A Dual-Band Dual-Circularly Polarized Reflectarray for <i>K/Ka</i>-Band Space Applications

Naseri, Parinaz; Riel, Mathieu; Demers, Y.; Hum, Sean V.

doi:10.1109/tap.2020.2972650

Cited by 51 publications

(35 citation statements)

References 22 publications

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“…The goal is to maximize the transmission at two frequencies and shape the AR response according to the project specifications. Multi-layer FSS-based structures have been proposed operating either in reflection [19]- [23] or transmission [24], [25]. In [25], the entries of ECMs are obtained by performing optimizations in Keysight Advanced Design System (ADS) [28].…”

Section: Introductionmentioning

confidence: 99%

Dual-Band, Orthogonally-Polarized LP-to-CP Converter for SatCom Applications

Mastro¹,

Ettorre²,

Grbic³

2020

IEEE Trans. Antennas Propagat.

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A systematic design of dual-band, orthogonallypolarized linear-to-circular polarization (LP-to-CP) converters is proposed. This class of polarization converters can transform linearly-polarized waves into right-and left-hand circularlypolarized (RHCP and LHCP) waves in two separate non-adjacent frequency bands. The reported polarizer is made of three cascaded bianisotropic sheet admittances, spaced by two isotropic dielectric slabs. The electromagnetic problem is studied by means of impedance boundary conditions. A transmission-matrix analysis of periodically-loaded transmission-lines is employed in design. An analytic model is developed and closed-form expressions are derived for the frequency response of each sheet admittance. This method avoids the use of multi-parameter optimization procedures. An example of a dual-band, orthogonally-polarized LP-to-CP converter is proposed for satellite communication applications in the K/Ka-band. The polarizer separately performs LP-to-LHCP and LP-to-RHCP conversions over the transmitting and receiving channels of the K/Ka-band. The design is validated with a prototype. Under normal incidence, the polarizer exhibits axial ratios (ARs) lower than 3 dB over the 18-22.2 GHz (∼21%) and 28.7-30.4 GHz (∼6%) bands. The total transmission is above-1 dB within the same two bands. The performance is stable for scanning angles up to ±45 •. For a 45 • angle of incidence, the AR is lower than 3 dB in the bands 17-22 GHz (∼25.6%) and 28.6-30 GHz (∼4.7%) with a total transmission higher than-1.2 dB.

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Section: Introductionmentioning

confidence: 99%

Dual-Band, Orthogonally-Polarized LP-to-CP Converter for SatCom Applications

Mastro¹,

Ettorre²,

Grbic³

2020

IEEE Trans. Antennas Propagat.

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“…Therefore they have a wider range of applications. [1][2][3][4][5][6]. A magnetoelectric (ME) dipole antenna with dual CP radiation is proposed in [6].…”

Section: Introductionmentioning

confidence: 99%

Dual Circularly Polarized Fabry–Perot Resonator Antenna Employing a Polarization Conversion Metasurface

Wang

Zhang

2021

IEEE Access

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A dual circularly polarized (CP) Fabry-Perot (FP) resonator antenna is presented in this paper. A linear to circular polarization conversion metasurface (MS) is employed as the superstrate of the FP resonator antenna. The working principle of the unit cell adopted by the MS enables it to independently control the transmission and reflection characteristics. Firstly, the MS is designed to present high reflectivity to ensure the high gain of the FP resonator antenna. Then the capability of polarization conversion is endowed to it. The square patch of the unit cell can receive two orthogonal LP waves, and the cross slot on the ground plane can also make them get through. Meanwhile, the circular patch with 45° tilted etched slot can radiate different CP waves when excited by different LP waves. Therefore, the proposed MS can combine the function of partial reflection and transmission polarization conversion. And for different LP waves, the MS can convert them into different CP waves. A dual LP microstrip patch antenna is designed to act as the feed of the resonator antenna. When the antenna is fed at different ports, different LP waves are excited in the resonant cavity and are converted into different CP waves by the MS, thus the antenna obtains dual CP radiation. The measured results indicate that the antenna can exhibit excellent dual CP radiation characteristic. Compared with other reported dual CP resonator antennas, the proposed antenna can obtain well performance with simple structure and low profile.

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“…Subsequently, a reflectarray for independent CPW based on stacked Jerusalem crosses was presented in [20]. Afterwards, a reflectarray unit cell based on a thin polarizer using a modified Jerusalem cross cascaded with a dual linearly polarized reflective patch for multibeam space applications was reported in [21]. Next, a two-layer reflectarray cell based on dipoles and arcs that provides circular polarization phase shifting in two different frequencies for multibeam satellite antennas was presented in [22].…”

Section: Introductionmentioning

confidence: 99%