Coaxial to rectangular waveguide transitions

1992 ◽  
Author(s):  
I. Fabregas ◽  
K. Shamsaifar ◽  
J.M. Rebollar
Keyword(s):  
Rectangular Waveguide ◽  
Waveguide Transitions

Dual frequency coaxial rotary joint with multi-stepped transition

2010 ◽  
Vol 2 (2) ◽  
pp. 219-224 ◽  
Author(s):  
Soumyabrata Chakrabarty ◽  
Vijay Kumar Singh ◽  
Shashi Bhusan Sharma
Keyword(s):  
Rectangular Waveguide ◽  
Coaxial Waveguide ◽  
Dual Frequency ◽  
Dual Channel ◽  
Rotary Joint ◽  
Tem Mode ◽  
Channel Mode ◽  
Waveguide Design ◽  
Transverse Electromagnetic ◽  
Waveguide Transitions

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.

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