Mechanically steered tracking antenna for land mobile satellite communications

Kuramoto, A.; Yamane, Tsuyoshi; Endo, Nobuhiro

doi:10.1109/aps.1988.94341

Cited by 12 publications

(5 citation statements)

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“…Most recent decades of the developed antenna system for vehicle-based applications are impractical since their design, based on mechanical steering that makes them extremely bulky. This type of antenna system is heavyweight and high power consumption as well as low tracking-speed owing to the use of electric motors responsible for mechanical steering (Kuramoto et al, 1988, Huang & Densmore, 1991, Jongejans et al, 1993, Strickland, 1995. An alternative solution is a planar phased array antenna which performs beam steering by electronic means (Nishikawa et al, 1989, Ohmori et al, 1990, Alonso et al, 1996, Konishi, 2003.…”

Section: Design Of Vehicle-mounted Antenna Systemmentioning

confidence: 99%

Antenna System for Land Mobile Satellite Communications

Basari¹,

Saito²,

Takahashi³

et al. 2010

Satellite Communications

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Section: Design Of Vehicle-mounted Antenna Systemmentioning

confidence: 99%

Antenna System for Land Mobile Satellite Communications

Basari¹,

Saito²,

Takahashi³

et al. 2010

Satellite Communications

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“…There are some solutions to track the satellite. First, a movable carrier [1] can mechanically adjust the azimuth and elevation angles of the antenna; this method has high performance, but there are some problems such as slow tracking speed and complicated structure. A second solution is to use a phased array [2] to form a high-gain beam; the electrically controlled beam can track the satellite very fast, but the antenna system requires high-performance components and expensive equipment.…”

Section: Introductionmentioning

confidence: 99%

Sectoral Conical Beam Former for a 2 $\times$ 2 Array Antenna

Kim

Park

2009

Antennas Wirel. Propag. Lett.

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We propose a switched feed network for a 2 2 array antenna to form a sectoral conical beam. The proposed feed network, which is a symmetrical structure, consists of four 90 hybrids, a crossover, and four 90 delay lines. The prototype feed network and a 2 2 array antenna were fabricated on microstrip structures. The performance of the feed network was verified by measuring the radiation patterns at the center frequency of 2.57 GHz. The maximum radiation was measured at the 45 elevation and at the 45 , 135 , 225 , and 315 azimuth angles, depending on the choice of the input port of the feed network.Index Terms-2 2 array antenna, 90 hybrid, crossover, feed network.

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“…Three typical antennas are often used for satellite ground stations: mechanically steered reflector antennas, electronically steerable arrays, and microwave lens antennas. Although mechanically steered reflectors are commonly used for satellite communication [1][2][3] , electronically steerable arrays are the optimum choice for the application as they have the following advantages: multiple simultaneous beams, low life cycle cost, flexible beam control, low sidelobe, etc [4] . As the hemispherical coverage required, there are only three main type array architectures are suitable: multi-planar arrays, curved surface or conformal arrays and lens arrays [5] .…”

Section: Introductionmentioning

confidence: 99%

Occultation Judgment for the Hemispherical Coverage Multi-Planar Arrays Antenna

Hao¹,

Pan²,

Cheng³

2014

AMM

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A flexible hemispherical coverage array antenna based on multi-planar arrays is proposed to meet the growing demands for multi-target TT&C. The advantages and disadvantages of multi-planar arrays and dome phased in engineering implement are compared. Meanwhile, the influence of different number of plane arrays on antenna pattern is analyzed. For the purpose of interference suppression a novel beamforming method by adding constraint conditions is analyzed to enhance the performance of antenna for TT&C system. Considering the influence of occultation effect on the antenna performance, an effective occultation algorithm is presented. Firstly, the faces in bright area are projected on the plane that is perpendicular with the direction of receiving wave. Secondly, adopting the principle of line segment intersection, the intersect relationship of projective planes is determined. Finally, the facets shadowing relationship is judged by the overlapping and depth-of-view of facets along the receiving wave direction. Theoretical analyses and simulation results show that the antenna has approximate uniform gain beampattern in different steered angle and the occultation algorithm is feasible and effective.

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Mechanically steered tracking antenna for land mobile satellite communications

Cited by 12 publications

References 0 publications

Antenna System for Land Mobile Satellite Communications

Antenna System for Land Mobile Satellite Communications

Sectoral Conical Beam Former for a 2 $\times$ 2 Array Antenna

Occultation Judgment for the Hemispherical Coverage Multi-Planar Arrays Antenna

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