carefully this website. You can find information about lecture, office hours, homework, exams, grading, labs, etc. Please check this section for further announcements regularly.

Best wishes for the semester.

Textbook: Kudeki & Munson, Analog Signals and Systems Prentice Hall, 2009. Daily reading assignments are shown in the Course Calendar..
Corrections to the text book (errata)

Useful tables (Fourier series, Fourier transform, convolution, delta function, and Laplace transform)

Additional Notes

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Instructor: Juan Alvarez
example figures
Xu Chen Songbin Gong Stephen Levinson
1013 ECEB
ECE210 AL2
ECE211 C
MTW F 11-11.50 a.m.
ECE210 AL3
ECE211 E
MTW F 12-12.50 p.m.
ECE210 AL4
ECE211 F
MTW F 2-2.50 p.m.
ECE210 AL1
ECE211 B
MTW F 3-3.50 p.m.
Contact: ECEB 3046
ECEB 3062
MNTL 2264
ECEB 3048

TA's: Michael Collins, Molly Dasso, Grant Greenberg, Sarah Shim, Binghui Wang, Yulun Wu, Shiyi Yang.

For questions on homework, labs, Compass grades and website please contact the TA in charge :

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Faculty and TA Office Hours (Sept. 4 - Dec. 12):
Open office hours
Office hours strictly for small study sessions (need to sign up in order to attend). See more info below the table.
Hrs. Monday
ECEB 3015
ECEB 3015
ECEB 3015
9-10am Sarah Shim
3034 ECEB
Sarah Shim
3034 ECEB
10-11am Songbin Gong
3034 ECEB
Juan Alvarez
3034 ECEB
11am-12pm Xu Chen
3062 ECEB
Steve Levinson
3034 ECEB
Xu Chen
3034 ECEB
12-1pm Michael Collins
3034 ECEB
1-2pm Binghui Wang
3034 ECEB
2-3pm Binghui Wang
3034 ECEB
3-4pm Juan Alvarez
Yulun Wu
Steve Levinson
Yulun Wu
Grant Greenberg
Molly Dasso
Binghui Wang
3034 ECEB
4-5pm Molly Dasso
Sarah Shim
Shiyi Yang
Yulun Wu
Songbin Gong
Sarah Shim
Shiyi Yang
3034 ECEB
Binghui Wang
5034 ECEB
5-6pm Shiyi Yang
Grant Greenberg
Yulun Wu
Michael COllins
Shiyi Yang
Grant Greenberg
Michael Collins
3034 ECEB
Molly Dasso
5034 ECEB

Open office hours

Office hours on Monday, Tuesday and Wednesday are open hours where all types of questions are allowed, and we have found that students mostly use them to ask about the upcoming homework.

Small study session office hours

We now also have additional office hours each week of support for you by having small study sessions with course staff members to answer conceptual questions, provide additional examples, etc. but nothing related to that week's HW.

These sessions will be available on Thursdays and Fridays by signing up via this online form using your Google Apps @ Illinois account.

The sign up is voluntary but we do expect your attendance and participation if you do sign up for a slot. Due to limited space, more than one missed attendance will deduct one point from your final grade and prevent you from signing up for the remainder of the semester.

You can signup or remove yourself from the timeslot at any time before 6pm on Wednesday of the corresponding week.
The signup will reopen during the weekend to sign up or unregister for the following week.

