A Transportable Reflectarray Antenna for Satellite Ku-band Emergency Communications

Montori, Simone; Cacciamani, Fabrizio; Gatti, Roberto Vincenti; Sorrentino, R.; Arista, Guido; Tienda, C.; Encinar, José A.; Toso, Giovanni

doi:10.1109/tap.2015.2398128

Cited by 64 publications

(26 citation statements)

References 19 publications

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“…So the system could be able to support a narrow swath high resolution mode and a wide swath lower resolution mode using single dual linear polarized feeds. Thus, multi feed arrays are replaced by deployable reflectarray panels which results in easily storable solution [8], the long receive antenna support ATI and XTI modes with narrow and wide swathes. …”

Section: Sar Systemmentioning

confidence: 99%

Ka-band reflectarray antenna system for SAR applications

Tienda

Younis

López-Dekker

et al. 2014

The 8th European Conference on Antennas and Propagation (EuCAP 2014)

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This paper presents two reflectarray antenna configurations used as receive and transmit antennas for a kuband Synthetic Aperture Radar system (SAR). The receive antenna is constituted by nine equal single offset reflectarray modules. The transmit antenna is based in two dual offset parabolic reflector antenna with a rectangular reflectarray as main reflector. Both receive and transmit antennas are able to work in two different modes using orthogonal polarizations, the narrow swath mode and wide swath mode.

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Section: Sar Systemmentioning

confidence: 99%

Ka-band reflectarray antenna system for SAR applications

Tienda

Younis

López-Dekker

et al. 2014

The 8th European Conference on Antennas and Propagation (EuCAP 2014)

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“…In view of that, only few examples of SatCom reflectarrays have been investigated so far. For instance, in [5] a transportable reflectarray with dual linear polarization at the Ku-band is presented. This configuration employs a 2 of 8 passive sub-reflectarray with an f /D that exceeds the unity and a main-reflectarray with 1-bit phase control.…”

Section: Introductionmentioning

confidence: 99%

A Ka-Band Cylindrical Paneled Reflectarray Antenna

et al. 2019

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Cylindrical parabolic reflectors have been widely used in those applications requiring high gain antennas. Their design is dictated by the geometric relation of the parabola, which relate the feed location, f, to the radiating aperture, D. In this work, the use of reflectarrays is proposed to increase D without changing the feed location. In the proposed approach, the reflecting surface is loaded with dielectric panels where the phase of the reflected field is controlled using continuous metal strips of variable widths. This solution is enabled by the cylindrical symmetry and, with respect to rectangular patches or to other discrete antennas, it provides increased gain. The proposed concept has been evaluated by designing a Ka-band antenna operating in the Rx SatCom band (19–21 GHz). A prototype has been designed and the results compared with the ones of a parabolic cylindrical reflector using the same feed architecture. Simulated results have shown how this type of antenna can provide higher gain in comparison to the parabolic counterpart, reaching a radiation efficiency of 65%.

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“…An S-Band contoured beam (for the covering Asia and China) is generated by the center-fed method while using the multi-feed multibeam principle 19 beams with 2.5 o beam width are produced by cutting the C-Band into two subbands (3.7 GHz -3.95 GHz) and (3.95 GHz -4.2 GHz) for making the coverage possible at lower and upper frequency band. A Ku-Band transportable reconfigurable RA antenna for satellite communication is presented in [15]. Broadband circularly polarized RA has been designed in [16], using cross Bow-tie elements while element rotation technique has been utilized for the phase compensation.…”

Section: Introductionmentioning

confidence: 99%

Broadband Performance of Novel Closely Spaced Elements in Designing Ka-Band Circularly Polarized Reflectarray Antennas

Tahseen

Kishk

2017

Antennas Wirel. Propag. Lett.

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Circularly polarized Ka-Band reflectarray (RA) antennas are designed and fabricated using novel broadband closely spaced elements. We present the broadband element study for the Ka-Band. Three different circularly polarized RA antennas are developed and fabricated from a single dielectric substrate using three distinct elements, which are optimized. All antennas are made of 625 elements those occupy 6.25 × 6.25λ 2 at 30 GHz. A circularly polarized Ka-Band conical horn antenna is used to excite the RA. The measured results exhibit good agreement with the simulations. Each of the proposed antennas provides an overall 30 % bandwidth that represents the measured bandwidth of -10 dB reflection coefficients, 1-dB gain variation, and the 3-dB axial ratio (AR). The estimated maximum aperture efficiency is 55 % at 30 GHz. Two larger RAs of size 25.25 × 25.25λ 2 (10201 elements) are designed with F/D 0.59, and 2.74, respectively, to show that the path loss is the main reason affecting the gain bandwidth.

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A Transportable Reflectarray Antenna for Satellite Ku-band Emergency Communications

Cited by 64 publications

References 19 publications

Ka-band reflectarray antenna system for SAR applications

Ka-band reflectarray antenna system for SAR applications

A Ka-Band Cylindrical Paneled Reflectarray Antenna

Broadband Performance of Novel Closely Spaced Elements in Designing Ka-Band Circularly Polarized Reflectarray Antennas

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