Generation of Circular Polarization Using Rectangular Waveguide with L-Type Probe

Takeshi FUKUSAKO  Kazutoshi OKUHATA  Kazunari YANAGAWA  Nagahisa MITA  

IEICE TRANSACTIONS on Communications   Vol.E86-B   No.7   pp.2246-2249
Publication Date: 2003/07/01
Online ISSN: 
Print ISSN: 0916-8516
Type of Manuscript: LETTER
Category: Antenna and Propagation
circular polarization,  broadband,  wide azimuthal range,  rectangular waveguide,  L-probe,  

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The authors propose a circular polarization generator using a square waveguide with L-type probe located on a side wall of waveguide. The sides of the L-probe forming the right angle are placed perpendicular to the direction of propagation. The position of the right angle is kept at a distance of a quarter-wave length from the side wall. The device provides 27% bandwidth for 3 dB axial ratio at 8.4 GHz on azimuth interval of 160.