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Circular-polarized reconfigurable grating antenna for low-cost Millimeter-wave beam-steering

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3 Author(s)
Rodenbeck, C.T. ; Electr. Eng. Dept., Texas A&M Univ., College Station, TX, USA ; Ming-yi Li ; Kai Chang

This communication presents a circular-polarized (CP) reconfigurable grating antenna for low-cost millimeter-wave beam steering. A CP grating array is introduced. Using an inertialess mechanical movement, the grating design can be reconfigured along the surface of a dielectric image line, allowing a directive CP beam to steer across a wide range of angles. Over 43° of beam steering is achieved at 32.5 GHz with axial ratio less than 1 dB across the entire scan range. Measured performance agrees well with theory. These results are inherently scalable to higher millimeter-wave frequencies and should have numerous uses in emerging millimeter-wave satellite communications applications and other related systems for mobile communications and radar.

Published in:

Antennas and Propagation, IEEE Transactions on  (Volume:52 ,  Issue: 10 )