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Broadband Design of a Single Layer Large Reflectarray Using Multi Cross Loop Elements

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3 Author(s)
M. R. Chaharmir ; Commun. Res. Centre Canada, Ottawa, ON, Canada ; J. Shaker ; H. Legay

A novel method is proposed to design a single layer large printed reflectarray with multi cross loop elements of variable loop length for broadband operation. Different classes of cross loop elements were used in the design and optimization of this reflectarray. The dimensions of these cross loops are adjusted using an optimization technique to achieve the required phase distribution in a given frequency band. A Ku-band square offset-fed reflectarray of 400 mm times 400 mm dimensions was designed and fabricated using this technique and both simulations and measurement results demonstrated improved gain bandwidth performance. A large Ku-band reflectarray of 800 mm times 800 mm dimensions was designed using the same technique, and the calculation results show a significant improvement in gain-bandwidth performance for the optimized reflectarray.

Published in:

IEEE Transactions on Antennas and Propagation  (Volume:57 ,  Issue: 10 )