Beam Scan of the Millimeter Wave Radiation from a Waveguide Slot Array Antenna Using a Ferrite

Hitoshi SHIMASAKI  Toshiyuki ITOH  

IEICE TRANSACTIONS on Electronics   Vol.E90-C   No.12   pp.2266-2269
Publication Date: 2007/12/01
Online ISSN: 1745-1353
DOI: 10.1093/ietele/e90-c.12.2266
Print ISSN: 0916-8516
Type of Manuscript: Special Section LETTER (Special Section on Recent Technologies for Microwave and Millimeter-wave Passive Devices)
beam scan,  ferrite,  leaky wave,  slot antenna,  slot array,  waveguide,  

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This letter describes a millimeter wave slot array antenna using a rectangular waveguide and a ferrite. The radiation direction of the leaky wave from the slot array can be scanned by applying a dc bias magnetic field parallel to the ferrite. The radiation pattern of a prototype antenna has been measured at 40 GHz. The main beam direction changes from 10 to 3 degree by the bias magnetic field of 0.73 T.