ECEG 390
Theory and Applications of Electromagnetics

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Selected Answers to HW #3 (2/23/2026)

The answers to selected graded problems in HW #3 are now available on the Homework Assignments page.

Notes on Real and Reactive Power (2/22/2026)

A set of supplemental notes focusing on how real and reactive power are calculated is now available at the Moodle site in the "Additional Resources" section. The reading is optional and is intended for review purposes. The notes might be helpful if your knowledge of real and reactive power is a bit shaky.

Reading Assignments for Feb. 23–27 (2/22/2026)

• M: Section 2-9 and the last section ("Stub Length") of the supplemental reading "Impedance Matching Using Series and Parallel Transmission Line Elements"
• W: Section 2-9
• R: Section 2-9 and the supplemental reading "Reactive Power Calculations for Loaded Transmission Lines"
• F: Sections 4-1, 6-0, 9-0, and 9-1

Sections 6-0 and 9-0 are the introductions to Chapters 6 and 9, respectively.

You may skim the text in Chapter 9 between Equations (9.2) and (9.7). If you do not completely understand it, don't worry; we will go over a semi-intuitive justification of Equations (9.8), which form the foundation for our coverage of antennas.

Help Sessions for Feb. 23–27 (2/22/2026)

I plan to be available at least at the following times this week.

• Sunday, 9:00–10:00 pm (Zoom)
• Monday, 2:00–3:45 pm (BRKI 368)
• Monday, 9:00–10:00 pm (Zoom)
• Wednesday, 2:00–3:45 pm (BRKI 368)
• Thursday, 4:00–5:00 pm (BRKI 368)
• Thursday, 9:00–10:00 pm (Zoom)
• Friday, 2:00–3:45 pm (BRKI 368)

I will usually be available for short consultations on Mondays, Wednesdays, and Fridays at 4:50 pm in Breakiron 264 or in my office.

Guidelines and additional information:

• Please contact me if you have a conflict with these times and would like to schedule a meeting at a different time.
• The Zoom link is available at the course Moodle site.
• If I am helping another student when you drop by, you may usually join in the conversation.
• If I have been helping you for a relatively long time, I might pause our conversation to help other students who are waiting for assistance.
• For in-person sessions, if I have finished helping you, please move out to the hall or somewhere else so that the chairs in my office are clear for newly arriving students.
• As a courtesy during Zoom sessions, please use your camera.

Help Sessions for Feb. 16–20 - UPDATE (2/18/2026)

I plan to be available at least at the following times this week. There are two changes now that the date and time of the UNIV 213 review session have been confirmed.

• Monday, 2:00–3:45 pm (BRKI 368)
• Monday, 10:00–11:00 pm (Zoom)
• Tuesday, 10:00–11:00 pm (Zoom)
• Wednesday, 2:00–3:45 pm (BRKI 368)
• Wednesday, 10:00–11:00 pm (Zoom) - added
• Thursday, 4:00–5:00 pm (BRKI 368) - new time, now in person
• Friday, 2:00–3:45 pm (BRKI 368)

I will usually be available for short consultations on Mondays, Wednesdays, and Fridays at 4:50 pm in Breakiron 264 or in my office.

Guidelines and additional information:

• Please contact me if you have a conflict with these times and would like to schedule a meeting at a different time.
• The Zoom link is available at the course Moodle site.
• If I am helping another student when you drop by, you may usually join in the conversation.
• If I have been helping you for a relatively long time, I might pause our conversation to help other students who are waiting for assistance.
• For in-person sessions, if I have finished helping you, please move out to the hall or somewhere else so that the chairs in my office are clear for newly arriving students.
• As a courtesy during Zoom sessions, please use your camera.

HW #3 (2/17/2026)

The assignment for HW #3 is now available. It is due via Moodle at 11:59 pm on Monday, February 23.

Reading Assignments for Feb. 16–20 (2/15/2026)

• M: Sections 2-8.5 and 2-11.0
• W: Section 2-11.1 and the supplemental reading "Impedance Matching Using Series and Parallel Transmission Line Elements"
• R: Section 2-11.1 and the supplemental reading "Impedance Matching Using Series and Parallel Transmission Line Elements"
• F: Section 2-9

For Monday's reading, focus on quarter-wave matching sections in Section 2-11.0.

Section 2-11.0 is the introduction to Section 2-11. You may skip all references to the Smith chart in Section 2-11.

The notes on impedance matching are available at the Moodle site in the "Supplemental Readings" section.

Help Sessions for Feb. 8–13 - UPDATE (2/10/2026)

I plan to be available at least at the following times this week:

• Sunday, 10:30–11:30 pm (Zoom)
• Monday, 2:00–3:45 pm (BRKI 368)
• Wednesday, 2:00–3:45 pm (BRKI 368)
• Wednesday, 10:00–11:00 pm (Zoom)
• Thursday, 10:00–11:00 pm (Zoom; time change)
• Friday, 2:00–3:45 pm (BRKI 368)

I will usually be available for short consultations on Mondays, Wednesdays, and Fridays at 4:50 pm in Breakiron 264 or in my office.

Guidelines and additional information:

• Please contact me if you have a conflict with these times and would like to schedule a meeting at a different time.
• The Zoom link is available at the course Moodle site.
• If I am helping another student when you drop by, you may usually join in the conversation.
• If I have been helping you for a relatively long time, I might pause our conversation to help other students who are waiting for assistance.
• For in-person sessions, if I have finished helping you, please move out to the hall or somewhere else so that the chairs in my office are clear for newly arriving students.
• As a courtesy during Zoom sessions, please use your camera.

Table and Formula Sheet (2/9/2026)

A copy of the table and formula sheet that will be made available to you during Exam #1 is now available at the Moodle site in the "Additional Resources" section. Tables 2-1, 2-2, and 2-4 in the textbook are included as well as several potentially useful formulas.

This version is intended to cover at least the first two or three exams, so it contains material that you will not see until later in the semester.

You may use one self-prepared handwritten help sheet during Exam #1 in addition to the table and formula sheet.

HW #2 Solutions (2/9/2026)

The solutions to HW #2 are now available at the course Moodle site.

Review Session for Exam #1 (2/9/2026)

To help you prepare for Exam #1, an optional review session will be offered at 6:00 pm on Wednesday, February 11 in BRKI 165 (the exam room).

During the review session, I plan to answer your questions and/or work through example problems by request. The format of the session is therefore up to you. I strongly suggest that you come prepared with questions to ask.

If you cannot attend the review session but would like to meet with me at some other time before the exam, please contact me.