Stacked type deployable symmetric parabolic antenna main reflector
A parabolic antenna and main reflector technology, applied in antennas, electrical components and other directions, can solve problems such as large storage ratio
Inactive Publication Date: 2018-04-10
CHINA ELECTRONICS TECH GRP NO 39 RES INST
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Problems solved by technology
[0005] In order to solve the problem that the storage ratio of the existing symmetrical parabolic antenna reflectors is relatively large, the present invention proposes a stackable expandable symmetrical parabolic antenna main reflector
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[0016] Embodiments of the present invention are described in detail below, examples of which are shown in the drawings, wherein the same or similar reference numerals designate the same or similar elements or elements having the same or similar functions throughout. The embodiments described below by referring to the figures are exemplary and are intended to explain the present invention and should not be construed as limiting the present invention.
[0017] In describing the present invention, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", " Orientation indicated by rear, left, right, vertical, horizontal, top, bottom, inside, outside, clockwise, counterclockwise, etc. The positional relationship is based on the orientation or positional relationship shown in the drawings, which is only for the convenience of describing the present invention and simplifying the description, rather than ...
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The invention provides a stacked type deployable symmetric parabolic antenna main reflector, which comprises a sector, a feed source system and a center body. The sector is evenly divided into N sections. A driving mechanism is arranged in the center body. The roots of all the sections are connected in the center body. Among all the N sections, one section is a fixed section, while all the rest sections are movable sections. The roots of all the movable sections are connected with the driving mechanism in the center body and conduct the spiral lifting motion under the driving effect of the driving mechanism around the central axis of the center body. According to the invention, the influence factors of the storage ratio of the deployable scheme of the invention are composed of the caliberof an antenna, the size of the center body, the radial size of the sections and the like. The radial size of the sections is reduced as the number of section blocks is increased. Meanwhile, the heightof the center body is increased as the number of section blocks is increased. The radial size of the center body is increased as the caliber of the antenna is increased. As can be seen from theoretical analysis, the storage ratio of the deployable scheme of the invention can be controlled within 0.1. In consideration of engineering practice, in general, the storage ratio can be in the range of 0.2 to 0.3. Therefore, the storage ratio of the deployable scheme of the invention is superior to those of existing known deployable schemes.
Description
technical field [0001] The invention relates to the technical field of space antennas, in particular to a main reflector of a stackable expandable symmetrical parabolic antenna. Background technique [0002] Symmetrical parabolic antenna refers to an antenna in which the main transmitter is a parabola formed by the rotation of the parabolic generatrix relative to the central axis. The main types are feedforward parabolic antenna, Cassegrain antenna, Gregorian antenna and ring focus antenna. [0003] In some specific occasions, such as space environment, it is necessary to fold the main reflector of the symmetrical parabolic antenna into a smaller folded size so that it can be stored in a smaller space, and then unfolded to the working size before work. This type of symmetrical parabolic antenna is called a deployable symmetrical parabolic antenna. [0004] An important index in the design of the deployment scheme of the main reflector of a symmetrical parabolic dish is the ...
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IPC IPC(8): H01Q15/16
CPCH01Q15/161
Inventor 李洪超万人民袁岁维沈军龙
Owner CHINA ELECTRONICS TECH GRP NO 39 RES INST