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National Institute of Technology, Trichy

Click here to go to our main page on microwave colleges

NITT is located in Tiruchirappalli, India (in the state of Tamil Nadu) , a city of over one million people commonly known as Trichy. They've been very generous, creating and contributing a number of cool tools to Microwaves101. We've also listed the NITT events further down on this page - if you're ever in their neighborhood, stop by for a visit!

Dr. S. Raghavan of NITT has been a contributor to Microwaves101, with regard to finline. He also holds the distinctions of being the final Ph.D. scholar of Prof. B. Bhat and being a Senior Professor at NITT. Here is his contact information and qualifications. His interests include microwave integrated circuits,  biological effects of microwaves, computer-aided design, and metamaterials. He is a Fellow or Senior Member of 18 technical societies. 

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Dr. S. Raghavan of NITT

Check out the NITT website at Electronics and Communications Engineering Department. Here is an article of Microwave Engineering Made Easy, which describes the NITT educational experience.

NITT Contributions

New for October 2021: Sandeep Reddy Pulakunta, a Mtech student at NIT Trichy, has created MATLAB plots for different types of Smith Charts.

Image of 3D Smith Chart:

3D Smith Chart

Image of compressed Smith Chart:

compressed smith chart

Sandeep has also plotted a Thank You note for Microwave 101 using Smith Charts with centers shifted:

 

Sandeep Image <- Sandeep Reddy 

New for May 2021: A research scholar from NITT, DrV KRUSHNA KANTH participated in a DRDO dare to dream innovation contest, winning the FIRST prize amongst 3000 applicants. The details of the contest can be found here. Nowadays, defense technology mainly focuses on the strategic and stealth sectors. The modern aircraft which belong to class 5 and class 6 are advanced warfare vehicles. These aircraft are the game changers of modern-day wars. The radar systems used in this modern aircraft are more sophisticated and need extreme protection from the detection of enemy radars. In this regard, Dr. V KRUSHNAKANTH and Dr. S RAGHAVAN, ("MICROWAVE INTEGRATED CIRCUIT" LIFETIME ACHIEVEMENT AWARD WINNER) proposed a frequency selective radome to protect the radar system. The proposed radome helps in making our targets invisible to the enemy radars and protects the aircraft from firing. 

In the above image (Right to Left): Air Chief Marshal Rakesh Kumar Singh Bhadauria, The Chief of the Naval Staff Admiral Karambir Singh, The award winner, V Krushna Kanth, Dr. G Satheesh Reddy, Secretary, Department of Defence R&D and Chairman, DRDO, Minister of Defence (India) Rajnath Singh, The National Security Advisor and the chief adviser to the Prime Minister of India on national security policy Ajit Doval, and Chief of the Army Staff (India) General Bipin Rawat.

MICROWAVE ENGINEERING APPLICATION in HEALTH CARE 

"ENGINEERING Doctor SNEHA BALAN" - Dreamt to become a Practical Biomedical Engineer, Worked for it, and achieved global recognition.

Catch a glimpse of her work in the section - "NITT Events related to Microwave Engineering"

New for March 2021: Two undergraduate students of NITT, Sai Mitheran and Ram (under the supervision of Dr. Raghavan) have done a unique project based on E and H field visualisation inside a waveguide for different modes of operation. This was done using pure python code without the help of any commercial software. The project is one of its kind with it's intuitive graphical user interface which anyone can play around with. This work will make every student love EM fields which otherwise is considered a nightmare.

Link for project:  https://wg-visualiser.herokuapp.com/

Link for report:  Documentation of Waveguide-Visualiser 

A Glimpse of the work:

TE -11 RECTANGULAR TE-11 Mode visualised in Rectangular waveguide
TM-11 Circular TM-11 Mode visualised in Circular waveguide

 

Contributors:

Sai Mitheran Sai Mitheran, 3rd year student of NIT Trichy
Ram, 3rd year student of NIT Trichy

 

 

New for January 2021! Once again, students at NITT have thoughtfully provided us with the results of their work. Unless specified otherwise, all projects were completed under the direction of Dr. S. Raghavan. 

