Broadband Reflectarray Antenna Using Sub-wavelength Elements Based on Double Square Meander-Line Rings

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Qin, Peiyuan; Guo, Jay; Weily, Andrew


2015-12-31


Journal Article


IEEE Transactions on Antennas and Propagation


64


1


378-383


A broadband reflectarray is demonstrated employing a novel single layer sub-wavelength phase shifting element. The size of the cell element is a fifth of a wavelength at the center frequency of 10 GHz and the element consists of double concentric square rings of meander lines. By changing the length of the meander line, a 420⁰ phase variation range is achieved at the center frequency. This characteristic makes the proposed configuration unique as most of the reported subwavelength reflectarray elements can only realize a phase range far less than 360⁰. In addition, the slope of the phase response remains almost constant from 9 to 11 GHz, demonstrating a broadband property. A 48 × 48 - element reflectarray antenna is simulated, fabricated, and measured. Good agreement is obtained between simulated and measured results of the phase shifting elements and the entire reflectarray. A measured 1.5-dB gain bandwidth of 18% and a 56.5% aperture efficiency are achieved.


Institute of Electrical and Electronics Engineers


Antennas and Propagation


https://doi.org/10.1109/TAP.2015.2502978


Link to Publisher's Version


EP154601


Journal article - Refereed


English


0018-926X


Qin, Peiyuan; Guo, Jay; Weily, Andrew. Broadband Reflectarray Antenna Using Sub-wavelength Elements Based on Double Square Meander-Line Rings. IEEE Transactions on Antennas and Propagation. 2015; 64(1):378-383. https://doi.org/10.1109/TAP.2015.2502978



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