ENEE 789K: Passive and Low Power Microwave Devices

Course Goals:

Topics will include the analysis of transmission, reflection, and coupling techniques in standard and irregular circular, coaxial, and rectangular waveguides and cavities. Analytic techniques to be discussed include variational methods, scattering matrices, and Telegraphist's equations. The operation of many devices will be evaluated, including mode converters, reflectors, filters, tapers, directional couplers (broadband, overmoded, and tight-coupled), magic tees, attenuators and tuners. Active and passive solid state devices will also be described.

Course Prerequisite:

ENEE 681 or permission of instructor.

References:

1. R. E. Collin, Field Theory of Guided Waves, 2nd Ed., IEEE Press (1990).
2. R. E. Collin, Foundation for Microwave Engineering, 2nd Ed., McGraw-Hill(1992).
3. Sporleder and Unger, Waveguide Tapers, Transitions and Couplers, IEE Electromagnetic Wave Series, Vol. 6, (1988).
4. R. F. Harrington, Time-Harmonic Electromagnetic Fields, McGraw-Hill (1961).

Core Topics:

• Basics: Magnetic sources, waveguide eigenfunctions, general waveguide properties - 2 weeks
• Coupled-wave equations - 1 week
• Spurious modes in gradual transitions: linear, parabolic, DC tapers; mode converters- 2 weeks
• Step transitions: Boundary conditions, mode-coupling matrices- 1 week
• Scattering matrix formulation: analysis; application to open resonators, N-port systems - 3 weeks
• Directional couplers: Bethe coupling coefficients, loose and tight coupling, multihole, cross-guide, and overmoded couplers, mode converters - 2 weeks
• Solid-State Oscillators and Amplifiers - 2 weeks

Optional Topics:

• Variational methods
• Numerical methods (e.g. HFSS)
• Ferrite Devices
• Dielectric Devices

Last Updated:

November 1997, W. Lawson

Information for Spring 98 Semester:

Instructor:	W. Lawson	Web page:	http://www.ee.umd.edu/courses/enee789k
e-mail: 	lawson@gkl	Phone:		405-4972
Office:		AVW 1313	Hours:		By appointment

Course:	MW 2-3:15
Room:	TBD

Course Grades:
     Homework      25%
     Midterm       25%
     Project*      20%
     Final Exam    30%

*The project will be selected by the student and approved by the instructor. It will 
 involve an analytical or numerical solution to any problem related to the class and 
 the student's area of interest.