Modeling and Analysis of Round End Slots in Rectangular Waveguides

Abstract

Modeling and analysis of rectangular waveguide fed round end slots with two different sets of curvatures at the ends are presented in this paper. Performance characteristics of a waveguide slot radiator with transverse wall round end radiating slot and a 2-port waveguide junction with a round end coupling slot in the common cross-section of the rectangular waveguide are evaluated by the method of moments for three different slot models considered – namely, the rectangular end slot, round end slots of Type 1 and Type 2 curvatures. The analysis and formulations have been carried out by considering the thick radiating/coupling slot as a stub waveguide. Entire sinusoidal basis functions and Galerkin’s type of inner product are implemented. The variation of the performance characteristics obtained for the different slot models are compared with experimental results for transverse wall slot radiators and slot coupled junctions.

Indexing terms:

• MoM
• Round end slot
• Slot radiator
• Waveguide junction

Additional information

Notes on contributors

A Jhansi Rani

A Jhansi Rani obtained her BTech degree in Electronics and Communication Egineering from Velagapudi Ramakrishna Siddhartha Engineering College, Vijayawada in 1991 and MTech degree in Microwave Engineering from Institute of Technology, Banaras Hindu University, Varanasi in 1993. Later she joined as a Lecturer in ECE Department, V R Siddhartha Engineering College, Vijayawada. She became Associate Professor in 2001 and is continuing at V R Siddhartha Engineering College. She has one publication in IEEE journal and 10 Research papers to her credit. She is the Life Member of FIETE, MISTE, BMESI, MSEMCEI. Her research areas of interest include Electromagnetics, Microwave Antennas, Analysis of Microwave Components, Numerical Methods and Applications and Fiber Optics.

P V D Somasekhar Rao

P V D Somasekhar Rao obtained his BE degree in Electronics & Communication Engineering from Sri Venkateswara University College of Engineering, Tirupati, MTech and PhD degrees in Microwave and Radar Engineering from IIT, Kharagpur. Dr Rao worked at Radar Centre, IIT Kharagpur, and TIFR/RAC Group, Ootacamund. Later, he joined the Faculty of ECE Department of Jawaharlal Nehru Technological University, Hyderabad. Presently, he is the Professor of ECE and, Director, School of Information Technology, at JNT University, Hyderabad. Dr Rao has more than 27 years of teaching / R&D / Industry experience, and has about 35 technical publications to his credit. He is a Senior Member of IEEE (USA), Life Member of ISTE (India) and Fellow of IETE (India). Dr Rao acted as the Research Coordinator, and Director, UGC Academic Staff College, at JNT University, Hyderabad; he also worked as Visiting Professor at Assumption Univesity, Bangkok. His fields of interest include Microwave Antennas including Phased arrays and Smart Antennas, Analysis of Microwave Components and Circuits, Numerical Methods and Applications, EM Waves and Transmission Lines.