Satellite-borne high-gain broadband miniaturized composite antenna
A compound antenna and high-gain technology, applied in the field of antennas, can solve the problems of space-borne antenna electrical effective aperture and height restrictions, and achieve the effects of expanding bandwidth, reducing antenna height, and reducing overall structural size
Active Publication Date: 2021-12-31
SHANGHAI SPACEFLIGHT INST OF TT&C & TELECOMM
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- Application Information
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Problems solved by technology
However, due to the narrow space of current launch vehicles and satellites, people have put forward strict restrictions on the electrical effective aperture and height of spaceborne antennas
Method used
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[0032] The present invention will be described in detail below in conjunction with specific embodiments. The following examples will help those skilled in the art to further understand the present invention, but do not limit the present invention in any form. It should be noted that those skilled in the art can make several changes and improvements without departing from the concept of the present invention. These all belong to the protection scope of the present invention.
[0033] In order to realize the minimized reconfigurable structure of the photoconductive switch and improve the operating reliability and effective life of the switch, the present application provides the following technical solutions.
[0034] Such as figure 1 As shown, this application provides a space-borne high-gain broadband miniaturized composite antenna, including two pairs of variable-angle logarithmic periodic oscillators 1, a strong coupling ring 2 composed of two semicircular metal rings, and...
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The invention provides a satellite-borne high-gain broadband miniaturized composite antenna, which comprises a plurality of log-periodic oscillators and feed coaxial cables, wherein the plurality of log-periodic oscillators are crossed pairwise, and the cross section of each log-periodic oscillator is of an inverted V-shaped structure with a narrow upper part and a wide lower part; and the feed coaxial cables are respectively attached to the two adjacent log-periodic oscillators and feed the oscillators through electromagnetic coupling. According to the invention, log-periodic oscillator antennas with variable field angles are arranged on a metal bottom plate in a crossed manner, so that the gain of the antenna is improved; a metal coupling ring structure is introduced, so that the bandwidth of a low-frequency band of the antenna is widened and the stability of an in-band directional diagram of the antenna is improved on the premise of not additionally increasing the outer envelope size of the antenna; and the structural strength of the antenna is improved by adopting a high-strength fixing rope on the premise of not increasing the weight and the size. The antenna has good electrical properties of high gain and wide frequency band, and good mechanical properties of low profile, miniaturization, high overall structural rigidity and the like.
Description
technical field [0001] The invention relates to the field of antennas, in particular to a space-borne high-gain broadband miniaturized composite antenna. Background technique [0002] Antennas are important equipment for satellite payload systems. In electronic systems such as satellite-borne communication and measurement and control, antennas often occupy a large part of the volume and space. With the rapid development of electronic technology, satellite loads are developing towards integration and multi-function. Correspondingly, the antenna requires higher gain and wider bandwidth in electrical performance, and miniaturization in mechanical performance. and low-profile features. [0003] The logarithmic periodic antenna is a broadband directional antenna, which has the advantages of wide frequency bandwidth, high gain, simple structure, low cost, light weight, and easy polarization control. It is usually used as a feed source for parabolic, angular reflector, or lens ant...
Claims
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Login to View More IPC IPC(8): H01Q1/36H01Q1/50
CPCH01Q1/36H01Q1/50Y02D30/70
Inventor 苏醒孔令兵叶声马岩冰李东颖李标欧阳尚荣
Owner SHANGHAI SPACEFLIGHT INST OF TT&C & TELECOMM