Title :
U-style rotary joint with E01 mode for millimeter waves
Author :
Abramov, V.I. ; Park, Hun-Joong ; Kim, Dong-Hyun ; Lee, Tae-Hyung
Author_Institution :
Actipass Co. Ltd., Kyunggi, South Korea
Abstract :
This paper describes an improved design of the well-known u-style waveguide rotary joint in millimeter band. It contains H10-to-E01 mode converter by way of a right-angle E-plane junction (RAJ) between a rectangular waveguide and a circular waveguide. A simple for fabrication structure of the RAJ mode converter was proposed, and optimized to provide "conjugate matching" method for the rotary joint. A design procedure was developed. Computer simulation of the mode converter and the rotary joint exhibited excellent performance. The return loss < -25/-35 dB (in 10/6 % band), WOW <0.02/0.002 dB (10/6 %). Testing of the rotary joint, fabricated in Ka band, confirmed simulation results.
Keywords :
convertors; impedance matching; millimetre wave couplers; waveguide couplers; waveguide junctions; waveguide transitions; Ka band; RAJ mode converter; U-style rotary joint; circular waveguide; computer simulation; fabrication structure; impedance matching; millimeter band; millimeter wave devices; millimeter waves; multimode waveguides; rectangular waveguide; return loss; right-angle junction; rotary joint testing; rotary joints; waveguide components; waveguide junctions; waveguide rotary joint; waveguide transitions; Analytical models; Frequency; Impedance; Microwave Theory and Techniques Society; Millimeter wave devices; Millimeter wave technology; Narrowband; Performance analysis; Reflection; Resonance;
Conference_Titel :
Microwave Symposium Digest, 2004 IEEE MTT-S International
Print_ISBN :
0-7803-8331-1
DOI :
10.1109/MWSYM.2004.1338974
