ADVANCED MICROWAVE ENGINEERING

AIM

The subtitle of this course in Fall 2021 semester is “Microwave Circuit Design with Emphasis on Computational Approach” The goal of this course is to give the graduate students an advanced knowledge on how to analyze the behavior of Microstrip based Microwave Circuits using Computational Electromagnetic techniques. There is a gap between Microwave Circuit Design and Computational Electromagnetic topics. Many Microwave Engineers design their circuits by using commercially available Electro-Magnetic Analysis tools without knowing the details of their solution. This course is intended to bridge this gap. The computational EM technique to be used in this course is based on the Finite Difference Time Domain method. This technique is the base methodology that is used in many commercially available software packages such as CST, EMPro, Feko, XFDTD and CEMS. This class covers principles of high frequency passive circuit design in microstrip technologies using Finite Difference Time Domain computational approach. The frame of the class is as following. - Introduction to Numerical Methods for EM - Finite Difference Approximations and Solutions - Finite Difference Frequency Domain Formulation - Finite Difference Time Domain Formulation - FDTD Examples - Microwave Passive Circuit Design using FDTD: Microstrip transmission lines, Filters, Directional Couples - Microwave Active Circuit Design: using co-simulations with FDTD passive solutions and vendor supplied active component models. Programming capacility in Matlab is essential for this course. Having access to an Nvidia Graphic Card is preferred for faster computations (GPU based).

CONTENT

This course contains; Course Introduction, Signal representations in frequency and time domain, transmission lines,Introduction to Numerical Methods for EM, FD Approximations,Finite Difference (FD) Differential Equation Solution, FD Quasi Static Rect Coordinates,FD Etkili Çözüm ve 2D Düzensiz Izgara, FD Matris Çözümü 1D, FD Matris Çözümü 2D,FD Charge Impedance Capacitance, FD 3D Domain,Zaman Düzleminde Sonlu Farklar Metodu Tanıtımı,FDTD Basic Formulation,FDTD Stability, FDTD Yee Cell Bulding Objects,FDTD Circuit Elements, Source Waveform, S-Paramaters,FDTD İnce Tel Yaklaşımı, Mikroşerit Hattı Yama Anteni,FDTD Near to Far Field Transformation,FDTD Örnekleri,Microwave Passive Circuit Design using FDTD: Microstrip transmission lines, Filters, Directional Couples,FDTD pasif çözümler ve firmalardan temin edilen aktif modellerle ko-simülasyon kullanarak Mikrodalga Aktif Devre Tasarımı.

1. 1

   By the end of the course, students grasp the underlying principles of computational electromagnetics using the Finite Difference Time Domain.

   Taught by: Project Based Learning Model, Simulation Technique, Lecture Method · Assessed by: Homework, Project Task

2. 2

   At the end of the course, students solve various problems by applying the Finite Difference method in Matlab.

   Taught by: Project Based Learning Model, Simulation Technique, Lecture Method · Assessed by: Homework, Project Task

3. 3

   At the end of the course, students write their own MATLAB codes for planar and linear microwave circuit analysis.

   Taught by: Project Based Learning Model, Simulation Technique, Lecture Method · Assessed by: Homework, Project Task

4. 4

   At the end of the course, students study the difference between CPU and GPU usage for computational electromagnetic solution using FDTD by analyzing circuits on the CEMS application.

   Taught by: Project Based Learning Model, Simulation Technique, Lecture Method · Assessed by: Homework, Project Task

5. 5

   Students perform FDTD-based computational electromagnetic analysis on various circuits on the CPU and GPU.

   Taught by: Project Based Learning Model, Simulation Technique, Lecture Method · Assessed by: Homework, Project Task

6. 6

   Students understand the concepts of near field, far field and transformation from near field to far field.

   Taught by: Project Based Learning Model, Simulation Technique, Lecture Method · Assessed by: Homework, Project Task

7. 7

   Students will be able to perform the design of Microwave Passive Circuit Design using FDTD such as Microstrip transmission lines, antennasFilters, Directional Couplers

   Taught by: Project Based Learning Model, Simulation Technique, Lecture Method · Assessed by: Homework, Project Task

8. 8

   Students will be able to perform the design of Microwave Active Circuit Design by combining and co-simulating the FDTD solutions of the passive parts and vendor supplied active models.

   Taught by: Project Based Learning Model, Simulation Technique, Lecture Method · Assessed by: Homework, Project Task

WEEKLY PLAN

1. WEEK 1

   Course Introduction, Signal representations in frequency and time domain, transmission lines

   Preparation: Lecture Notes and Related Book Chapter

2. WEEK 2

   Introduction to Numerical Methods for EM, FD Approximations

   Preparation: Lecture Notes and Related Book Chapter

3. WEEK 3

   Finite Difference (FD) Differential Equation Solution, FD Quasi Static Rect Coordinates

   Preparation: Lecture Notes and Related Book Chapter

4. WEEK 4

   FD Etkili Çözüm ve 2D Düzensiz Izgara, FD Matris Çözümü 1D, FD Matris Çözümü 2D

   Preparation: Lecture Notes and Related Book Chapter

5. WEEK 5

   FD Charge Impedance Capacitance, FD 3D Domain

   Preparation: Lecture Notes and Related Book Chapter

6. WEEK 6

   Zaman Düzleminde Sonlu Farklar Metodu Tanıtımı

   Preparation: Lecture Notes and Related Book Chapter

7. WEEK 7

   FDTD Basic Formulation

   Preparation: Lecture Notes and Related Book Chapter

8. WEEK 8

   FDTD Stability, FDTD Yee Cell Bulding Objects

   Preparation: Lecture Notes and Related Book Chapter

9. WEEK 9

   FDTD Circuit Elements, Source Waveform, S-Paramaters

   Preparation: Lecture Notes and Related Book Chapter

10. WEEK 10

    FDTD İnce Tel Yaklaşımı, Mikroşerit Hattı Yama Anteni

    Preparation: Lecture Notes and Related Book Chapter

11. WEEK 11

    FDTD Near to Far Field Transformation

    Preparation: Lecture Notes and Related Book Chapter

12. WEEK 12

    FDTD Örnekleri

    Preparation: Lecture Notes and Related Book Chapter

13. WEEK 13

    Microwave Passive Circuit Design using FDTD: Microstrip transmission lines, Filters, Directional Couples

    Preparation: Lecture Notes and Related Book Chapter

14. WEEK 14

    FDTD pasif çözümler ve firmalardan temin edilen aktif modellerle ko-simülasyon kullanarak Mikrodalga Aktif Devre Tasarımı

    Preparation: Lecture Notes and Related Book Chapter

ASSESSMENT

• Rate of Midterm Exam to Success50%
• Rate of Final Exam to Success50%

WORKLOAD

READING

• The Finite-Difference Time-Domain Method For Electromagnetics with MATLAB Simulations, Atef Z. Elsherbeni, Veysel Demir, 2016, SciTech Publishing.
• 1) The Finite-Difference Time-Domain Method For Electromagnetics with MATLAB Simulations, Atef Z. Elsherbeni, Veysel Demir, 2016, SciTech Publishing. 2) MATLAB 3) NVidia GPU Card with Computing Capability 5 and higher

TEACHING STAFF

• Assoc.Prof. Hüseyin Şerif SAVCICOORDINATOR
• Assoc.Prof. Hüseyin Şerif SAVCI