High-Performance Electrically Thin Dual-Band Polarizing Reflective Surface for Broadband Satellite Applications

Fonseca, Nelson J. G.; Mangenot, C.

doi:10.1109/tap.2015.2509011

Cited by 55 publications

(35 citation statements)

References 26 publications

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“…The flat reflectarray subreflector discriminates the orthogonal LP at Tx and Rx, providing the required beam deviation by implementing a different phase distribution for each LP. A similar concept has been proposed in [35], but using a gridded subreflector instead of a flat reflectarray to discriminate the orthogonal LP. The use of a reflectarray subreflector (RAS) has the advantage of providing greater flexibility to control the phase response in each polarization at Tx and Rx.…”

Section: B Multibeam Draa With a Parabolic Main Reflectarraymentioning

confidence: 99%

Advanced Multibeam Antenna Configurations Based on Reflectarrays: Providing multispot coverage with a smaller number of apertures for satellite communications in the K and Ka bands

Martinez‐de‐Rioja

Encinar

et al. 2019

IEEE Antennas Propag. Mag.

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This paper presents some recent developments in multiple beam antennas (MBAs) based on reflectarrays for communication satellites in K-and Ka-bands. The existing high throughput satellites commonly employ four reflector antennas to provide cellular coverage formed by multiple spot beams in a four color scheme. Reflectarray antennas are proposed as an attractive solution for the design of novel MBA configurations to produce multi-spot coverage with a smaller number of apertures than conventional MBA systems based on reflector technology. Single and dual reflectarray configurations have been considered for this purpose, exploiting the reflectarrays' ability to produce independent beams in different polarizations and frequencies.

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Section: B Multibeam Draa With a Parabolic Main Reflectarraymentioning

confidence: 99%

Advanced Multibeam Antenna Configurations Based on Reflectarrays: Providing multispot coverage with a smaller number of apertures for satellite communications in the K and Ka bands

Martinez‐de‐Rioja

Encinar

et al. 2019

IEEE Antennas Propag. Mag.

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“…So far, research efforts have mainly concentrated on the development of PCB polarizing screens. Recent proposals consist on PCB screens with wideband operation [19] or multiband behaviour [20], [21]. Very few examples consider cells with 3-D topologies, some of them are discussed next.…”

Section: Introductionmentioning

confidence: 99%

All-Metal 3-D Frequency-Selective Surface With Versatile Dual-Band Polarization Conversion

Jiménez

Menargues²,

Garcia-Vigueras

2020

IEEE Trans. Antennas Propagat.

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A dual-band periodic structure is here proposed, which allows for versatile frequency selectivity and polarization conversion functionality. The structure is a monolithic fullmetal piece, and it is built from the arrangement of unit-cells consisting of waveguide sections at cutoff loaded with compound perforations. The topology of such unit-cells enables the efficient and independent interaction with vertical and horizontal electric field components illuminating the periodic structure. A circuit model is proposed to characterize the cells and understand their behaviour. Three different examples of cells are designed to illustrate the structure versatile functionality. One of these examples is manufactured, consisting of a dual-band structure that converts linear polarization into circular with orthogonal senses of rotation at each band. The experimental results are in good agreement with the theoretical predictions, thus validating the underlying operation mechanism and its practical feasibility.

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“…Metasurface (MS) has been increasingly adopted as an alternative to parabolic reflectors for polarisation conversion [1][2][3][4][5][6][7][8]. MS-based polarisation converters are utilised in a number of applications, including telecommunication satellites [1], radar or space antennas [2]. The principle of polarisation converters is to convert the linear polarisation (LP) to circular polarisation (CP).…”

Section: Introductionmentioning

confidence: 99%

Broadband linear‐to‐circular polarisation conversion using the diamond‐shaped reflecting metasurface

Chaihongsa

Kuse

Furuya

et al. 2020

IET Microwaves, Antennas & Propagation

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To overcome the narrow axial ratio (AR) bandwidth inherent in conventional linearly to circularly polarised converters, this research proposes a metasurface (MS) with a diamond‐shaped configuration that can mitigate the effect of surface wave (SW) along the MS edge and achieve a wider 3 dB AR bandwidth. The diamond‐shaped MS structure is realised by slanting a square MS by 45°, and it consists of constituent unit cells of rectangular and arbitrary shapes. The rectangular unit cells are positioned 45° to the square dielectric substrate, and the unit cells along the MS edge are partially cut into arbitrary shape to be perfectly aligned along the edge. The 3 dB AR bandwidths and degradation of the MS are characterised by SW and magnetic current distribution. Simulations are carried out and an MS prototype is fabricated to verify the results. The effects of partially cut unit cells (PCUCs) along the MS edge on the SW are characterised. The simulation and measured 3 dB AR bandwidths of the diamond‐shaped MS are 37.6 and 28.8%, respectively. The novelty of the proposed diamond‐shaped MS polarisation converter lies in the implementation of arbitrary‐shaped PCUCs and the use of the diamond‐shaped configuration in place of conventional square geometry to realise wider AR bandwidth.

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High-Performance Electrically Thin Dual-Band Polarizing Reflective Surface for Broadband Satellite Applications

Cited by 55 publications

References 26 publications

Advanced Multibeam Antenna Configurations Based on Reflectarrays: Providing multispot coverage with a smaller number of apertures for satellite communications in the K and Ka bands

Advanced Multibeam Antenna Configurations Based on Reflectarrays: Providing multispot coverage with a smaller number of apertures for satellite communications in the K and Ka bands

All-Metal 3-D Frequency-Selective Surface With Versatile Dual-Band Polarization Conversion

Broadband linear‐to‐circular polarisation conversion using the diamond‐shaped reflecting metasurface

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