All-Metal Dual-Frequency RHCP High-Gain Antenna for a Potential Europa Lander

Chahat, Nacer; Cook, Brant; Lim, Heather; Estabrook, Polly

doi:10.1109/tap.2018.2874512

Cited by 43 publications

(15 citation statements)

References 11 publications

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“…Recent developments on the modeling of MTS antennas allow one to carry out an accurate control of the amplitude and phase of the aperture field with sub-wavelength patches printed on a grounded dielectric substrate [10]. However, the use of dielectric substrates might be limiting to withstand harsh environments in space applications [13], [14]. This includes large thermal ranges and high radiation levels.…”

Section: Introductionmentioning

confidence: 99%

Additive Manufactured Metal-Only Modulated Metasurface Antennas

González‐Ovejero

Chahat

Sauleau

et al. 2018

IEEE Trans. Antennas Propagat.

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In metasurface (MTS) antennas, a surface-wave (SW) is gradually transformed into a leaky-wave (LW), owing to the SW interaction with a reactance tensor periodically modulated in the aperture plane. In such antennas, the modulated reactance is typically obtained by sub-wavelength patches printed on a dielectric substrate. As an alternative technology, we propose the use of a class of metal-only MTSs in the synthesis of the reactance tensor. The absence of dielectric is useful to withstand harsh environments in space applications. The proposed element consists of a metallic cylinder with elliptical cross-section, placed on a ground plane and arranged in a square lattice with subwavelength unit-cells. This structure is well suited for fabrication by metal additive manufacturing. We have applied the metal cylinders in the design of a right-handed circularly polarized (RHCP) antenna, with broadside pencil beam at Ka band. The obtained performance has been verified by full-wave simulations. A prototype has been successfully manufactured and measured, showing a good performance.

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Section: Introductionmentioning

confidence: 99%

Additive Manufactured Metal-Only Modulated Metasurface Antennas

González‐Ovejero

Chahat

Sauleau

et al. 2018

IEEE Trans. Antennas Propagat.

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“…Landing systems with terrain relative navigation to touchdown in a small landing ellipse on icy, airless bodies, can be utilized on any of the ocean worlds (though Titan, of course, offers the benefit of a thick atmosphere in which parachutes can be used). Direct-to-Earth communications has been developed for the Europa Lander mission concept (Chahat et al 2018), and will also Fig. 4 The past, present, and possible future exploration of candidate ocean worlds.…”

Section: Conclusion and Pathways For The Systematic Exploration Of Ocmentioning

confidence: 99%

On the Habitability and Future Exploration of Ocean Worlds

et al. 2020

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Liquid water oceans are now predicted to exist beneath the icy shells of numerous worlds in the outer solar system. These ocean worlds are prime targets in our search for evidence of life beyond Earth, and specifically extant life. Here we review the conditions that may lead to several of these worlds being habitable, and provide a framework for the future exploration of these astrobiologically compelling targets.

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“…More recently, a new all-metal patch array was developed for a potential Europa Lander [14] (see Fig. 6).…”

Section: B Medium Gain Antennasmentioning

confidence: 99%

Advanced CubeSat Antennas for Deep Space and Earth Science Missions: A review

Chahat

Decrossas

González‐Ovejero

et al. 2019

IEEE Antennas Propag. Mag.

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Small satellites provide low cost access to space and they have historically been used for flight technology demonstrations and limited function space science activities. Novel antenna technologies have enabled high performance smallsat telecom, science in earth orbit, and the first Cubesat mission to Deep Space. Over the past 5 years, technologists at the Jet Propulsion Laboratory have designed, tested and successfully flown these innovative and enabling Smallsat antennas. This paper describes these innovations and their impact on smallsat performance for recent and future NASA missions.

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All-Metal Dual-Frequency RHCP High-Gain Antenna for a Potential Europa Lander

Cited by 43 publications

References 11 publications

Additive Manufactured Metal-Only Modulated Metasurface Antennas

Additive Manufactured Metal-Only Modulated Metasurface Antennas

On the Habitability and Future Exploration of Ocean Worlds

Advanced CubeSat Antennas for Deep Space and Earth Science Missions: A review

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