RF and Microwave Networks

By Prof. Bratin Ghosh   |   IIT Kharagpur
Learners enrolled: 116
The course begins with an introduction to microwave networks. Thereafter, it investigates the basic and general relationships of modal orthogonality in cylindrical guides of arbitrary cross-section. Field expressions and propagation behavior inside such guides are also investigated. Next, the obstacle problem in the waveguide is treated. This is followed by the analysis and network modeling of two waveguide discontinuities : the post and the diaphragm. Thereafter, the waveguide junction problem is investigated with reference to the capacitive and inductive waveguide junctions. The numerical modeling of the waveguide feed is next investigated, with reference to a probe feed in a waveguide. The circuit modeling of apertures excited through waveguides is addressed. Modeling of cavities is undertaken, alongwith determination of the input impedance of a probe-excited cavity and the problem of a waveguide aperture-coupled to a cavity. Treatment of apertures in ground-planes is addressed. Modeling of radiation from a plane current sheet is investigated. Finally, cylindrical waves and their treatment are examined.

INTENDED AUDIENCE: Undergraduate/Post-Graduate students

INDUSTRY SUPPORT: ISRO, DRDO, BEL, SAMEER, Astra Microwave, Qualcomm, Intel, Ansys, Wipro, Keysight Technology, Agilent, Anritsu, WiPL-D, Altair Engineering, Mistral Solutions Pvt. Ltd, Verdant Telemetry and Antenna Systems, Data Patterns, Syratron Technologies Pvt Ltd.
Course Status : Upcoming
Course Type : Elective
Duration : 12 weeks
Start Date : 23 Jan 2023
End Date : 14 Apr 2023
Exam Date : 29 Apr 2023 IST
Enrollment Ends : 30 Jan 2023
Category :
  • Electrical, Electronics and Communications Engineering
Credit Points : 3
Level : Undergraduate/Postgraduate

Page Visits

Course layout

Week 1: The Network Concept : One-Port Network, Two-Port Network, Signal Flow Graph.
Week 2: Cylindrical Waveguides.
Week 3: Modal Expansion in Waveguides.
Week 4: Modal Analysis of Waveguide junctions. Capacitive and Inductive Waveguide junctions.
Week 5: Analysis of Obstacles in Waveguide. Small Obstacles in Waveguide.
Week 6: Posts in Waveguides. Diaphragms in Waveguides.
Week 7: Waveguide Feeds. Currents in Waveguides.
Week 8: Apertures in Ground Planes. Plane Current Sheets.
Week 9: Excitation of Apertures.
Week 10: Modal Expansion in Cavities. Probes in Cavities.
Week 11: Aperture Coupling to Cavities.
Week 12: Wave Interaction with Cylindrical Structures.

Books and references

1. “Time-harmonic Electromagnetic Fields” by Roger F. Harrington
2. “Microwave Engineering” by David M Pozar

Instructor bio

Prof. Bratin Ghosh

IIT Kharagpur
Prof. Bratin Ghosh received his Bachelors in Electronics and Telecommunication Engineering in 1990 from Jadavpur University, Kolkata, Master of Technology in Electronics and Electrical Communication Engineering with specialization in Microwave Engineering in 1994 from the Indian Institute of Technology, Kharagpur and Ph.D. in Applied Electromagnetics in 2002 from the University of Manitoba, Canada. Thereafter, he completed his postdoctoral from the Royal Military College of Canada. He is currently Professor in the Department of Electronics and Electrical Communication Engineering, Indian Institute of Technology, Kharagpur. He is a TPC member and an invited / keynote speaker and chaired sessions in many national and international conferences and seminars. He is also in the review and editorial boards of many international journals. He has been the recipient of many federal project grants in addition to research grants from the industry on the design of efficient antennas and guided systems. He has also organized many short term lectures and workshops in the field of applied electromagnetics that have been well attended by participants from both the academia and industry. He had been the recipient of the National Talent Search Scholarship, the University of Manitoba Graduate Fellowship and is Senior Member, IEEE. He has also been the recipient of many national awards, travel grants and best student paper awards. His areas of research interest are full-wave Green’s function technique for the analysis of cylindrical and spherical multilayer structures, singularity removal techniques, efficient evaluation of Sommerfeld integral tails and leaky and creeping waves in cylindrical structures. He is also actively involved in the design and analysis of efficient horn antenna feeds, metamaterials, dielectric resonator antennas, antenna miniaturization and numerical techniques.

Course certificate

The course is free to enroll and learn from. But if you want a certificate, you have to register and write the proctored exam conducted by us in person at any of the designated exam centres.
The exam is optional for a fee of Rs 1000/- (Rupees one thousand only).
Date and Time of Exams: 29 April 2023 Morning session 9am to 12 noon; Afternoon Session 2pm to 5pm.
Registration url: Announcements will be made when the registration form is open for registrations.
The online registration form has to be filled and the certification exam fee needs to be paid. More details will be made available when the exam registration form is published. If there are any changes, it will be mentioned then.
Please check the form for more details on the cities where the exams will be held, the conditions you agree to when you fill the form etc.


Average assignment score = 25% of average of best 8 assignments out of the total 12 assignments given in the course.
Exam score = 75% of the proctored certification exam score out of 100

Final score = Average assignment score + Exam score

YOU WILL BE ELIGIBLE FOR A CERTIFICATE ONLY IF AVERAGE ASSIGNMENT SCORE >=10/25 AND EXAM SCORE >= 30/75. If one of the 2 criteria is not met, you will not get the certificate even if the Final score >= 40/100.

Certificate will have your name, photograph and the score in the final exam with the breakup.It will have the logos of NPTEL and IIT Kharagpur. It will be e-verifiable at nptel.ac.in/noc.

Only the e-certificate will be made available. Hard copies will not be dispatched.

Once again, thanks for your interest in our online courses and certification. Happy learning.

- NPTEL team

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