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Labs (only ECE 210 students):

Five bi-weekly laboratory assignments will be given, beginning on October 1. More information about the labs is available at the following link: Lab Syllabus and Assignments

Lab Times (4072 ECEB) (Oct 1 - Dec. 10):
Hrs. Monday Tuesday Wednesday Thursday Friday
10am-12pm AB1
Sarah Shim
Sarah Shim
12-2pm AB3
Yulun Wu
Yulun Wu
2-3pm AB5
Molly Dasso
Sarah Shim
Open lab
Sarah Shim
4-5pm AB7
Yulun Wu
Yulun Wu
Open lab
Grant Greenberg
5-6pm Open lab
Michael Collins
6-8pm AB9
Shiyi Yang
Shiyi Yang
Binghui Wang
Binghui Wang
Shiyi Yang

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About the course

ECE 210 is the first mathematically oriented course in the electrical and computer engineering curricula. The course begins by building on the circuit analysis concepts you learned in ECE 110 and then progresses into the more abstract world of Fourier and Laplace transforms. Much of what we will do will rely on your background in calculus. Our goal will be to apply mathematical tools to the analysis and design of signal processing systems, culminating in a thorough understanding of an AM radio receiver and the ability to design simple filters. ECE 210 deals with the processing of continuous-time, or analog signals. The follow-on course, ECE 310, covers the processing of sampled, or digital signals.

ECE 210 course description
ECE 210 class schedule

ECE 211 is the first half of ECE 210. Students in ECE 211 should attend lectures approximately through Friday, October 19 (Chapters 1 through 6 in the course textbook).

ECE 211 course description
ECE 211 class schedule

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Exams will be combined for all sections of ECE 210 and 211.
ECE 210 students will take three evening tests and a final exam.
ECE 211 students will take just the first two tests. The second test will serve as the final exam for ECE 211 students.
To compensate for the evening tests, class will be canceled on the next day after each test.

  • Exam 1:
    • Thursday, September 27, 8:45-10 p.m.
    • Review: Tuesday, September 25, 7-9 p.m., 3013 ECEB.
    • HKN Review: 9/22/2018 in ECEB 1013 from 1pm-3pm.
    • Exam, solutions
  • Exam 2:
    • Thursday, October 25, 8:45-10 p.m.
    • Review: Tuesday, October 23, 7-9 p.m., 3013 ECEB.
    • HKN Review: 10/20/2018 in ECEB 1013 from 4pm-6pm.
    • Exam, solutions
  • Exam 3:
    • Thursday, November 29, 8:45-10 p.m.
    • Review: Tuesday, November 27, 7-9 p.m., 3013 ECEB.
    • HKN Review: Monday November 26th from 6PM-8PM in ECEB 1015.
  • Final Exam:
    • Saturday, December 15, 1.30-4.30p.m.
    • Review: Wednesday, Dec, 12, 7-9 p.m., 3013 ECEB.
All exams will be closed book, closed notes. Calculators, laptop computers, cell phones, tables of integrals, etc. are neither necessary nor permitted. Electronic devices of any sort such as calculators, laptops, PDAs, cellphones, pagers, iPods or other MP3 players etc. are not permitted.

Absences from Hour Exams:

If you miss an hour exam due to illness, injury, family emergency or other reasons beyond your control, you will be asked to provide your professor with an absence letter from the Student Assistance Center in the Office of the Dean of Students. Documentation which validates the absence is required by the Dean's Office to provide the absence letter. The absence letter will serve to verify the reason for your absence from the exam. Your ECE 210 professor will then take an appropriate action that may include offering an oral examination or written examination.


If when you receive your graded exam, and after looking at the posted solutions, you feel there was an inaccuracy in the grading of your exam, fill out this exam regrade request form and staple it to your exam BUT do not write on or alter in any way your original exam paper. Turn in such regrade requests, by the deadline given in the email sent out by the course coordinator, in the ECE 210/211 Exam Regrade box (not the HW regrade box) located on the northwest corner of the 3rd floor of ECEB, next to the service elevator. If you pick it up late you do not get an extension.

Old Exams

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Grading scheme:
Grading for ECE 210:
3 Midterm exams........ 45%
Final Exam................... 30%
Written HW.................. 15%
Labs.............................. 10%
Grading for ECE 211:
1 Midterm exam........ 35%
Exam 2 (final)............. 45%
Written HW................. 20%
You can check your grades in Illinois Compass 2g

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Written assignments will be made weekly on the link "Homework Assignments and Solutions" and will be due on Wednesdays at 6 p.m. in the homework boxes located on the northwest corner of the 3rd floor of ECEB, next to the service elevator.
The lowest homework mark will be dropped for 211 students and the lowest two homework marks will be dropped for 210 students.
You can check your homework marks on Illinois Compass 2g.

