Satellite antennas based on MEMS tunable reflectarrays

Legay, Hervé; Cailloce, Y.; Vendier, O.; Caille, G.; Perruisseau‐Carrier, Julien; Lathi, Markku; Polizzi, Jean-Philippe; Oestermann, U.; Pons, Patrick; Raveu, Nathalie

doi:10.1049/ic.2007.0941

Cited by 7 publications

(6 citation statements)

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“…Fourth, reflectarrays offer an independent phase control on each polarization, which can be used to produce a different beam in each polarization [16]- [17]. Finally, reflectarrays could provide in-flight reconfigurability of the coverage [18], provided that electronically controllable phase-shifters are included at element or sub-array level [19].…”

Section: Introductionmentioning

confidence: 99%

Reflectarray Antennas for Dual Polarization and Broadband Telecom Satellite Applications

Florencio

Encinar

Boix

et al. 2015

IEEE Trans. Antennas Propagat.

153

127

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Abstract-A reflectarray antenna with improved performance is proposed to operate in dual-polarization and transmit-receive frequencies in Ku-band for broadcast satellite applications. The reflectarray element contains two orthogonal sets of four coplanar parallel dipoles printed on two surfaces, each set combining lateral and broadside coupling. A 40-cm prototype has been designed, manufactured and tested. The lengths of the coupled dipoles in the reflectarray cells have been optimized to produce a collimated beam in dual polarization in the transmit and receive bands. The measured radiation patterns confirm the high performance of the antenna in terms of bandwidth (27%), low losses and low levels of cross polarization. Some preliminary simulations at 11.95 GHz for a 1.2-m antenna with South American coverage are presented to show the potential of the proposed antenna for spaceborne antennas in Ku-band.

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Section: Introductionmentioning

confidence: 99%

Reflectarray Antennas for Dual Polarization and Broadband Telecom Satellite Applications

Florencio

Encinar

Boix

et al. 2015

IEEE Trans. Antennas Propagat.

153

127

View full text Add to dashboard Cite

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“…Conventionally, the application for most radar and long haul communication that requires such a high-gain antenna has relied on parabolic reflectors or arrays [1]. In certain cases, the parabolic reflector is difficult to manufacture due to its curved surface especially at higher microwave frequencies for satellite applications [2]. In addition, active or passive phased arrays may contribute to the complexity and losses on the antenna itself because of the existing of the power division transmission lines and any other electronic devices being attached to it [3].…”

Section: Introductionmentioning

confidence: 99%

Design and Analysis of Microstrip Reflectarray Antenna With Minkowski Shape Radiating Element

Zubir¹,

Rahim²,

Ayop³

et al. 2010

PIER B

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Abstract-This paper describes the design and analysis of a Microstrip Reflectarray Antenna (MRA) with Minkowski shape radiating element at frequency of 11 GHz. This structure has been analyzed and compared with the traditional reflectarray element (square element patch). It is found that this antenna array has lower sidelobe level (SLL) characteristic which is down to −25 dB. This MRA has maximum realized gain of 29.6 dB with half-power beamwidth (HPBW) of 3.7 • . The validation for the proposed MRA is done by comparing the simulated and measured E-plane radiation pattern. A very good agreement is found from the comparison between simulation and measurement.

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“…Commonly used methods implement trenches [1] in the waveguide short plate to hold unit cell(s) in place during measurements. Similarly holes or trenches are made in waveguide or short plate [2][3][4][5][6] respectively to route DC bias lines to the unit cell. It is a necessary however, cumbersome process.…”

Section: Introductionmentioning

confidence: 99%

Millimetre wave reflectarray antenna unit cell measurements

Ahmad¹,

Brown²,

Underwood³

et al. 2017

Loughborough Antennas &Amp; Propagation Conference (LAPC 2017)

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Reflectarray antennas are a potential candidate solution to realize high gains at millimetre waves (mm-waves). A reflectarray contains a large number of spatially illuminated unit cells. The performance of a good reflectarray design is manifested by the behaviour of its comprising unit cells. An established technique to characterise a unit cell is by placing it inside a waveguide to achieve periodic boundary conditions. This usually requires custom waveguide products; making the tests difficult and expensive. Additionally, when the unit cells are reconfigurable as in a smart reflectarray it is hard to take the DC bias lines out of the waveguide without using custom made waveguide parts. This contribution address the issue of unit cell placement inside the waveguide and proposes simple unit cell structures to avoid custom made waveguide parts. The idea was verified by measuring a series of unit cells at mm-waves in various configurations and a practically acceptable agreement was found. The proposed structures greatly simplify the reconfigurable unit cell testing.

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Satellite antennas based on MEMS tunable reflectarrays

Abstract: The objective of this paper is to present in progress developments on reconfigurable antennas using the MEMS technology

Cited by 7 publications

References 0 publications

Reflectarray Antennas for Dual Polarization and Broadband Telecom Satellite Applications

Reflectarray Antennas for Dual Polarization and Broadband Telecom Satellite Applications

Design and Analysis of Microstrip Reflectarray Antenna With Minkowski Shape Radiating Element

Millimetre wave reflectarray antenna unit cell measurements

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