Bandwidth Enhancement of a Metal-Only Reflectarray Based on the Phoenix Cell

An, Zhihang; Makdissy, Tony; Garcia-Vigueras, María; Vaudreuil, Sébastien; Gillard, Raphaël

doi:10.1109/ap-s/usnc-ursi47032.2022.9887061

Cited by 2 publications

(2 citation statements)

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“…Further improvements are still possible since all available degrees of freedom have not been exploited yet (typically, h could be varied over the aperture of single band MORA as done in ref. [29], variations in L p could also provide more flexibility).…”

Section: Discussionmentioning

confidence: 99%

Three‐dimensional metal‐only phoenix cell and its application for reflectarrays

An,

Makdissy,

Garcia Vigueras

et al. 2023

IET Microwaves Antenna & Prop

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A 3D metal‐only waveguide‐based phoenix cell for reflectarray is presented. The proposed cell consists of two concentric square waveguides and a metallic block in the centre, which offers two operation modes. The first mode uses its cross section to tune reflection phase while the second mode varies the heights of two waveguides to manipulate reflection phase. The principle of the two different modes is analysed in detail. A metal‐only reflectarray antenna at 20 GHz is designed based on the first mode of the phoenix cell. It is fabricated using selective laser melting 3D printing technology. A good agreement between simulations and measurements is achieved. The measured gain at 19.75 GHz is 30.25 dBi with an aperture efficiency of 51.17% respectively. Also, the measured 1‐dB gain bandwidth is 15% (19–22 GHz). A dual band metal‐only reflectarray operating at 20 and 25 GHz is designed based on the second mode of the phoenix cell. The two metal‐only reflectarray antennas fully demonstrate the capabilities of the proposed 3D metal‐only phoenix cell.

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Section: Discussionmentioning

confidence: 99%

Three‐dimensional metal‐only phoenix cell and its application for reflectarrays

An,

Makdissy,

Garcia Vigueras

et al. 2023

IET Microwaves Antenna & Prop

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“…Indeed, a constant Lr is used for all cells (contrarily to what was done in [19] where Lr was also a tuning parameter). This new strategy provides a smoother panel (all cells have the same cross section), which is usually a preferable choice [24]. The chosen value of Lr is set to 2 mm in order to stay apart from the region associated to quasi-TE10 resonances with higher loss (see for instance Fig.…”

Section: B Description Of Design Processmentioning

confidence: 99%

A Reflector Antenna With Integrated Frequency- Selective Metal-Only Reflectarray for Dual-Band Operation

An,

Makdissy,

García-Vigueras

et al. 2023

IEEE Access

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This paper presents a dual-band metal-only antenna that operates at 20 and 40 GHz. The unit cell consists of a square waveguide with short circuit termination and a square metallic block in the center. Its performance is evaluated and analyzed in detail. The proposed metal-only antenna combines the functionalities of reflectarray and parabolic reflector antennas. At 20 GHz, the reflected beam is determined by a parabolic surface. At 40 GHz, the reflected beam is controlled by the phase distribution of cells in the antenna. The gain increases with frequency in the lower frequency band, which is similar to what happens in a parabolic reflector antenna. The antenna profile is significantly reduced and the antenna's performance is improved after rotating the coordinate system. The antenna with reduced profile is fabricated using selective laser melting 3D printing technology. The measured results show that the proposed antenna can operate as parabolic reflector and reflectarray in the target two frequency bands.

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Bandwidth Enhancement of a Metal-Only Reflectarray Based on the Phoenix Cell

Abstract: This paper presents a detailed analysis of the effect of the height of the 3D Phoenix Cell on the performance of Metal-Only Reflectarray Antennas. An improved design approach is proposed and a 18% bandwidth (for gain variations less than 1 dB) is obtained after the optimization.

Cited by 2 publications

References 3 publications

Three‐dimensional metal‐only phoenix cell and its application for reflectarrays

Three‐dimensional metal‐only phoenix cell and its application for reflectarrays

A Reflector Antenna With Integrated Frequency- Selective Metal-Only Reflectarray for Dual-Band Operation

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