Generating Contoured Beams With Single-Shaped Reflectors Using a Iterative Field-Matrix Approach

González-Valdés, Borja; Martínez-Lorenzo, José Ángel; Rappaport, Carey M.; Pino, A.G.

doi:10.1109/lawp.2008.2009556

Cited by 23 publications

(17 citation statements)

References 13 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The antenna is constructed by a series of triangular facets with wire mesh as reflective surface. The surface cannot be described using orthogonal polynomials as proposed in [23], and other methods in [22,25] also show their limits in this synthesis.…”

Section: Contour Beam Synthesis Technologymentioning

confidence: 99%

“…A shaped faceted reflector antenna which covers the shape of the required coverage region on the earth with the desired directivity is required for the next concept design. There are some methods for synthesising contour beams such as in [21][22][23][24][25]. In [22], the reflector is divided into an array of square elements in the aperture plane and by optimising the element phase distribution, the element coordinates are renewed and the pattern is obtained using geometric optics with the steepest descent method.…”

Section: Introductionmentioning

confidence: 99%

“…As for the faceted reflectors, the surface is characterised by discrete nodes and approximated by the flat facets, such that the orthogonal polynomials cannot be used to describe the surface. An iterative-field matrix (IFM) approach is proposed in [25] and applied in generating contour beams with single-shaped reflectors. This approach finds a linear relationship between the local surface distortion and the difference of the nominal and objective far-field patterns.…”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Sensitivity analysis of faceted reflector antennas and a contour beam synthesis technology

Zhang

Duan

Deng

2014

IET Microwaves, Antennas & Propagation

View full text Add to dashboard Cite

Faceted reflectors are widely utilised in the application of satellite deployable antennas. The sensitivity analysis with respect to surface deformation is an essential part in the error evaluation for distorted reflector antennas. In this study, the sensitivity analysis of electrical radiation performance with respect to surface deformation for faceted reflectors is investigated. A contour beam pattern synthesis technology is proposed for the faceted reflector antennas based on sensitivity analysis, with considering the special characteristics of flat facets. Two faceted reflectors are simulated to show their directivity sensitivity with respect to surface nodal displacement, and a contour beam covering the continental United States (CONUS) with the desired directivity is obtained by shaping a single offset faceted reflector antenna.

show abstract

Section: Contour Beam Synthesis Technologymentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Sensitivity analysis of faceted reflector antennas and a contour beam synthesis technology

Zhang

Duan

Deng

2014

IET Microwaves, Antennas & Propagation

View full text Add to dashboard Cite

show abstract

“…Combinations of the modified Jacobi polynomials and the harmonic functions cos n/, sin n/ form a complete set of orthogonal basis functions in the unit circle (3) of the t 2/ plane. Relation (2) ensures that the reflector surface is continuous. Since reflector shaping is performed by adjusting the expansion coefficients, the synthesized reflector has a smooth surface and a well-defined circumference.…”

Section: Reflector Surface Expansionmentioning

confidence: 99%

“…Several demands on reflector antennas in modern applications such as radar systems, satellite communications, and radio astronomy have required the development of complex and accurate synthesis techniques . In comparison with phased array antennas, the main advantage of reflector antennas is their simplicities which avoid use of expensive and weighty beam forming networks .…”

Section: Introductionmentioning

confidence: 99%

Two-dimensional synthesis and optimization of a broadband shaped beam reflector antenna using IWO and PSO algorithms

Dastranj

Abiri

Mallahzadeh

2014

Int J RF and Microwave Comp Aid Eng

View full text Add to dashboard Cite

A new technique for broadband shaped beam reflector antennas synthesis is presented. The surface of the shaped reflector is represented by a set of orthogonal Jacobi-Fourier expansion functions. To achieve a cosecant squared pattern in the elevation plane and a pencil beam in the azimuth plane, the expansion coefficients are optimized using invasive weed optimization and particle swarm optimization algorithms. High accuracy is achieved by combining optimization tools and analysis methods such as physical optics and integral equation. Besides, in the optimization procedures, a complex object function is used to achieve the desired performance over the entire 26-40 GHz operating bandwidth. The simulation results via FEKO and CST Microwave Studio software packages prove the validity and versatility of this technique for solving shaped reflector synthesis problems. There are several features that distinguish this technique from the previous methods. First of all is the wide bandwidth. The second is its ability to shape the radiation patterns in the elevation and azimuth planes simultaneously (two-dimensional synthesis). Moreover, compared with other techniques, the proposed method allows achieving extra desired features such as high directivity, low sidelobe levels, and small ripples in the shaped beam region.

show abstract

Introduction

Duan¹,

Zhang²,

Du³

2020

Springer Tracts in Mechanical Engineering

View full text Add to dashboard Cite

Generating Contoured Beams With Single-Shaped Reflectors Using a Iterative Field-Matrix Approach

Cited by 23 publications

References 13 publications

Sensitivity analysis of faceted reflector antennas and a contour beam synthesis technology

Sensitivity analysis of faceted reflector antennas and a contour beam synthesis technology

Two-dimensional synthesis and optimization of a broadband shaped beam reflector antenna using IWO and PSO algorithms

Introduction

Contact Info

Product

Resources

About