Alok TJ presents A 3-D Wheelers Curve.  The Wheeler’s curve calculates microstrip impedance from paramaters w/h (width divided by height) and diectric constant.  It is plotted by merging two curves from either side of the point of discontinuity  where w/h=1, and then plotted on one graph for complete range of (w/h) values. From the Wheeler’s Curve Plot, corresponding values of Impedance and (w/h) on the curve is taken with uniform linear separation and made into a tabular column for each standard dielectric substrate. All the values obtained from the Wheeler’s curve are consolidated in a single chart for Microstrip line designers, and presented (for the first time that we know of!) as a 3D surface plot.
RS Anju sent us some coplanar waveguide characteristic curves, helpful in determining the width and spacing for any dielectric at any frequency. (You may also want to download the python code used to create these plots). 
A Windows application that designs Stepped-Impedance Low Pass Filters using Python by Debrup Mukherjee. This paper describes how to create your own application that takes the filter specifications as input and designs the complete layout by itself. All we need to have is a good understanding of how microwave filters work and what are the steps taken by an experienced designer to design the layout. The way an experienced designer designs filters, the same way the process can be automated and make a computer do all the calculations and all the hard work for us. The software, that we will learn to write in this page takes care of everything and gives us the complete layout with all the dimensions.
Sumadhara Gunupati shared a paper on "Magical Lambda" - It has it's own Microwaves101 page! 

Govardhan has written a Generalized Python program that can calculate:

1.Effective ABCD Parameters of any M.I.C Components and then find out it's equivalent S-Parameters.

2. Starting from 2-stub branch-line coupler, it will compute 3 stub branch-line coupler, Hybrid Ring, Rat race.

3.Will compute the design parameters of stub branch-line couplers and hybrid ring for any coupling coefficient.

4. Indirectly it will obtain the Overall ABCD parameters and then the S-matrix

Ekansh Bharadwaj has created a Generalized Filter M.I.C.design starting from Binomial and Equal ripple filter coefficients. 

The uniqueness of this project is that it is a Standalone application made in MATLAB 2020a. There is no need to install MATLAB to run this application. If anyone wants to install it, he/she can install it without any problem, it will run perfectly. This application is able to Design a Low pass filter using an unconventional method of software usage provided coefficient to design a filter. He has also used Richard's transformation and Kuroda's identity to design this low pass filter step-wise.

Ekansh Bhardwaj dedicated his work to Dr. S RAGHAVAN, the LIFETIME AWARD winner in MICROWAVE INTEGRATED CIRCUITS.


Thank you to all these students for their detailed and creative work, and to Dr. S. Raghavan for sharing it with us and promoting the site.

AUGUST 2018: Professor Muthu Ramya is interested in microwave research, and she also an artist.  Check out some of her work over on her blog! 

Here are some MORE presentations in pdf format by NITT students on microwave topics for you to download:

Reconfigurable scan-beam single-arm spiral antenna integrated with RF MEMS switches by B.Sravanthi (M.Tech)

RFMEMS Filter by Durai Praveen and Gautham Muthukumar (B.Tech)

IDEA-improved simulation software by Sudha Rani Agarwal (B Tech, 6 semester, ECE)

Here is a description of a project that NITT performed for a Smith Chart tool, just one example of what students at NITT ECE are doing. Much of the credit goes to Mr. Arpit Raj, who was in his final year Electronics and Communication Engineering in 2010. He is a web team member of the college and contributed to the Microwave Engineering Made Easy article as well.

National Institute of Technology, Trichy

Update March 2016: In the microwave world, we are always looking for interactive ways to play around on the Smith chart.  In the document below, Bharath Krishna shows how to create a Smith Chart in Java.

Interactive Smith Chart in Java

New for October 2013: NITT student Lakshmi Nairhas contributed a transmission line calculator. Read about it here. Thanks!

New for March 2013: check out Dr. Raghavan and Prof Suganthi's poster on Women in Microwaves!

NITT Events related to Microwave Engineering

May 2021: 

Krushna Kanth V  His research work is on the advanced frequency-selective radome with superior electromagnetic performance characteristics. He won the first prize in the DRDO dare to dream innovation contest. To read more about his fascinating and award-winning work which was appreciated at the national level, you can find the proposal here.

Sneha Balan – Biomedical frontline worker in Healthcare and during Covid-19. She is working in the Healthcare industry in the Middle East, She has the opportunity to bring out technical advancements and associate herself in the Medical domain on a day-to-day basis. As a Biomedical solution designer, she was involved in several projects during critical and recent times (mainly in the Kingdom of Bahrain), which can be found here.

March 2021:  A pen sketch of Sir JC Bose who is the father of Millimeter-wave and Radio science is done by Karri Sri Siddhi, a 3rd-year student of NIT Trichy, ECE department.

