**No:
EE480**

**Title:** MICROWAVE ENGINEERING I

**Credits:** 4

**Coordinator:** Yasuo Kuga, Professor of
Electrical Engineering

**Goals:** To expose students to microwave
theory, analysis, simulations, and measurements.

**Learning
Objectives:**

At the end of this course, students will be able to:

- Understand transmission line theory and S-parameters
- Understand material properties such as e
_{r}and m_{r} - Understand how to obtain material properties using different techniques
- Understand phenomena caused by high-speed circuits
- Understand time- and frequency-domain techniques
- Understand microwave waveguides
- Understand measurement techniques

**Textbook:**

- D. Pozar,
*Microwave Engineering*, Wiley, 2011, ISBN 978-0-470-63155-3

**References**:

- Lab handout
- Lecture notes

**Prerequisites
by Topic:**

- Basic electromagnetic theory
- Basic transmission line theory

**Topics:**

1. Review: Microwave transmission lines (1 week)

Analysis of microwave circuits using S-parameters

Microstrip TL

2. Electrical properties of materials (2 weeks)

Physical properties

TL formulation (forward problem)

Estimation of dielectric constant from S11 and S21 (inverse problem)

Reflection method and lumped element model

Dielectric constant measurement and inversion techniques

3. Time-domain analysis of TL with complex loads (1 week)

Unit step function signal response

Finite rise-time signal response

4. Time-domain analysis of lossy TL and dispersion effects (1 week)

5. High-speed circuits and signal coupling effects (1 week)

Forward and backward coupled signals on TL

6. Discontinuity in high-frequency and high-speed circuits (1 week)

Parameter extractions

7. Review: TEM, TE, and TM modes on parallel plate waveguides (1 week)

Phase and group velocities

Conductor and dielectric loss

8. Waves on rectangular and circular waveguides (1 week)

Derivation of fields in waveguides and wave mode structures

Bessel differential equations and Bessel functions

Loss in waveguides

Dielectric waveguides and surface waves

9. Special topics (1 week)

RF/Microwave in communication systems

Angle of arrival

Wave propagation in urban and suburban areas

** **

**Course
Structure:**

Lectures are organized so that students can analyze and design microwave circuits assigned in each lab project. The first few weeks cover basic electromagnetic theory in transmission lines and waveguides. Different techniques such as ABCD- and S-parameter approaches are presented to analyze the microwave circuits. Each lab project is designed so that the students are able to apply the theory studied in class to practical problems.

Laboratory projects:

Lab 1 Time- and frequency-domain analysis of a TL model

Implementation of inverse chirp-Z transform

Lab 2 Dielectric constant estimation using transmission method

Forward and inverse problem in EM

Estimation of the dielectric constant from S11 and S21 measurements

Error analysis and ill-posed problem

Lab 3 Dielectric constant estimation using reflection method

Lumped element model and its approximation

Estimation of the dielectric constant from S11 measurement

Error analysis and ill-posed problem

Lab 4 Time- and frequency-domain analysis of unmatched TL

Reflection from inductive, capacitive, and resistive loads.

Reflection from a non-uniform TL

Data analysis using Laplace transform

Lab 5 Coupled noise analysis

Forward and backward coupled noise

Analysis using the circuit model

Final Projects: Some examples are

Analysis of waveguide discontinuity using HFSS

Time-domain simulation model of non-uniform microstrip TL

Design of a microwave stud finder

Implementation of the TRL calibration method

**Computer
Resources:**

- Ansoft HFSS microwave design software on PC

**Laboratory
Resources: **

Vector network analyzer (VNWA)

TEK TDR for the time-domain measurements

**Grading:
**50% midterm and
final exams, 50% lab projects and homework assignments

**Outcome
Coverage:**

(a)* An ability to apply knowledge of mathematics,
science, and engineering.* The majority of the lectures, homework and
projects deal with the application of electromagnetic theory. Mathematical
formulations are commonplace throughout the course. (H)

(b)* An ability to design and conduct experiments, as well
as to analyze and interpret data.* This course uses microwave equipment
which must be calibrated carefully to obtain good results. (H)

(c)
*An ability to design a system, component or process to meet desired needs
within realistic constraints such as economic, environmental, social,
political, ethical, health and safety, manufacturability and sustainability.*
The course materials are organized so that students will be able to analyze and
test microwave devices. Each project will start with a detailed analysis. The
final project will involve a design of a simulation tool. (M)

(d) *An ability to function on multidisciplinary teams. *N/A

(e)
*An ability to identify, formulate and solve engineering problems.* The
lab projects are designed so that students are required to solve problems using
microwave CAD and measurement systems. (M)

(f) *An understanding of professional and ethical
responsibilities. *N/A

(g) *An ability to
communicate effectively**. *Students
must prepare extensive written project reports. They will also be asked to make
an oral presentation of progress. Grades are given for writing quality as well
as technical content of the reports. (M)

(h) *The broad education necessary to understand the
impact of engineering solutions in a global, economic, environmental and
societal context. *Microwave engineering is important for understanding the
functions of wireless devices. Students will be able identify the problems
associated with high-speed and high-frequency devices. (L)

(i) *A recognition of the need for, and an ability to
engage in life-long learning. *The course emphasizes the rapid change in
technologies employed in the microwave industry and a need for the
professional to maintain a state-of-the-art knowledge. (L)

(j) *Knowledge of contemporary issues.* Contemporary
issues discussed include the problems with the current high-speed and
high-frequency devices. (L)

(k)*
An ability to use the techniques, skills and modern engineering tools necessary
for engineering practice.* Students use microwave CAD software (Ansoft HFSS,
PSPICE) and modern microwave measurement systems (network analyzer, TDR). (M)

**Preparer:** Yasuo Kuga

**Date:** 12/5/2012