Title

Dependency Of KA-Band Reflectarray Unit Cell Reflection Properties On The Spacing Between Antenna Elements

Keywords

Microstrip patch; mutual coupling; reflectarray antenna; unit cell; waveguide simulator

Abstract

In this paper, effects of inter-element spacing on the performance of reflectarray unit cells are studied to provide guidelines for an optimum reflectarray design. A reflectarray unit cell is designed at 32 GHz which is the frequency of interest for reflectarray's space applications. By changing the distance between the reflectarray elements from 0.35 to 0.85 λ0 in E plane and 0.45 to 0.95 λ0 in H plane, the resonant frequency is varied from 30.5 to 32.5 GHz (representing more than 6% change), the reflection phase is shifted by 140o, bandwidth is decreased by 4% and the maximum reflection loss is increased by 1.3 dB. To prove the concept, two 5×5 sub-arrays with different inter-element spacing are fabricated, measured and compared with simulations with good agreement. © 2013 IEEE.

Publication Date

5-1-2013

Publication Title

IEEE Radio and Wireless Symposium, RWS

Number of Pages

118-120

Document Type

Article; Proceedings Paper

Personal Identifier

scopus

DOI Link

https://doi.org/10.1109/RWS.2013.6486660

Socpus ID

84876754845 (Scopus)

Source API URL

https://api.elsevier.com/content/abstract/scopus_id/84876754845

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