Notes 1 Introduction

1. ECE 3317 Prof. D. R. Wilton Notes 1 Introduction D. R. Wilton Adapted from notes by Prof. Stuart A. Long

2. Motivation: Most basic of all ECE courses: Electromagnetics (EM) provides the foundation for all electrical sciences and engineering. All of circuit theory is a special case (low frequency, where dimensions are small relative to a wavelength). Electromagnetics explains physical phenomena: What is light? How do electric and magnetic fields behave? Important to know about EM: Extremely important for areas such as antenna design, microwave engineering, RF design. Also very important for power engineering and microelectronics. It is useful for all areas of ECE, and all areas of ECE impact EM.

3. Applications Applied Electromagnetics: Antennas, Radar; Microwaves; RF circuits. Wireless Communications: Cell phones; Bluetooth; Wireless routers; Cordless handsets; RFIDs.

4. Applications (cont.) Computer and Electronic Applications: Electromagnetic Compatibility (EMC); and Electromagnetic Interference (EMI). At higher frequencies inference issues become more important. It becomes necessary to model the electromagnetic performance of the system (simple circuit theory no longer adequate). Traces omodeled as otransmission olines

5. Applications (cont.) In ECE 2317, you became familiar with staticfields. You also became familiar with vector calculus. In ECE 3317, we will deal with time-varying fields. Note: Most practical devices use time-varying fields (antennas, electronics, computers, etc.) • EM analysis typically involves fields that vary in both space and time (frequency). Complex EM problems are usually attacked by reducing them to • circuit theory, if applicable; if not then … • transmission line theory, if applicable; if not then … • plane wave or waveguide theory, if applicable; if not then … • analytical solution of Maxwell’s equations, if applicable; if not then … • full-wave numerical solution of Maxwell’s equations if none • of the above are applicable

6. Announcements • Homework is normally assigned about once per week. It is due at the beginning of class on the due date. • Late homework is generally not accepted. • Homework will be distributed via the class website. • All important announcements will be placed on the class website (in the “Important Announcements” section). It is your responsibility to check this often. • Email addresses should be kept current so that you may be contacted quickly.

7. Announcements (cont) • It is a course policy that you must work on the homework completely by yourself. Any violation of this will be considered a violation of the UH Academic Honesty Policy, and this will be strictly enforced. See course syllabus for Academic Honesty forms to sign and return.

8. Announcements (cont) • Class attendance may be taken at any time. If you miss three classes you may be dropped or fail the class.

9. Announcements (cont) • All materials for the class will be distributed via the class website: http://www.egr.uh.edu/courses/ece/ece3317/SectionWilton/web/welcome.html • The class notes will be placed on the class website as PDF files. • Notes for each lecture will usually appear in advance of the lecture, but final versions with corrections and/or additions will appear after the lecture. You are responsible for all material in both the notes and the text. • The class notes will be placed on the class website as PDF files. • The class text is Shen and Kong’s Applied Electromagnetism, 3rd Ed., PWS Press

10. Announcements (cont) • For information on policies regarding academic honesty, makeup exams, religious holidays, disability accomodations, course grading, important dates, etc. see the course syllabus online. • The TA for the course is Meng Jin. Phone: 713-743-4481 Email: mjin@uh.edu Office: W332, D3 Office hours: 2:00-3:00 PM MW