Concept design of a multi-band shared aperture reflectarray/reflector antenna

Spence, Thomas G.; Cooley, Michael; Stenger, Peter; Li, Lihua; Racette, P.; Heymsfield, Gerald M.; McLinden, Matthew

doi:10.1109/array.2016.7832594

Cited by 6 publications

(3 citation statements)

References 1 publication

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“…Therefore, the electric field intensity at each charge point source is influenced by the radiation pattern of the feeder. The amplitude of the induced signal at each charge point source can be defined as in Equation (12), where the radiation pattern of the feeder is assumed by the cosine-q model [32] and the angle between the beam axis of the feeder and each point source is denoted by Θ 𝓃 .…”

Section: Induced Amplitude Calculationmentioning

confidence: 99%

A Simplified Radiation Characteristic Analysis Method for Defocus-Fed Parabolic Antennas in a W-Band Communication System

Kim,

Pyo,

Jung

2024

Applied Sciences

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With increasing interest in the W-band, there is growing focus on parabolic reflector antennas that are known for efficiently inducing high-gain radiation characteristics. There is particular focus on parabolic antennas with diverse defocus-fed applications, including monopulse tracking, multi-beam formation using multiple feeds, and aperture-shared antennas for multi-band operation. Thus, a new simplified method is presented in this paper to analyze the radiation characteristics of defocus-fed parabolic antennas. The presented method is based on the discrete division of a parabolic reflector surface and considers only simplified wave propagation theory and the effect of the scalar function pattern from the feeder. Additionally, array theory is exclusively applied for the analysis of radiation characteristics. Therefore, the presented method uses a very simplified formula to calculate the radiation characteristics of a defocused parabolic reflector antenna. The performance of the presented method was evaluated by comparing the results with commercial EM tools. The results of the analysis confirm the applicability of the presented method for the analysis of defocus-fed parabolic antennas.

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Section: Induced Amplitude Calculationmentioning

confidence: 99%

A Simplified Radiation Characteristic Analysis Method for Defocus-Fed Parabolic Antennas in a W-Band Communication System

Kim,

Pyo,

Jung

2024

Applied Sciences

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“…1 Meanwhile, the parabolic antenna with wide swath and high gain has been applied in the field of large space-borne antenna to cope with the increasingly complex electromagnetic environment. [2][3][4] Therefore, a large parabolic cylindrical deployable truss antenna fulfilling the above requirements is proposed, as shown in Figure 1. The feature that characterises deployable truss antenna is high storage rate, light weight and high surface precision.…”

Section: Introductionmentioning

confidence: 99%

Precision estimation of large space-borne parabolic antenna support structure

Chen

Lin

et al. 2022

Advances in Mechanical Engineering

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An accuracy analysis approach – mosaic equivalence approach which is based on the principle of approximate structure substitution, to a large complex spatial mechanism with three-dimensional (3D) paired bearings support joint (PBS-joint) clearance is presented to effectively estimate the support structure precision of large parabolic space-borne antenna. The analysis suggests when all the PBS-joints equipped with Metric 628/6 bearings in standard clearance, the surface precision of support structure can obtain relatively high accuracy with a 99.73% probability that root mean square (RMS) was kept in (0.3275, 0.7673) mm and peak-to-valley (PV) was kept in (0.8806, 1.8178) mm. The solution of deviation configuration under a large complex spatial mechanism using the proposed mosaic equivalence approach can be transformed into that under a mosaiced structure of its simple sub-mechanisms. As a result, the high-dimensional coupling between the deviation configuration decision variables can be effectively avoided. Besides, the constraint equations of large complex mechanisms with the PBS-joint 3D clearance can be simplified. This method lays a foundation for reducing the manufacturing cost and risk of large-diameter, high-precision satellite antennas. It has essential engineering value.

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“…To the best knowledge of us, there are mainly three common methods to realize multiband-characteristics for a reflector antenna: using multiple off-set horns or active electronically scanned arrays reflected by respective sub-reflectors, [2][3][4] adopting frequency selective surfaces (FSS) as its sub-reflectors [5][6][7] with two horns placed to both sides of it, and employing only a single multiband feed horn [8][9][10][11][12][13][14][15][16][17] in a reflector antenna. Comparing with the former solutions, designing a multiband horn comes to a more suitable candidate in the demand for simplicity.…”

Section: Introductionmentioning

confidence: 99%

A compact feed horn with wide‐distributed operating bands of Ku/Ka/W

Fang

Wang

et al. 2020

Int J RF Microw Comput Aided Eng

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This paper presents a design of a compact tri‐band feed horn for reflector, which has sufficient wide‐distributed operating bands at 14.5, 35, and 94 GHz. A single cavity is used to downsize and simplify the whole structure, replacing multiple transition sections, or dielectric rods. To maintain a good isolation, two 3‐order low‐pass filters are applied in the waveguide ports of Ku/Ka‐band respectively, meanwhile retaining a good coupling and minimal destruction on transmission modes. The prototype of the proposed tri‐band feed horn is fabricated and measured, showing an adoptable candidate for multiband reflector antennas.

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Concept design of a multi-band shared aperture reflectarray/reflector antenna

Cited by 6 publications

References 1 publication

A Simplified Radiation Characteristic Analysis Method for Defocus-Fed Parabolic Antennas in a W-Band Communication System

A Simplified Radiation Characteristic Analysis Method for Defocus-Fed Parabolic Antennas in a W-Band Communication System

Precision estimation of large space-borne parabolic antenna support structure

A compact feed horn with wide‐distributed operating bands of Ku/Ka/W

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