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ABOUT THE COURSE:This course intends to mold good microwave engineers with a skillset that should encompass strong theoretical knowledge, together with practical-oriented knowledge in passive microwave circuits, devices, and measurement techniques. This course will help you find answers to interesting questions, such as (i) how do transmission lines look and behave in practice? (ii) what does it take to match two circuits? (iii) how do we increase bandwidth of passive microwave circuits? (iv) what microwave circuits are used in practical/industry applications? (v) how are microwave measurements different from low frequency measurements? etc. At the end of the course, you should be able to analyse, design, and recognize the importance of various microwave circuits, devices, and measurements for various applications. This course intends to be a foundation for more advanced courses including solid state microwave devices and circuits, and radio frequency integrated circuits.INTENDED AUDIENCE:Final year B.Tech. (ECE/EE) studentsFirst year M.Tech. (ECE-related) studentsFirst year Ph.D studentsPREREQUISITES: A first course on electromagnetic waves (B.Tech. third year level) is desirable.INDUSTRY SUPPORT:Keysight TechnologiesRohde and SchwarzAstra MicrowaveParas Anti Drone TechnologiesVarious labs in DRDO and ISRO
Syllabus
Week 1:
- L1: Review of transmission line phenomena and impedance transformation
- L2: Standing waves, and the foundations of the Smith Chart
- L3: Practical realizations of transmission lines
- L4: Parametric analysis of practical transmission lines
- L5: Behaviour of transmission lines in time domain
- T1: Problem solving and doubts/discussion
- L6: Introduction to impedance matching, and the quarter wave transformer
- L7: The theory of multiple minima: Equal gamma transformer
- L8: The theory of repeated minima: Butterworth transformer
- L9: Impedance matching using lumped network transformation
- L10: Matching techniques for complex loads
- T2: Problem solving, doubts/discussion, and simulation demo
- L11: Introduction to microwave networks
- L12: Techniques for microwave network analysis
- L13: Lumped element microwave filters – I
- L14: Lumped element microwave filters – II
- L15: Transmission line based microwave filters
- T3: Problem solving, doubts/discussion, and simulation demo
- L16: Introduction to microwave splitters
- L17: Wilkinson splitters and bandwidth considerations
- L18: Planar microwave circulators
- L19: Coupled line directional couplers
- L20: Coupled line directional couplers with increased bandwidth
- L21: Introduction to branch line hybrid couplers
- L22: Branch line hybrid couplers with multiple branches – I
- L23: Branch line hybrid couplers with multiple branches – II
- T4: Problem solving, doubts/discussion, and simulation demo
- L24: Introduction to solid state microwave devices
- L25: Special function diodes for microwave applications
- T5: Problem solving, doubts/discussion, and simulation demo
- L26: Introduction to microwave measurement techniques
- L27: Measurement of S-parameters: Wave separation techniques
- L28: Transmission/reflection and S-parameter network analyzers
- L29: Measurement of S-parameters: Interference techniques
- L30: The six port reflectometer
- T6: Problem solving, doubts/discussion, and simulation demo
Taught by
Prof. Debapratim Ghosh