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Periodic printed semi-annular substrate loaded TM01–TE11 mode converter

Published online by Cambridge University Press:  26 August 2020

Ashish Chittora Open the ORCID record for Ashish Chittora [Opens in a new window]  and
Swati Varun Yadav
Ashish Chittora*
Affiliation:
Electrical and Electronics Engineering Department, BITS Pilani, K K Birla Goa Campus, Goa403726, India
Swati Varun Yadav
Affiliation:
Electrical and Electronics Engineering Department, BITS Pilani, K K Birla Goa Campus, Goa403726, India
*
Author for correspondence: Ashish Chittora, E-mail: ashish.chittora22@gmail.com
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Abstract

A mode converter design using the concept of periodic substrates loading in a circular waveguide, to convert TM01 mode to TE11 mode is presented in this paper. The detailed design principle, simulation, and measurement results are included in this study. Simulation results show that the purity of output fundamental TE11 mode of the converter approaches 99.2% for an operating frequency of 3.2 GHz. The mode conversion efficiency is more than 90% over 3.07–3.25 GHz band and the relative bandwidth is 5.6% (180 MHz). The proposed TM01–TE11 mode converter has advantages, such as the compact, lightweight structure, high conversion efficiency, and proper bandwidth. The fabrication cost is relatively low and the structure is easy to fabricate. The power-handling capability is limited to 10 MW due to dielectric-based design. The compactness and portability of the system (e.g. Space applications, Accelerators, High Power Microwave) can be improved significantly using the proposed mode converter.

Keywords

Mode converterhigh power microwavewaveguide
Type
Passive Components and Circuits
Information
International Journal of Microwave and Wireless Technologies , Volume 13 , Issue 5 , June 2021 , pp. 447 - 453
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Copyright
Copyright © The Author(s), 2020. Published by Cambridge University Press in association with the European Microwave Association.

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