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Original Articles

Admittance Characteristics of Wide Longitudinal Slots in Rectangular Waveguides

, , FIETE, &
Pages 21-25 | Received 23 Sep 1997, Published online: 26 Mar 2015
 

Abstract

Array of longitudinal slots in the narrow wall of a rectangular waveguide are used to produce vertically polarized fields. The data on admittance characteristics of such slots is available in literature for minutely thin slots. However, high power applications require wide slots to avoid possible electrical breakdown. The analysis of such slots is of present interest. Admittance characteristics are obtained using the concept of self-reaction and discontinuity in modal current while taking the width of the slot into account. The effect of the width of the slot on the resonant frequency as well as slot length is considered in the present work.

Additional information

Notes on contributors

V S S N Srinivasa Baba

V S S N Srinivasa Baba received the BE degree from Andhra University, Visakhapatnam, India, in 1988 and MS degree from Jawaharlal Nehru Technological University, Hyderabad, India in 1993.

He has been in the faculty of Electronics and Communications Engineering, College of Engineering GITAM, Visakhapatnam since 1988. At present, he is an Associate Professor in the same department. Currently, he is working for his PhD under the guidance of Prof G S N Raju, His interests include Array antennas for Radar applications and EMI/EMC.

G S N Raju

G S N Raju has done his BE and ME in Andhra University with distinction and first rank. He obtained his PhD degree from IIT, Kharagpur, Department of Electronics and Electrical Communication Engineering.

Prof Raju has been in the faculty of Electronics and Communications Engineering, Andhra University since 1979. He was a visiting Professor in the Universities of Paderborn and Karlsruhe, Germany in 1994, He is the recipient of the Best Researcher Award from the Governor of Andhra Pradesh in 1994.

Prof Raju was Head of the Department of ECE, Andhra University, during 1992–95. At present he is the Associate Editor of EMC journal. He has guided three PhD thesis and another six are working under his guidance. He is the Fellow of IETE, IE and DAAD. He is the chairman of the biggest Vazag chapter of SEMCE(I). His fields of interests are Phased Arrays, Applied Electromagnetics, EMI/EMC etc.

K R Gottumukkala

K R Gottumukkala was born on July 15, 1943 in Undi, West Godavari District, Andhra Pradesh. He did his education upto Higher Secondary level at Undi, Graduation in DNR College, Bheemavaram, Post graduation in Mathematical Physics in Andhra University, passing out with first class first in 1964. He was appointed as Lecturer in the same year and was elevated as Reader in 1980, as Professor in the Department of Engineering Mathematics in 1991.

He did his PhD degree in Magneto Hydro Dynamics and published several papers in National and International repute. He guided about twelve students for their research degrees.

He held administrative positions like Head of the department and served as Principals of Engineering and Professional Colleges. He worked abroad as Professor for about three years and travelled widely in Europe. He was a Reviewer for Indian Science journal and Journal of Bhagdad.

He was member of UPSC Committee to formulate and revise the syllabus. He served as adjudicator of thesis submitted in other Universities. He was also a member of Board of Studies in Applied Mathematics and Convenor of syllabus drafting Committee.

His present fields of research interest are Mathematical modelling of Communication systems, Magneto hydro dynamics and EMI/EMC etc.

Ajay Chakraborty

Ajay Chakraborty was born on December 25, 1952. He received BTech, MTech and PhD degrees from the Institute of Technology, Kharagpur, India in 1975, 1977 and 1982 respectively.

He joined the Radar Centre of Indian Institute of Technology, Kharagpur in 1972. He became a Lecturer in 1980 and was promoted to Assistant Professor in 1984. Currently, he is Professor in the Department of Electronics and Electrical Communication Engineering of the same Institute. He also worked as Visiting Professor in the Universities of Syracuse, USA in 1989. His interests include array design, antenna feeds and EMI/EMC etc.

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