Homework format: The HW solution should be readable, clearly written. In the case it isn't, students will be penalized with reduction of points or zero credits (see policy below). The header should be in a format, left side up corner: course number, section, and semester; right side up corner: student name and netID; and in the middle HW1,2, etc. See the following picture as an example:

Homework Policy:

  1. Written assignments are due every Wednesday at 6 p.m. in the homework boxes located on the northwest corner of the 3rd floor of ECEB, next to the service elevator. Late homework (even by a minute) will receive no credit. Each section has its own box.

  2. When you submit your homework, be sure that your name, section, and NetID are printed neatly at the top of the page. This will ensure that your score is recorded correctly. Note that your NetID is not your UIN. If you fail to write your section, you will lose 10% of the total allocated score for that assignment. Homeworks with missing or illegible name and netID will be deducted 50% of the allocated score.

  3. All homework must be stapled. If you fail to staple your homework, you will lose 10% of the total allocated score. If you fail to staple and your pages become lost only the pages with your name on them will be graded. There is a stapler in undergrad lounge and the advising office.

  4. As the semester goes on, you may find that you attend a different lecture than you are enrolled in. If you want to get back your HW from the section that you are attending, you can submit your homework to the box corresponding to the lecture you actually attend. When using this option, you must make a note saying "Enrolled in ALX, Please return to ALZ". Otherwise, 10% of the total allocated score will be deducted.

  5. Make sure that your HW is neat enough to read. Graders has the flexibility to deduct up to 20% for lack of neatness. Doing things like boxing your answers, showing ALL of your work, and generally making it easier for the graders to grade will overall increase your scores on HW.

  6. Homework assignments in ECE 210 constitute an essential component of your learning experience in the course and prepare you for your mid-term 'hour exams’ and the end-of-semester ‘final exam’ in most effective ways — investing time to do your homework with care will pay off when you are taking your exams.
    You will be expected to provide detailed explanations of your solutions in order to obtain full credit in your homework assignments. Conversely, solutions lacking full explanations will receive zero credit even when the answer provided may be correct and furthermore incorrect answers without any work shown may lead to 'academic integrity violation' cases being opened against you. Some of the homework problems you will be assigned will resemble problems from previous semesters but with modified parameters and/or inputs. Your comprehensive homework solutions will naturally be expected to match the versions of the problems assigned during the current semester, whereas solutions or answers matching the versions from previous semesters will once again lead to 'academic integrity violation' cases being brought against you.
    Please keep these cautionary remarks in mind as you are working out your homework assignments and avoid submitting unsubstantiated solutions to avoid any misinterpretations as explained above.

  7. If you miss lecture on the day that assignments are handed back, they will be kept in the card box next to the wooden cabinet in 3030.

  8. Regarding regrades: if you want to request a regrade for your assignment, you must do so within a week of getting your assignment back. The regraded assignments will be returned with the assignment due the coming Wed after you submitted your regrade. To request a regrade, on a separate piece of paper, write which problem you would like regraded as well as why you think it is correct. Staple this paper to your assignment and then turn it in to the regrade requests box, located on the northwest corner of the 3rd floor of ECEB, next to the service elevator.

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See informational handout here.