May 2019: The Department of Electronics and Communication Engineering of National Institute of Technology Tiruchirappalli, one of the prominent Engineering Institutions in India, takes immense pleasure in organizing an International Conference on Microwave Integrated Circuits, Photonics and Wireless Networks (IMICPW-2019). This conference will provide a forum for academic researchers, practicing engineers, and industry experts to present and discuss their recent work, technical advancements, and new products. The main objective of IEEE IMICPW-2019 is to provide a platform for the community of researchers and practicing engineers to meet and present their latest technical achievements in microwave and RF components, circuits & systems, photonics, and wireless networks. For more info, see the IMICPW website.

July 2018: Dr S. Raghavan writes to tell us about one of the attendees of his recent workshop.  "ONE LADY MICROWAVE PROFESSOR, MUTHU RAMYA has a wonderful unbelievable CRAFTS @ ARTS hobby. Will you be interested to post the same in NITT WEBSITE of MICROWAVE 101. She attended the 'MICROWAVE WORKSHOP'conducted by me in NITT . She teaches MICROWAVES in a near by Engineering college."  We're happy to help, sir!  The website is www.craftoframya.blogspot.com
 

June 2018: ITT Workshop on CAD of Microwave Integrated Circuits, 9 - 10 June 2018, Tiruchirappalli, India

The objective of the course is to impart in-depth knowledge in the Computer-aided design of Microwave components including antennae through the conventional coding (MATLAB). The highlight of the workshop is to compare the joy and originality of getting the solution through conventional coding with that of commercial software tools (ADS, HFSS, CST MWS, COMSOL, etc.). Each has got its own exclusive merits and demerits. The demonstrations will speak of the above claim. Eligibility: The programme is open to the Research Scholars, UG, PG, faculty members, and Industry persons, to get exposed to the state-of-art design of MICs.

Important note: deadline to apply is June 6, 2018! CAD of Microwave Workshop

Update November 2015: Join NITT faculty and students for a conference entitled "Microwaves Through Software" at NIT Tiruchirappalli (Trichy) on November 6th and 7th, 2015. Read the brochure below:

Microwaves Through Software Workshop (6-7 November 2015)

Here is a "electronic souvenir" from the MTS conference that provides a summary, worth a look if you were there or not:

E-Souvenir_from MTS_2015

New for August 2015: an update from Dr. Raghavan on his microwave students and sad news from India.

Below, the MICROWAVE Group of National Institute of Technology Trichy, India has paid respects to the Space scientist Dr.A.P.J.Abdul Kalam in an unique way. To make his coat appear as natural as it was during his last speech in Indian Institute Of Management (IIM), Shillong, the students used tea powder in the floral decoration. He was the Project Director of SLV_3 in 1980 and had a keen interest in MICROWAVE Engineering.

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You have to dream before your dreams can come true.

Dr. A. P. J. Abdul Kalam died on July 27,2015. He served as president of India from 2002 to 2007.  He was a first a scientist, and became a politician later. Over 100,000 people attended his services. He wrote 17 books, including an autobiography you should consider reading to learn more about his life.

New for September 2014: a recent lecture was given by Ms. Seema R. Tirky (first year post graduate) to bring awareness of Microwaves101 web site to other students. Thanks for spreading the word, we hope that Microwaves101 lives up to your expectations! Click the images for higher resolution photographs. On the right, the electronics and communication engineering association office bearers of 2014 are shown.

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Also during this month, Microwaves101 offers congratulations to the Indian Mars Orbiter Mission Mangalyaan, that entered orbit on 24 September 2014. Bravo!

Here are some words from NITT regarding this historic mission:

