PROF. DR. S. RAGHAVAN CONGRATULATED ISRO CHAIRMAN DR. V. NARAYANAN

A felicitation function was held for ISRO Chairman Dr. V. Narayanan, Indian cryogenic engineer, and distinguished rocket scientist, at D.G. Vaishnav College in Arumbakkam, Chennai, on 16th March 2025. During the event, Prof. Dr. S. Raghavan, extended his congratulations to Dr. V. Narayanan, the Chairman of ISRO, recognizing his significant achievements and contributions to the field of space science and technology.

Prof. Dr. S. Raghavan Congratulated ISRO Chairman Dr. V. Narayanan

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RAJESWARI CHATTERJEE – THE FIRST WOMAN SCIENTIST TO PIONEER THE FIELD OF MICROWAVE ENGINEERING IN INDIA

Rajeswari Chatterjee – The first Woman Scientist to pioneer the Field of Microwave Engineering in India Professor Rajeswari Chatterjee lived a fulfilled life as reflected in her own words “Lucky to be where I am” in her biography. Brilliant in studies, professionally accomplished, sharp in intellect and memory, courageous and forthright in expressing views coupled with a kind personality having deep concern for societal issues such as caste discrimination and women’s education, her life spanning Jan.1922 to Sept. 2010, stands tall to inspire, particularly young women scientists and engineers. Rajeswari had her early education in a “Special English School” set up by her grandmother, Kamalamma Dasappa, in the ‘Mahila Seva Samaj’ in Basavanagudi, Bangalore. Kamalamma was one of the very first women graduates in the erstwhile Mysore State and had played a pioneering role in social reform and for the emancipat...

SMITH CHART DESIGNED ON A CAKE WITH TECHNICAL MEASUREMENS for the first time in the WORLD

SMITH CHART DESIGNED ON A CAKE WITH TECHNICAL MEASUREMENS for the first time in the WORLD Smith Chart design on a Cake Smith Chart is a pictorial chart through which one can calculate complicated Transmission line (HIGH FREQUENCY MICROWAVE CIRCUIT THEORY) computations. In a second numerical answers can be found. This will be useful in WIRLESS COMMUNICATIONS and other microwave communications. Microwave Integrated Circuit components can be designed. Matching can be done.Amplifiers and Oscillators design can be made easy. The chart was found by Ph.Smith during 1938. The M.Tech first year ECE students under the guidance of Dr S Raghavan, Professor, ECE dept., N I T Trichy came out for the first time with the novel idea of DESIGNING the same through the cake. The team Designed Smith Chart on a Cake Smith Chart design on a Cake Smith Chart design on a Cake Dr S Raghavan Senior Professor, ECE dept., N I ...

Dr S.RAGHAVAN AND LIBRARY WORKS

Dr.S.Raghavan and LIBRARY works Dr.S.Raghavan was requested by the Ex Director of NIT Trichy Dr.P.SUBRAMANIAM to take over the LIBRARAY as OVERALL COORDINATOR as instructed by the Dr.ANAND COMMITTEE (appoint a person who will improve the library in war footing basis) Since that day, He has taken interest in LIBRARIES. And He became member in ILA, IELTS etc. He was Instrumental in the building of the NEW MULTI STORIED building of the present LIBRARY of NIT, Trichy. In Deccan Chronicle, He brought the UNIQUE ACTIVITIES OF KARUR CENTRAL LIBRARY in which he is one of the patrons. Unique Activities Of Karur Central Library i n Deccan Chronicle Special Features of Library for Visually Impaired Unique activities of Karur central library and Dr.S. Raghavan's contribution to the library Advise to Students

FATHER OF RADIO WHO MADE INDIA PROUD

JC BOSE PEN SKETCH JC BOSE is the FATHER OF RADIO (and NOT MARCONI) of the world. Marconi himself had lots of regard for JC BOSE. He played with 65 GHz so many years before, he has done work on METAMATERIAL as well as FSS. This is the pen sketch drawn in an hour by Ms. K arri Sri Siddhi , III year ECE, NIT T. MS KARRI SRI SIDDHI (along with 2 more girls) was the first to draw "THE SMITH CHART" in the form of RANGOLI(ATHAPOO, KOLAM) IN THE 50 YEARS HISTORY OF R.E.C./N.I.T., TRICHY as a token of gratitude to the MICROWAVE LIFETIME ACHIEVER DR S RAGHAVAN. Incidentally One M.TECH. BATCH for the first time in the world designed smith chart cake(can be found in google and yahoo if searched "smith chart". SMITH CHART FOUND IN 1938 BY PH SMITH makes the design of transmission lines in seconds. Moral Story of PEN SKETCH ( rather than pencil sketch ) by Ms. KARRI SRI SIDDHI "The reason I choose pen sketching instead of penci...

