VALENTINE DIAGRAM and MICROWAVE TECHNOLOGY

TECHNOLOGICAL PRINCIPLES ARE DERIVED FROM NATURE: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 ELECTRONICS AND COMMUNICATION ENGINEERING,
NIT TRICHY

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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 emancipation of women. Growing up in a well-educated, bro

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 T Trichy

Dr S.RAGHAVAN AND LIBRARY WORKS

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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 pencil art is kind of similar to mistak

JOIN HANDS TO CELEBRATE OUR INDEPENDENCE DAY

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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 Sullivan of Perkins Institut

MICROWAVES IN HEALTH CARE

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

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PROF S RAGHAVAN

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