Analysis of Crossed Waveguide Inclined Slot-Coupled Junction

Abstract

The paper presents the method of finding the complete equivalent circuit of crossed rectangular waveguides coupled through a centered inclined slot in the common broad wall. The centered slot is replaced by an equivalent magnetic elliptic cylindrical dipole and the method of finding the length of their principal axes as well as their angle of inclination θ, looking from the top and bottom guides are discussed. Using conformal transformation, the elliptic cylinder is transformed into circular cylinder, whose radii are different but depend on θ looking from the top and bottom guides. The variational method based on waveguide dyadic Green's function is used for finding the parameters of the equivalent circuit. Numerical data are presented.

Indexing terms:

• Crossed waveguide
• coupling through inclined slot
• equivalent magnetic dipole
• conformal transformation
• evanescent modes
• energy storage

Additional information

Notes on contributors

Arun Gayen

Arun Gayen was born in Pasighat, Arunachal Pradesh, India in 1978. He received the BTech degree in Electronics and Communication Engineering from the North Eastern Regional Institute of Science and Technology under North Eastern Hill University, Shillong in 2002. He is currently pursuing research work in the Department of Electronics and Electrical Communication Engineering, Indian Institute of Technology, Kharagpur, under the guidance of Prof B N Das, mainly in the field of EMI/EMC and also registered for PhD degree.

Ashis Kumar Tiwari

Ashish Kumar Tiwari was born on 21st August 1971. He obtained BE (Electronics and Instrumentation), from Devi Ahilya University, Indore, India and MTech (Microwave Electronics) from Delhi University, in 1993 and 1996 respectively. After initial stints at commercial software development he joined Society for Applied Microwave Electronics Engineering and Research (SAMEER), Calcutta Centre, under Ministry of Information Technology, in 1999, where he worked on various microwave devices, radar and antenna systems. He was involved in software development for waveguide components and networks, microstrip and monopole antennas and related R&D activities. He joined Centre for Advanced Technology (CAT), Department of Atomic Energy, Indore, India in January 2002 where he is working on Microwave Tubes design and simulation. Areas of interest include Computational Electromagnetics, Wireless Communication, Telecommunication Networks and Antennas, Microwave Tubes and Particle-in-Cell Simulations.