JOIN HANDS TO CELEBRATE OUR INDEPENDENCE DAY

JOIN HANDS TO CELEBRATE OUR INDEPENDENCE DAY This is always so exciting to come together and celebrate the historic day with a feeling of patriotism and a sense of oneness. Yeah! This is the day let us recall our nation leaders who got India independence. With Dr.A.P.J. Abdul Kalam Living Mother Therssa Padmabhusan Dr V Santha Chair Person Adyar Cancer Research Centre Independence day Celebration Dr.S. Ragahvan, Professor, ECE Department, NIT-Trichy

SMITHCHART ART USING MATLAB BY P.SANDEEP REDDY UNDER THE EXTREME GUIDANCE OF DR.S.RAGHAVAN SIR

M.Tech. student has done a Smith chart art with a great care and effort after getting the guidance of DR S RAGHAVAN P. Sandeep Reddy is a M.Tech student, National Institute of Technology, Tiruchirappalli, doing wonders in MATLAB software with the guidance of Professor Dr. S. RAGHAVAN . Recently he has done a " THANK YOU NOTES" for his beloved guide Dr. S. RAGHAVAN in a compressed Smith chart on MATLAB software through coding with a great care and effort. Here is the picture gallery of his smith chart art. Note on compressed smith chart Compressed smith chart Smith chart art P. Sandeep Reddy Art by, P. SANDEEP REDDY Under extreme guidance of Dr. S. Raghavan Sir Department of Electronics and Communication Engineering National Institute of Technology, Tiruchirapalli.

Dr.S. RAGHAVAN's CONTRIBUTION TO LIBRARIES

HELEN KELLER Helen Keller HELEN KELLER- an international celebrity who has shown the light of the day to disabled and a prodigy is to be remembered on this ‘WORLD DISABLED DAY’. Helen Keller would not have been known to the world had she not lost both her sight and hearing at nineteen months of age due to scarlet fever. “The best and most beautiful things in the world cannot be seen or even touched. They must be felt with the heart”; this is what she has proved to the universe by her life. She practiced and wrote,” Although the world is full of suffering, it is full also of the overcoming of it”. Yes! Helen Keller overcame disabilities and worked to help others who were blind and deaf. she has shown millions of people that disability need not be the end of the world. Helen Keller was born on June27, 10 in Tuscumbia, Alabama... Through Alexander Graham Bell, inventor of the telephone and a teacher for the deaf a young teacher, Annie Sull...

THREE RESEARCH SCHOLARS OF THE SAME GUIDE OF NIT T HAVE THE UNIQUE DISTINCTION OF BEING INVITED TO PRESENT THEIR RESEARCH WORKS IN JAPAN

Three Research Scholars of the same GUIDE of NIT T have the unique distinction of being invited to present their research works in JAPAN Three students from NIT-T to present papers in Kyoto Conference- With their guide Dr.S.Raghavan Ms. Divya, Mr. ArvindKumar and Mr. Krushnakanthare to present their individual research works in the field ‘Microwaves in Defence Research’ in the Asia Pacific Microwaves Conference (APMC) 2018 in Kyoto, Japan next week. The Research scholars are awarded trav el grant also. The unique rare distinction is works of three scholars are from the same guide, Prof.S. Raghavan, senior most Professor, Electronics and Communication Engineering Department, N I T Trichy. Three scholars’ works are related to defence research and each one of them will be proudly presenting their works along with their guide in Japan during Nov 6-9, 2018 Three students from NIT-T to present papers in Kyoto Conference- With their guide Dr.S.Ragha...

MICROWAVES IN HEALTH CARE

DOCTORS RESPONSIBILITIES INCREASE AS PATIENT BECOME MORE KNOWLEDGEABLE LIMITATIONS OF CT CAN BE OVERCOME BY MRI DEVELOPMENT OF BIOMEDICAL TECHNOLOGY BOOSTS MEDICAL TOURISM Advanced and Accurate Diagnosis, affordable medicine to everyone and cost effective treatment have made the Indian Medical Tourism flourish. In his introductory speech, Dr.S.Raghavan, Professor, Electronics and Communication Engineering Department, N I T Trichy during an ENGINEERING MEDICAL seminar attended by more than two hundred scholars, held in N I T Trichy under the president ship of Dr V Sivan, Ex Director explained the need for the amalgamation of Medicine and Engineering. Dr.M.A. Aleem, Distinguished Professor, Dr.MGR Medical Univ...

VALENTINE DIAGRAM and MICROWAVE TECHNOLOGY

TECHNOLOGICAL PRINCIPLES ARE DERIVED FROM NATURE: VALENTINE DIAGRAM and MICROWAVE TECHNOLOGY VALENTINE DIAGRAM and MICROWAVE TECHNOLOGY Life will be colourful when the MATCHING between Life partners is PERFECT. Similarly the Microwave Technology which is the back bone of modern communication, space applications, and digital diagnostics of health care, Defence applications is said to work perfect if the MATCHING is good. In Microwave technology, MATCHING is referred by the term ‘Reflection coefficient’. For perfect Matching ‘Reflection coefficient’ should be ‘zero’ and ‘Transmission coefficient should be ‘one’. In general they are all called Scattering coefficients. A curve of scattering coefficients drawn on Smith Chart (tool to ease the parameter calculation) resembles the ‘Valentine diagram’. The commonality between Life and ‘Microwave technology’ as depicted by the enclosed chart (thanks to ‘Microwave 101’) is ‘MATCHING’ DR.S.RAGHAVAN SENIORMOST FACULTY IN ELECTRO...

PROF S RAGHAVAN

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