Microwave Group of NITT celebrated the proud victory of Mars Orbiter Mission

All health parameters of the Mars Orbiter Mission (MOM) are normal and the its performance will be as per the computed time” said the proud scientist and the project Director of MOM S. Arunan few days before in NITT during his talk to the Electronics and Communication Engineering association students. His words came true when the whole world witnessed Indian Space Scientists' latest space marvel Mangalyan being put in orbit around Mars at the very first attempt. Along with the whole country, the Microwave group, are jubilant for many reasons. Starting from N. Valarmathi. the Project Director of Radar Image Satellite (RiSAT), P.K. Anuradha, the Project Director of GSAT 12 and finally MOM Project Director Arunan had inspired every student of the department to aspire to become space scientists. The Microwave group headed by Dr. S. Raghavan, Professor, and the ECE department celebrated with great joy and satisfaction.  The scholars and the students had designed the colorful model of the MOM in the form of rangoli. Microwave Engineering has played an active role in the mission. One of the present scholars of the Microwave group, Mr.S. Purusothaman is from the Compact Antenna Test Facility (CATF) of ISRO, Bangalore where High Gain Antenna of Mars mission was exclusively tested for the radiation pattern, gain polarization and isolation before integrating with MARS space craft. The communication systems for the Mars mission are responsible for the challenging task of communication management up to a distance of 400 million km. One student Nitesh Jha from Nepal has told that he feels proud to study in India where extraordinary achievement on space science had happened. Another scholar wished that ISRO should excel NASA in space research.  Other proud comments include , "Super power" is exhibited , at the rate of 11 Rs/km the mission is the world’s cheapest interplanetary mission , "the cost is lesser than  the budget (100 million dollars) of the English movie ‘Gravity’ ", and "I will work hard to become a space scientist’". For any space mission volume and weight are very critical and the biggest advantage of microwave is miniaturization. The group is doubly happy to see the practical usage of Microwave Engineering in the space mission which made India scale high!

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A rangoli model of Mangalyaan was designed by the group, 
under the guidance of the research scholar Ms. Imaculate Roselin.

 

 

 

 

 

Mars Mission PROJECT DIRECTOR - ISRO ENGINEER: SCIENTIST ENGINEER S ARUNAN along with Prof.S.Raghavan and Engineering Doctor SNEHA BALAN

 

 

 

 

 

 

New for July 2013: Dr. Raghavan has organized a conference on CAD in microwaves on July 27-28, 2013. Download the poster, and download the registration form.

New for June 2013: Dr. Raghavan has organized a three-day conference on Telemedicine (merging medical and engineering practices) at NITT on July 12-14. Here you can learn about many topics including tele-cardiology, tele-opthalmology, tele-anaesthesiology, tele-pathology, tele-diabetology, tele-radiology, stem cell engineering, bio implantable antennas and more. Download the poster and display it at your office or school to show your support!

March 2013: Here are two new pictures. March 8, 2013 was International Women's Day, which was celebrated in advance by NITT faculty and students.

Below is the photo of the first ever female project director of ISRO, Dr.P.K. Anuradha who was the head of GSAT-12, along with the student organizers of the Electronics and Communication Engineering department , N.I.T., Trichirappalli. You will notice that women are well represented in this group, click on it to see their smiling faces!

 

National Institute of Technology, Trichy

Below are Dr. Praveen Wahid, USA, Dr. Salazar Palma of Spain, coordinators of WiE 2013 , along with Microwave Pioneers of TamilNadu.

National Institute of Technology, Trichy

ONAM POOKALAM through MINIATURISED ANTENNAS instead of traditional FLOWERS

29 August 2012

Microwave Group of NIT-T for a change formed ONAM POOKALAM using MICROWAVE INTEGRATED CIRCUIT antennas (ten types of antennas instead of ten rings found in the conventional pookalam viz. fractal antenna, patch antenna, implantable antenna, metamaterial antenna, RF ID, smart antenna, UWB antenna, spiral antenna, Yagi antenna, and sector antenna) chips designed and fabricated by the research scholars. Each small chip antenna has its own significant advantages. This Pookalam made up of small antennas propagate the joy of the integration festival ONAM.

Floral Design, traditionally known as POOKALAM is the hall mark of the colourful harvest festival ONAM. Pookalam that is supposed to please KING MAHABALI is normally consists of ten rings, each representing a god is made during the onam celebration (Atham to Thiruvonam). Flowers like thumba, kekka poovu, chemparathy, thechipoovu, mukkutti, aripoo, hanuman kireedam, and chethi. It sometimes denotes Nakshatram of the day.

National Institute of Technology, Trichy

And we have two more images here and here for your enjoyment.

Below is an image of the NITT ECE class taken when Scientist N. Valarmathi gave a technical talk about satellite communication. Read about her visit here.

Ms. Valarmathi is the first woman to head a remote sensing satellite project for India, the indigenously developed Radar Imaging Satellite RISAT-1. Valarmathi is the second woman to serve as satellite project director at the Indian Space Research Organisation (ISRO) after T. K. Anuradha, who headed the communication satellite GSAT-12 program. Read more about Valarmathi in The Hindu.

 

National Institute of Technology, Trichy

Thumbs up for future microwave engineers! Dr. Raghavan and Ms. Valarmathi front and center.

Author : Unknown Editor

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