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Tentative course schedule for ECE 210/211 - Fall 2018

Monday Tuesday Wednesday Thursday Friday
Aug. 27
Introduction & voltage, current power, KVL, KCL 0, 1.1-2
Aug. 28
Elements, sources, solutions of circuit problems, 1.3
Aug. 29
Complex numbers review 1.4, App. C, Resistor combinations 2.1
Aug. 30
Aug. 31
Source combinations, node voltage method 2.1-2
Sept. 3

Labor day
Sept. 4
Node voltage method 2.2
Sept. 5
Loop current method 2.3
Sept. 6
Sept. 7
Linearity & superposition 2.4
Sept. 10
Thevenin & Norton 2.4
Sept. 11
Available power & max power transfer 2.5
Sept. 12
Op-amps & ideal op-amp approximations 3.1
Sept. 13
Sept. 14
Linear op-amp ckts 3.1
Sept. 17
Differentiators & integrators 3.2
Sept. 18
Introduction to LTI systems 3.3
Sept. 19
1st order RC ckt response to constant inputs 3.4.1
Sept. 20
Sept. 21
RC & RL ckts with constant inputs 3.4.1-2
Sept. 24
RC & RL ckts with time-varying inputs 3.4.3
Sept. 25
Transient & steady-state response in LTI systems 3.4.3, 3.5
Sept. 26
Phasors & sinusoidal SS solutions of linear ODEs 4.1.1-2
Sept. 27
Midterm Exam I
Sept. 28
Oct. 1
Impedance & phasors in sinusoidal steady state ckts 4.1.3, 4.2.1
Lab 1
Oct. 2
Post-review of Exam I
Oct. 3
Phasor ckt analysis 4.2.2-3
Oct. 4
Oct. 5
Avg and available power 4.3
Oct. 8
Resonance 4.4
Oct. 9
Frequency response of dissipative LTI systems 5.1-2
Oct. 10
LTI system response to co-sinusoids & multi-frequency inputs 5.3-5
Oct. 11
Oct. 12
Periodic signals 6.1
Oct. 15
Fourier series & its forms 6.2
Lab 2
Oct. 16
Fourier series examples 6.2
Oct. 17
LTI system response to periodic inputs 6.3.1
Oct. 18
Oct. 19
Avg signal power, Parseval's thm, harmonic distortion 6.3.2-3
Last day for ECE 211
Oct. 22
Fourier transform of aperiodic signals 7.1
Oct. 23
Fourier transform pairs and properties of FT 7.1
Oct. 24
Signal energy and bandwidth 7.2
Oct. 25
Midterm Exam II
Oct. 26
Oct. 29
LTI system response using FT 7.3
Lab 3
Oct. 30
Modulation property, AM signal, coherent demodulation 8.1-2
Oct 31
Envelope detection, superhet AM receiver 8.3-4
Nov. 1
Nov 2
Post-review of Exam II
Nov. 5
Convolution & FT convolution properties 9.1.1-2
Nov. 6
Graphical convolution 9.1.3
Nov. 7
Convolution examples 9.1.3
Nov. 8
Nov. 9
Impulse & its properties 9.2
Nov. 12
FT of power signals 9.2-3
Lab 4
Nov. 13
Sampling & analog signal reconstruction 9.4
Nov. 14
Impulse response & BIBO stability 10.1-2
Nov. 15
Nov. 16
Causality & LTIC systems 10.3-5
Nov. 19
Thanksgiving break
Nov. 20
Thanksgiving break
Nov. 21
Thanksgiving break
Nov. 22
Thanksgiving break
Nov. 23
Thanksgiving break
Nov. 26
Transfer function & Laplace transform 11.1
Nov. 27
Properties of LT 11.1
Nov. 28
Inverse Laplace transform & PFE 11.2
Nov. 29
Midterm Exam III
Nov. 30
Dec. 3
s-domain ckt analysis, general response of LTIC systems 11.3, 11.4.1
Lab 5
Dec. 4
Post-review of Exam III
Dec. 5
Zero-input response in LTIC ckts & systems 11.4.1-2
Dec. 6
Dec. 7
Ckt initial value problems 11.4.3
Dec. 10
LTIC system combinations 11.5
Dec. 11
Ideal filters, 2nd order systems, 12.1-2
Dec. 12
Dec. 13
Reading Day
Dec. 14

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