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Dual frequency coaxial rotary joint with multi-stepped transition

Published online by Cambridge University Press:  01 July 2010

Soumyabrata Chakrabarty ,
Vijay Kumar Singh  and
Shashi Bhusan Sharma
Soumyabrata Chakrabarty*
Affiliation:
Antenna Systems Area, Space Applications Centre, Indian Space Research Organization, Ahmedabad 380015, India. Phone: +91 2691 2101; Fax: +91 2691 5804.
Vijay Kumar Singh
Affiliation:
Antenna Systems Area, Space Applications Centre, Indian Space Research Organization, Ahmedabad 380015, India. Phone: +91 2691 2101; Fax: +91 2691 5804.
Shashi Bhusan Sharma
Affiliation:
Antenna Systems Area, Space Applications Centre, Indian Space Research Organization, Ahmedabad 380015, India. Phone: +91 2691 2101; Fax: +91 2691 5804.
*
Corresponding author: S. Chakrabarty Email: soumya@sac.isro.gov.in
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Abstract

The present paper presents the design and development of a dual-channel microwave rotary joint using coaxial waveguide as primary waveguide and rectangular waveguide as the secondary waveguide. Design is presented at 5.85–7.02 GHz with 20% bandwidth and at 14–14.5 GHz bands with 3.6% bandwidth using dual channel mode transducers exciting transverse electromagnetic (TEM) mode in the coaxial waveguide. Rectangular to coaxial waveguide transitions employing multi-stepped doorknob transitions are used to excite the TEM mode from the rectangular waveguide. The measured results for electrical parameters such as return loss, insertion loss of the dual-channel rotary joint are presented with 360° rotation of the rotary part with respect to the stator part.

Keywords

Circularly symmetric modeCoaxial waveguideMode transducerMulti-stepped transitionRectangular waveguide
Type
Original Article
Information
International Journal of Microwave and Wireless Technologies , Volume 2 , Issue 2 , April 2010 , pp. 219 - 224
Copyright
Copyright © Cambridge University Press and the European Microwave Association 2010

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References

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