Design manufacture and test of Ka-band reflectarray antenna for trasmitting and receiving in orthogonal polarization

Encinar, José A.; Barba, M.

doi:10.1109/antem.2010.5552500

Cited by 18 publications

(12 citation statements)

References 8 publications

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“…However, the size of the quiet zone will be limited in amplitude due to the strong taper imposed by the feed. This fact was checked by near-field measurements of a prototype [28] in a planar range [29]. The measured reflectarray is squared, formed by 1080 elements in a regular grid of 36×30, with periodicity 5 mm×6 mm and was designed to radiate a pencil beam.…”

Section: Reflectarray Near Fieldmentioning

confidence: 99%

General Near Field Synthesis of Reflectarray Antennas for Their Use as Probes in Catr

Prado¹,

Vaquero²,

Arrebola³

et al. 2017

PIER

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Abstract-In this work, reflectarray antennas are proposed for their use as probes in compact antenna test ranges. For that purpose, the quiet zone generated by a single offset reflectarray is enhanced, overcoming the limitation imposed by the amplitude taper of the feed antenna. First, the near field is characterized by a radiation model which computes the near field of the reflectarray as far field contributions of each element, which are modeled as small rectangular apertures and thus taking into account the active element pattern. Then, a phase only synthesis is performed with the LevenbergMarquardt algorithm in order to improve the size of the generated quiet zone. Due to the nature of the application, this near field synthesis takes into account both the amplitude and phase, making it a more challenging task than an amplitude-only synthesis. The optimization is focused on flattening the amplitude while trying to preserve the phase front generated by the reflectarray.

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Section: Reflectarray Near Fieldmentioning

confidence: 99%

General Near Field Synthesis of Reflectarray Antennas for Their Use as Probes in Catr

Prado¹,

Vaquero²,

Arrebola³

et al. 2017

PIER

View full text Add to dashboard Cite

show abstract

“…The improvements would be investigating modifications of the element dimensions to improve bandwidth or selecting International Journal of Antennas and Propagation a smaller unit cell size which is expected to reduce the specular reflections away from the center frequency and potentially to increase bandwidth as well. A dual-layer substrate with wide rectangular elements may also give a substantial improvement and may exhibit results closer to those of [7]. This method, however, would be taken at the expense of a more complicated fabrication process and higher cost for the material.…”

Section: Resultsmentioning

confidence: 99%

“…Some microwave systems use different frequencies simultaneously, for example, VSAT links with downlink and uplink in the 20 and 30 GHz frequency ranges, respectively. Dual-frequency reflectarrays have already been realized based on multilayer structures [5][6][7][8] by arranging separate elements side by side [9] or by using elements operating at different frequencies in the two polarizations. In [10], composed split-ring reflector elements are investigated but only operate in one linear polarization, and no antenna is demonstrated.…”

Section: Introductionmentioning

confidence: 99%

Millimeter-Wave Single-Layer Dual-Frequency Reflectarray Antenna

Ren

Menzel

2017

International Journal of Antennas and Propagation

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“…Furthermore, the interferences between the elements that are observed in traditional dual-band reflectarrays can be avoided by using this design method. Alternatively, stacked patch configurations have been proposed for dual-band / dual-coverage operation with dual-linear polarization [23], [24]. In this approach, the beam is directed independently for two bands / dual-coverage by employing two separate feeds and the sizes of the patches are tuned independently for each polarization and each beam.…”

Section: Introductionmentioning

confidence: 99%

Single-Layered Broadband Dual-Band Reflectarray With Linear Orthogonal Polarizations

Guo

Tan

Chio

2016

IEEE Trans. Antennas Propagat.

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This paper presents a single-layered broadband dual-band reflectarray with linear orthogonal polarizations in two adjacent bands. The reflectarray is designed to focus a broadside beam at 10.7 GHz -12.7 GHz band in vertical polarization and 12.7 GHz -14.7 GHz band in horizontal polarization respectively. Different to traditional square grids adopted in many reflectarray designs, this article proposes sub-wavelength rectangular grids in a single-layered structure for achieving broad bandwidth in both bands. Two pyramidal horn antennas with opposite positions are employed to feed the reflectarray for vertical and horizontal polarizations respectively. The elements consist of single-layered patches arranged in sub-wavelength rectangular grids. To realize the dual-band operation, one dimension of the patches is adjusted to direct the beam at the lower band in vertical polarization whereas the other orthogonal dimension is tuned to focus the beam at the upper band in horizontal polarization. The measured results show that the proposed dual-band reflectarray can realize a broad 1.5-dB gain bandwidth of 24% and 21% with aperture efficiency of 48% and 38% for the lower and upper band respectively, which demonstrates better behavior than various existing dual-band designs adopting traditional square grids.Index Terms-Single layer, rectangular patch, dual-band reflectarray, subwavelength.

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Design manufacture and test of Ka-band reflectarray antenna for trasmitting and receiving in orthogonal polarization

Cited by 18 publications

References 8 publications

General Near Field Synthesis of Reflectarray Antennas for Their Use as Probes in Catr

General Near Field Synthesis of Reflectarray Antennas for Their Use as Probes in Catr

Millimeter-Wave Single-Layer Dual-Frequency Reflectarray Antenna

Single-Layered Broadband Dual-Band Reflectarray With Linear Orthogonal Polarizations

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