Design, Manufacturing and Test of a Dual-Reflectarray Antenna With Improved Bandwidth and Reduced Cross-Polarization

Tienda, C.; Encinar, José A.; Arrebola, Manuel; Barba, M.; Carrasco, Eduardo

doi:10.1109/tap.2012.2228620

Cited by 55 publications

(43 citation statements)

References 28 publications

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“…The illumination level on the edges of the sub-reflectarray is close to -12 dB. The analysis of the dual reflectarray antenna has been carried out by using a specific homemade software tool, whose accuracy has been previously validated in other works involving the design, manufacturing and test of a dual reflectarray demonstrator [8]. Figure 6 shows the radiation patterns of the final dual reflectarray antenna.…”

Section: Simulation Resultsmentioning

confidence: 99%

Application of bifocal concept to dual reflectarray configurations for multi-beam satellite antennas in Ka-band

Martinez‐de‐Rioja

Encinar

Pino

et al. 2017

2017 11th European Conference on Antennas and Propagation (EUCAP)

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Abstract-This contribution describes the design of a multibeam dual reflectarray antenna for operation in transmission in . The bifocal design concept has been used to obtain an improved performance for the off-axis beams with respect to the single focused antenna. The required phase-shift distributions are initially obtained with the reflectarrays in parallel planes, and then adjusted to compensate the tilting of both reflectarrays in the final Cassegrain configuration. The simulated radiation patterns in the elevation and azimuth orthogonal planes have been calculated for the two beams generated by the focuses, and then the multi-beam performance of the antenna has been evaluated.Index Terms-dual reflectarray, multi-beam antenna, bifocal design, satellite communications, Ka-band.

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Section: Simulation Resultsmentioning

confidence: 99%

Application of bifocal concept to dual reflectarray configurations for multi-beam satellite antennas in Ka-band

Martinez‐de‐Rioja

Encinar

Pino

et al. 2017

2017 11th European Conference on Antennas and Propagation (EUCAP)

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“…Some techniques for lowering the crosspolarization of reflectarrays have been described which rely on positioning the elements in certain configurations [14] or by adjusting the elements dimensions forcing a null in the amplitude and a change of sign in the phase of the crosspolar reflection coefficients [15]. However, these techniques present limitations and cannot be used to synthesize shaped-beam reflectarrays.…”

Section: Introductionmentioning

confidence: 99%

Efficient Crosspolar Optimization of Shaped-Beam Dual-Polarized Reflectarrays Using Full- Wave Analysis for the Antenna Element Characterization

Prado

Arrebola

Pino

et al. 2017

IEEE Trans. Antennas Propagat.

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A method for the optimization of the crosspolar component of dual-polarized reflectarrays using full-wave analysis at the element level is described and demonstrated. The reflectarray full-wave analysis is based on local periodicity and integrated within the optimization process in order to accurately characterize the crosspolar far field. The proposed method is based on the generalized Intersection Approach framework using the Levenberg-Marquardt Algorithm as backward projector, and the employed full-wave analysis is based on the Method of Moments assuming local periodicity (MoM-LP). Several strategies to accelerate the computations are exploited, such as the parallelization of all the algorithm building blocks. To minimize the impact of MoM-LP in the optimization process, a strategy to reduce the number of MoM-LP calls is described, further accelerating the algorithm. Moreover, the convergence is improved by working with the squared field amplitude, alleviating the trap problem of local optimizers. This method allows to optimize the crosspolar component in the whole visible region or only in the coverage zone to facilitate the convergence, reduce computing time and memory usage. Two test cases are provided to validate the technique, one with an isoflux pattern for global Earth coverage and another with European coverage for DBS application.

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“…Up to now, a lot of works have been done to realize the phase response of the reflected surface, such as a phase delay microstrip line and strip line [1], [2], a variable size cell [3], [4], a rotation unit [5], [6]. However, these techniques suffer high cross-polarization level and the antenna efficiency is deteriorated.…”

Section: Introductionmentioning

confidence: 99%

A Low Cross-Polarization Reflectarray Antenna Based on SIW Slot Antenna

Fan

Choi

Yang

et al. 2017

Antennas Wirel. Propag. Lett.

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 Abstract-A low cross-polarization reflectarray antenna using SIW slot antenna as element is presented. The proposed slot antenna element consists of two SIW layers, and a longitudinal slot is etched on the upper layer for radiation while the SIW section on bottom layer has variable length for phase controlling. A coupling slot is etched in the metal interface of the two layers to realize signal interconnection. In the whole frequency band, the phase of the proposed element can be linearly adjusted over the range of 360°, with small phase error of less than 20° under different oblique incident angles (<30°). Moreover, a very low cross-polarization level of less than -60 dB is realized for the element. Using the newly proposed SIW element, a novel reflectarray antenna is designed and fabricated. The simulated and measured results show that the proposed antenna exhibits a high maximum gain of 24 dBi at 30.4 GHz with the aperture efficiency of 48% and a low cross-polarization level of -40 dB.

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Design, Manufacturing and Test of a Dual-Reflectarray Antenna With Improved Bandwidth and Reduced Cross-Polarization

Cited by 55 publications

References 28 publications

Application of bifocal concept to dual reflectarray configurations for multi-beam satellite antennas in Ka-band

Application of bifocal concept to dual reflectarray configurations for multi-beam satellite antennas in Ka-band

Efficient Crosspolar Optimization of Shaped-Beam Dual-Polarized Reflectarrays Using Full- Wave Analysis for the Antenna Element Characterization

A Low Cross-Polarization Reflectarray Antenna Based on SIW Slot Antenna

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