課程大綱

課程資訊

課程名稱

傳輸線波導與微波電路
TRANSMISSION-LINE MODES AND MICROWAVE CIRCUITS

開課學期

98-1

授課對象

電機資訊學院光電工程學研究所

授課教師

莊晴光

課號

CommE5006

課程識別碼

942EU0170

班次

學分

全/半年

半年

必/選修

選修

上課時間

星期一2,3,4(9:10~12:10)

上課地點

博理114

備註

本課程以英語授課。
總人數上限：50人

Ceiba 課程網頁

http://ceiba.ntu.edu.tw/981TL_mode

課程簡介影片

核心能力關聯

本課程尚未建立核心能力關連

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課程概述

0)tutorial for computer-aided analyses of guiding structures
1)field theory: the fundamentals
2)waveguides: the fundamentals, standard and non-standard eigenvalue problems
3)rectangular, hollow waveguides of metallic enclosures
4)planar transmission lines: modes, modal currents, transverse fields
5)quasi-planar transmission lines: modes, modal currents, transverse fields
6)higher-order modes in planar and quasi-planar transmission lines: complex modes
7)effects of finite conductivity and finite metal thickness on modes
8)coupled-modes approach and the standard eigenvalue approach
9)gyromagnetic waveguides: non-reciprocal devices and consequences
10)leaky modes in planar and quasi-planar structures: circuit consequences
11)waveguide perspective of antenna: leaky modes, excitation, and feeds
12)synthetic waveguide and advanced microwave circuit design approach
13)modes and modal transitions: circuit examples
14)electromagnetic bandgap (EBG) waveguide: case study of UC-PBG circuits, etc.
15)negative index materials and left-hand transmission lines: waveguides and antennas

課程目標

Advance in microwave guiding structures can be generally divided into several eras. First is the hollow waveguides of metallic enclosures that dominated microwave circuit designs before and after World War II. Second is the research and development of planar and quasi-planar waveguides that shaped today’s electronics industry and constituted the backbones of all miniaturized apparatus. This era began in parallel with the development of monolithic integrated circuit industry since the 1950s. In this period of time, full-wave analyses of major bound modes and higher-order modes were explored by many ingenious field-theoretic approaches with better understandings of how various modes worked in almost all guiding structures known to date. The third era quietly began in 1986 and flourished in the 1990s when researchers around the world realized bound modes could leak in the forms of surface waves and /or space waves. The level of complexity in understanding how modes in nearly all guiding structures could leak and how new modes, which were unknown previously, could be verified was far more complicated than people in the second era could imagine. While the third era reached maturity, the fourth era emerged recently. This is the so-called synthetic waveguides, which are more applications-oriented and involve understanding of prior knowledge of modes to truly appreciate the new waveguide designs which often look like textiles with rows and columns of structures that are essentially periodic.
The aim of this course is to offer graduate students the inspirational materials, which may trigger their imaginary and creative minds looking into the interesting and tangled world of waveguides modes, thereby making or inventing better microwave circuits by breaking the impossible which textbooks used to emphasize. Modern software tools are essential to work out problem sets assigned by the lecturer, although emphases will be placed on the physics of modes and how modes are excited in waveguides. The assignments will be given with progressive levels of difficulties, thus grasping nearly fifty-year experience of waveguide development and managing the state-of-the-art waveguide design examples in a one-semester course.

課程要求

預期每週課後學習時數

Office Hours

指定閱讀

參考書目

Textbook: 1)collected papers of IEEE journals
2)Ramo, Whinnery, and Van Duzer, “Fields and waves in communication electronics,” Ch.7-through-14, 3rd edition, John Wiley & Sons, 1994
3)T. Itoh, editor, “Numerical techniques for microwave and millimeter-wave passive structures,” John Wiley & Sons, 1989

Reference Prerequisite:
This course in guided waves and microwave circuit designs is a new attempt in the teaching of applied electromagnetics, suitable for students who at least had taken a two-semester undergraduate electromagnetic course or equivalent and possessed certain level of understanding of microwave circuit and theory usually taught in microwave engineering text books. Those who had completed the advanced electromagnetic course in the graduate school will feel more comfortable with the class materials and assignments, although this is not essential. Skills in scientific programming such as Fortran, C, Excel, and Matlab will be helpful to work on the problem sets in conjunction with the commercial electromagnetic field solver like HFSS from AnSoft.
Grading policy:
60% of scores will be credited to weekly or bi-weekly homework assignments. Midterm and final examinations will each share 20% of final grades. The written examination is in-class and open-note. The grading is to encourage creative minds.

評量方式
(僅供參考)

No.	項目	百分比	說明
1.	期中考	20%
2.	出席	20%
3.	報告	20%
4.	作業	20%
5.	期末考	20%

課程進度

週次	日期	單元主題
第1週	9/15	Lecture 1
第2週	9/21	Lecture 2
第3週	9/29	老師出國開會
第4週	10/06	Lecture 3
第5週	10/13	Lecture 4
第6週	10/20	Lecture 5
第10週	11/16	Lecture 5
第11週	11/24	Lecture 6
第15週	12/22	Lecture 7
第17週	1/05	Lecture 7 8 and supplement Final Exam
第18週	1/12	HW7 HW8 HFSS 模擬參考範例