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Spaceborne VHF antenna device

An antenna device and satellite-borne technology, which is applied to antennas, antenna arrays, antenna components, etc., can solve the problems of low signal frequency, long wavelength, and large antenna size, and achieve the effect of high adaptability

Inactive Publication Date: 2018-09-04
SHANGHAI ENG CENT FOR MICROSATELLITES
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Compared with other microwave frequency bands, the VHF frequency band has a lower signal frequency and a longer wavelength, so the corresponding antenna size is also larger

Method used

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Examples

Experimental program
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Effect test

Embodiment approach 1

[0026] figure 1 It is a schematic diagram showing the key design technology of the spaceborne VHF antenna device according to the embodiment of the present invention.

[0027] Such as figure 1 As shown, the key design technologies of spaceborne VHF antenna devices are divided into miniaturization design technology for maintaining radiation efficiency, wide beam and omnidirectional beam coverage design technology, polarization reconfiguration and performance expansion enhancement design technology, and resonance narrowband high isolation design 5 key technologies including environmental adaptation and universal design technology.

[0028] When designing the spaceborne VHF antenna device, in order to improve the actual availability of the spaceborne VHF antenna device, it is necessary to minimize the coupling transmission between it and other radio frequency systems to improve the EMC performance of the system, and it is possible to consider reducing the VHF antenna device. Im...

Embodiment approach 2

[0053] In Embodiment 1 above, the space-borne VHF antenna device 1 configured as a linearly polarized antenna device was shown as an example. In Embodiment 2, on the basis of describing the linearly polarized antenna device, it is formed into an array, so that A circular polarization (CP) mode antenna device is formed to further improve the electrical performance of the antenna.

[0054] Such as image 3 As shown, the circularly polarized space-borne VHF antenna device 2 which is the space-borne VHF antenna device 2 according to Embodiment 2 of the present invention is constituted by arraying four above-mentioned space-borne VHF antenna devices 1 . Specifically, arrays are arranged at equal intervals along the X and Y directions on the reflector 201, and the four spaceborne VHF antenna devices 1 in Embodiment 1 are sequentially rotated by 90° to form a quaternary low-profile, lightweight Quantize a planar array. The envelope size of the array is 370mm×370mm. Here, an exampl...

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Abstract

The invention aims at providing a spaceborne VHF antenna device, which is a linearly-polarized spaceborne VHF antenna device with plane deformation loading IFA. The spaceborne VHF antenna device comprises a reflection plate, a feeding unit and an antenna radiation unit, wherein the antenna radiation unit comprises a planar inverted F antenna main body part formed by a left antenna radiation plateand an upper antenna radiation plate and multiple tail antenna radiation plates located at the tail end of the right side of the upper antenna radiation plate; and the feeding unit is arranged betweenthe reflection plate and the upper antenna radiation plate of the antenna radiation unit. While the main electrical performance index requirements of the existing antenna can be met, the spaceborne VHF antenna device has the advantages of miniaturization, light weight, high adaptability to all kinds of satellites (especially microsatellites and micro satellites) and the like.

Description

technical field [0001] The invention relates to a spaceborne VHF antenna device used in a spaceborne communication system. Background technique [0002] The VHF frequency band is the main frequency band of existing satellite data communication, and is widely used in short data communication of various satellites and real-time downloading of important information. Compared with other microwave frequency bands, the VHF frequency band has a lower signal frequency and a longer wavelength, so the corresponding antenna size is also larger. [0003] With the rapid development of aerospace technology, micro-satellites and micro-nano-satellites are more and more widely used, and correspondingly, the size, weight and power consumption of satellites are also decreasing day by day. Therefore, for a VHF antenna using the VHF frequency band as a communication frequency band, the requirements for miniaturization, lightweight design and application of the VHF antenna are increasing. There...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01Q1/36H01Q1/50H01Q15/24H01Q19/10H01Q21/00H01Q1/28
CPCH01Q1/288H01Q1/36H01Q1/50H01Q15/24H01Q19/104H01Q21/0006
Inventor 刘洋戴媛媛李宗德刘勇丁雪静
Owner SHANGHAI ENG CENT FOR MICROSATELLITES
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