Astronavigation extravehicular power divider

Abstract

The invention discloses an astronavigation extravehicular power divider and belongs to the technical field of microwave devices. The astronavigation extravehicularpower divider comprises a cavity andcouplers connected to two opposite sides of the cavity, wherein a circuit board is arranged in the cavity, anti-radiation reinforcing layers are arranged on the upper side and the lower side of the cavity, and each anti-radiation reinforcing layer consists of an outer layer and at least one inner layer; the anti-radiation reinforcing layers on the upper side and the lower side are fixed through adense screw group composed of a plurality of screws, and the materials of the screws are the same as those of the outer layers of the anti-radiation reinforcing layers. According to the power divider,due to the fact that a special suspension structure is adopted, the power divider can adapt to the limit temperature ranging from -145 DEG C to 125 DEG C outside an aerospace cabin and the magnitudeof the total radiation dose of 30Mrad (Si) for a long time, and the working requirement for space time (100000 h) can be met; meanwhile, the application field and range of the power divider are expanded; and the application field of new materials, especially ultra-wide temperature materials, can be expanded.

Description

technical field [0001] The invention relates to the technical field of microwave devices, in particular to an aerospace power divider outside the cabin. Background technique [0002] In recent years, ultrashort wave and microwave systems have been practically applied in various commercial aerospace vehicle projects in my country. Usually, ultrashort wave and microwave systems are characterized by the synthesis and distribution of multi-channel signals to realize the array function and realize the in-phase signal transmission of multiple antennas. The volume of the satellite cabin is limited, such as moving the power divider outside the cabin, such as hanging on the antenna, which reduces the difference in amplitude and phase caused by the transmission line, can flexibly design the antenna, expand the application range of the antenna, and improve the receiving sensitivity and Ground coverage area. [0003] However, if the power divider designed and manufactured by the tradi...

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Problems solved by technology

[0003] However, if the power divider designed and manufactured by the traditional method is moved outside the aerospace cabin, there are the following problems: (1) The power divider using magnetic materials cannot be used in an environment lower than -65°C, and it cannot be applied to aerospace vehicles The temperature environment outside the cabin; (2) Due to the radiation sensitivity of the dielectric material, it cannot be used in the radiation environment for a long time; (3) Even if the radiation resistance is strengthened, it is generally used for the radiation resistance of the simple and symmetrical power divider However, there is no report on the anti-radiation reinforcement of complex and asymmetric structures such as a one-point three-power splitter structure

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