Design method for offset shaped dual-reflector antenna with an elliptical aperture of low cross-polarisation characteristics

Aoki, K.; Miyahara, Norio; Makino, Shigeru; Urasaki, Shuji; Katagi, Takashi

doi:10.1049/ip-map:19990393

Cited by 11 publications

(4 citation statements)

References 2 publications

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“…where, Ck is the optical path length (constant). r and x will be solved by (1), thus obtaining the sub-reflector curve in the minor axis plane 0 () , and () f  into (1), and replacing y for x in (1).…”

Section: A Shaping Of Main-and Sub-reflector Curves In Major and Minor Axis Planesmentioning

confidence: 99%

“…With the rapid development of satellite communication technology, the demand for satellite mobile communication systems is increasing rapidly. As an essential component, the antenna for satellite communication on the move is required to be not only low profile, but also high gain, low side-lobe level, low cross-polarization, and even multi-band compatibility [1]- [3]. There are four main types of antenna with low profile for satellite communications on the move, a planar waveguide array antenna [4], phased array antenna [5], [6], Luneburg lens antenna [7] and elliptical beam reflector antenna [8].…”

Section: Introductionmentioning

confidence: 99%

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Optimal Design of Elliptical Beam Cassegrain Antenna

Liu

Zhou

et al. 2021

IEEE Access

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An optimal design method of elliptical beam Cassegrain antenna based on differential evolution with global and local neighborhoods algorithm is proposed to achieve high efficiency, low sidelobe, and low profile at Ku/Ka dual band. A rapid shaping method of elliptical beam antenna is given by applying the algorithm of steepest descent. Constraining of the first sidelobe level, antenna efficiency is optimized with only 17 variables, where aperture field distribution functions in the major and minor axis planes are parameterized by Non-uniform rational B-spline curves, and the transition function is expressed with a sinusoidal function. A prototype of optimized antenna with an aperture of 630mm×1150mm is fabricated and measured. The measured results show that the total efficiency is greater than 54.5%, and the first sidelobe levels are lower than -14.2dB across the Ku/Ka dual-band, which agree well with simulated ones. It is verified that the optimal design method is very effective.

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Section: A Shaping Of Main-and Sub-reflector Curves In Major and Minor Axis Planesmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Optimal Design of Elliptical Beam Cassegrain Antenna

Liu

Zhou

et al. 2021

IEEE Access

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“…The paper presents a configuration with a variable focal distance which can convert the cone beam due to the feed into an elliptic beam due to the main reflector with a constant illumination angle from the feed to the sub-reflector edge and also a constant illumination taper at the main reflector edge. As a result, high efficiency can be obtained [1][2][3][4][5].…”

Section: Introductionmentioning

confidence: 99%

Design Method of the Ring-Focus Antenna With a Variable Focal Distance for Forming an Elliptic Beam

Zhang¹

2008

PIER Letters

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“…The case of two reflectors producing field transformations that are spherical-to-planar in wavefront has been a subject of much fruitful study [1]- [8], with applications including the design of high-gain antennas for radioastronomy [9] and the deep-space network [10], compact-range illuminators for antenna measurements [11] and elliptical-beam antennas for satellite communications [6], [7]. A limitation of the dual-reflector system is that only a limited range of power-pattern Manuscript transformations and offset-fed configurations can be realized, particularly when low cross polarization in the field transformation is required.…”

Section: Introductionmentioning

confidence: 99%

Ray-Transformation Conditions and Shaped-Reflector Solutions for Three-Reflector Optics Without Cross Polarization

Hay

2007

IEEE Trans. Antennas Propagat.

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Reflector synthesis in geometric optics is extended to three-reflector systems producing field transformations that are spherical-to-planar in wavefront, of a prescribed form in power pattern and zero in cross polarization. Necessary and sufficient conditions for the existence of solutions are derived in terms of the input-to-output ray transformation and the surface of either the input or output reflector. A subset of the conditions, for a class of non-unique solutions, is interpreted geometrically in terms of the principal directions of the ray transformation and the lines of field polarization and wavefront curvature. These conditions are then used to derive integral solutions for offset-fed reflectors with any prescribed rotationally-symmetric power-pattern transformation. The reflector solutions are shown to exist for a continuous range of offset parameters, take the form of congruences of ellipses and include a special case where the main reflector is paraboloidal. Low-aberration solutions satisfying Abbe's sine condition are obtained in terms of standard functions. Illumination-enhancing solutions illustrate a possible application to compact-range illuminators for antenna measurements.

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Design method for offset shaped dual-reflector antenna with an elliptical aperture of low cross-polarisation characteristics

Cited by 11 publications

References 2 publications

Optimal Design of Elliptical Beam Cassegrain Antenna

Optimal Design of Elliptical Beam Cassegrain Antenna

Design Method of the Ring-Focus Antenna With a Variable Focal Distance for Forming an Elliptic Beam

Ray-Transformation Conditions and Shaped-Reflector Solutions for Three-Reflector Optics Without Cross Polarization

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