Title :
A low-cost microwave rotary joint
Author :
Eskelinen, Pekka
Author_Institution :
Dept. of Electr. Eng., Aalto Univ., Espoo, Finland
Abstract :
A simple and cheap coaxial microwave rotary joint covering frequencies from 1 to 21 GHz is described. Measured typical insertion loss is 0.7 dB, return loss stays better than 10 dB and the rotating torque requirement is 26 mNm. Maximum variation of attenuation as a function of rotating angle is 0.5 dB. Operation up to 37 GHz has been tried with loss values around 2 dB, typical.
Keywords :
UHF devices; microwave devices; coaxial microwave rotary joint; frequency 1 GHz to 21 GHz; gain 0.5 dB; loss 0.7 dB; rotating torque requirement; Conductors; Connectors; Insertion loss; Joints; Loss measurement; Microwave measurement; Radar; ball bearings; microwave connectors; microwave measurements; microwave transitions; radar components; rotary joint;
Conference_Titel :
Radar Conference (Radar), 2014 International
DOI :
10.1109/RADAR.2014.7060276
