Single-Layer Dual-Band Reflectarray With Single Linear Polarization

This paper presents two kinds of novel elements to design single-layer dual-band reflectarray, with identical polarization in two closely separated bands. Several degrees of freedom of the proposed elements are tuned to match the desired phase compensations at two center frequencies simultaneously....

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Bibliographic Details
Published in:IEEE transactions on antennas and propagation 2014-01, Vol.62 (1), p.199-205
Main Authors: QU, Shi-Wei, CHEN, Qing-Yong, XIA, Ming-Yao, XIU YIN ZHANG
Format: Article
Language:English
Subjects:
Antenna radiation patterns
Antennas
Applied sciences
Delays
Dual band
Dual-band reflectarray
Exact sciences and technology
Frequency measurement
identical polarization
Mutual coupling
Radiocommunications
Reflection
Resonant frequency
single layer
Telecommunications
Telecommunications and information theory
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Summary:This paper presents two kinds of novel elements to design single-layer dual-band reflectarray, with identical polarization in two closely separated bands. Several degrees of freedom of the proposed elements are tuned to match the desired phase compensations at two center frequencies simultaneously. It is noted that the dual-band characteristics are realized by a single integrated element rather than conventional dual-band elements with independent tunable components corresponding to two center frequencies. A 10 × 10-element offset-fed reflectarray operating at 9 and 13.5 GHz, with a ratio of the center frequencies 1.5, is designed and fabricated to validate the performance of the element, and the measured results show reasonable agreements with simulations. Due to the incompleteness of reflection phase distribution at the two center frequencies of the presented element, a complementary element with four resonances is introduced. Then, a 20 × 20-element reflectarray composed of both kinds of elements is also designed, and the measured results demonstrate a good availability of the proposed elements.
ISSN:0018-926X
1558-2221
DOI:10.1109/TAP.2013.2287517