X-Band Choke Ring Horn Telecom Antenna for Interference Mitigation on NASA’s SWOT Mission

Amaro, Luis R.; Harrell, Jefferson A.; Wang, Charles; Estabrook, Polly; Butman, S.

doi:10.1109/tap.2016.2546298

Cited by 22 publications

(16 citation statements)

References 7 publications

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“…We remark that for what is relevant to the prototype presented in this section, to the best of our knowledge, this is the first proposed realization of a MTS sector isoflux antenna in the open literature. Isoflux apertures are commonly employed for LEO satellites and can be obtained by choke ring horns 44 . The advantage in implementing a sectorial isoflux is anyway concerned with the possibility of reaching considerably higher gains.…”

Section: Realization and Measurementsmentioning

confidence: 99%

Metasurface Antennas: New Models, Applications and Realizations

Faenzi

Minatti

Ovejero

et al. 2019

Sci Rep

192

111

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This paper presents new designs, implementation and experiments of metasurface (MTS) antennas constituted by subwavelength elements printed on a grounded dielectric slab. These antennas exploit the interaction between a cylindrical surface wave (SW) wavefront and an anisotropic impedance boundary condition (BC) to produce an almost arbitrary aperture field. They are extremely thin and excited by a simple in-plane monopole. By tailoring the BC through the shaping of the printed elements, these antennas can be largely customized in terms of beam shape, bandwidth and polarization. In this paper, we describe new designs and their implementation and measurements. It is experimentally shown for the first time that these antennas can have aperture efficiency up to 70%, a bandwidth up to 30%, they can produce two different direction beams of high-gain and similar beams at two different frequencies, showing performances never reached before.

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Section: Realization and Measurementsmentioning

confidence: 99%

Metasurface Antennas: New Models, Applications and Realizations

Faenzi

Minatti

Ovejero

et al. 2019

Sci Rep

192

111

View full text Add to dashboard Cite

show abstract

“…Because in some applications, helix length can be long while its diameter is quite small which can make this antenna vulnerable to the vibration loads. In [11], X-Band choke ring horn antenna was designed and manufactured to use on SWOT mission of NASA as indicated by Chahat et al The designed antenna has isoflux radiation pattern with circular polarization at X-Band. Another X-Band isoflux antenna design was presented by Fallahzadeh et al in [12] to obtain a maximum gain at 62.5 0 elevation angle of the antenna.…”

Section: Design Of Polyrod Antenna Having Isoflux Radiation Charactermentioning

confidence: 99%

“…To avoid complexity, additional power consumption, and lower reliability, passive isoflux antennas are usually preferred. Therefore, there are many studies for antennas that have isoflux radiation characteristics in the open literature [3][4][5][6][7][8][9][10][11][12]. Huang presented that one can obtain a conical shaped beam using higher-order mode excitation of circular microstrip antenna in [7].…”

Section: Introductionmentioning

confidence: 99%

Design of polyrod antenna having isoflux radiation characteristic for satellite communication systems

Akan

2020

International Advanced Researches and Engineering Journal

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In satellite communication, link margin and therefore antenna radiation characteristics are key factors to ensure providing a robust communication link between space and ground segment. For telemetry/telecommand and payload data transfer, isoflux antennas are employed widely in satellite communication systems to direct electromagnetic wave efficiently. To decrease complexity and manufacturing cost, simple antenna structures are preferred. In this study, after a detailed literature survey, a polyrod antenna has been designed to use in the space segment of Low Earth Orbit satellite communication subsystem. The proposed polyrod antenna has maximum gain at about 60 0 elevation angle of the antenna. Moreover, its impedance bandwidth is 750MHz (11%) that is fairly adequate to use in high data rate transmitters. By using CST Microwave Studio TM which is a commercially available 3-D electromagnetic time-domain solver, directivity, gain, axial ratio for elevation plane at X-Band, and return loss characteristic have been presented. Based on the obtained results, the designed polyrod antenna can be used where a conical shaped beam radiation pattern is needed.

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“…The dimensions of the substrate are 35mm x 35mm x 0.1mm. Dodecagon is designed with a circumradius(R) of 10mm.Circumradius(R) and side length(a) of dodecagon are related as (6) Defects with length and width of 8.8mm and 1mm are taken respectively. These defects are placed symmetrically about the feed with distance(d) between them.…”

Section: B Antenna Designmentioning

confidence: 99%

Characteristic Mode Analysis Based X Band Defected Dodecagonal Patch Antenna

Ganji*,

Shaik

2019

IJEAT

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A defected dodecagonal microstrip antenna fed through co-planar waveguide and operating in X-band frequency range(8-12 GHz) is proposed. Characteristic mode analysis is employed in examining the impact of defects on the resonant frequencies and return loss. Contrast in return loss for the suggested antenna with and without defects is dealt through Characteristic mode Analysis. Geometrical aspects of the proposed antenna are 40 mm × 35.5 mm × 0.1 mm. Subtrate material used in design is FR4 with a dielectric constant (εr ) = 4.4 and height (h) = 0.1m. CST Microwave Studio is used to simulate antenna parameters and Characteristic mode analysis. A return loss of -49.5dB at center frequency of 10.12GHz is observed with a fractional bandwidth of 47.6%. Gain of the antenna peaks at 4 dBi in the band of operation.

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X-Band Choke Ring Horn Telecom Antenna for Interference Mitigation on NASA’s SWOT Mission

Cited by 22 publications

References 7 publications

Metasurface Antennas: New Models, Applications and Realizations

Metasurface Antennas: New Models, Applications and Realizations

Design of polyrod antenna having isoflux radiation characteristic for satellite communication systems

Characteristic Mode Analysis Based X Band Defected Dodecagonal Patch Antenna

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