A high temperature resistant antenna

Abstract

The invention relates to a high temperature resistance antenna. The high temperature resistance antenna comprises an antenna body, an antenna cover mounted at an outer side of the antenna body, and a heat capacity expansion vessel arranged on the antenna body. Through the high temperature resistance antenna, the heat capacity expansion vessel integrated with waveguide into one body is employed to absorb heat radiated from a wall of the antenna cover, so a temperature rising rate of the antenna members is reduced, and temperature impact on parts such as a connector is reduced. The high temperature resistance antenna is advantaged in that ingenious layout is realized, the structure is novel, high temperature resistance requirements of the antenna in a narrowed space can be satisfied, electrical performance of the antenna under the high temperature environment is guaranteed to be stable and reliable, and the high temperature resistance antenna has strong practicality and application prospects.

Description

technical field [0001] The invention relates to a high temperature resistant antenna. Background technique [0002] With the rapid development of modern communication and aerospace technology, antennas are used as carriers for radiating and receiving electromagnetic waves. There is an increasing demand for antennas that are miniaturized, conformal to the carrier, and capable of adapting to extreme environments. When modern aircraft fly at high speed, due to the impact of high-speed airflow, the antenna installed on its surface will be in a high-temperature environment for a long time. If it is not thermally protected, the antenna will face the risk of failure due to insufficient high-temperature tolerance. be resolved. [0003] At present, there are few public reports on high-temperature-resistant antennas, mainly focusing on low-frequency, low-speed and other civilian fields. [0004] Patent CN202977726U ("high temperature resistant antenna") uses a radome made of high te...

AI Technical Summary

Problems solved by technology

Although this method can significantly improve the high-temperature resistance characteristics of the antenna, it is only suitable for low-frequency antennas, and the loss of high-frequency antennas cannot be ignored, or even completely impervious to waves.

[0005] Patent CN105057826A ("A Vacuum Brazing Method for Radio Fuze Antenna Radiator") introduces a vacuum brazing method for high-temperature-resistant fuze antennas, but does not describe the principle design of the antenna and the method of enhancing high-temperature resistance

[0006] In 2013, the document "Research on Ka-band Wide Beam High Temperature Dielectric Antenna" published in the journal "Proceedings of the 2013 National Microwave and Millimeter Wave Conference" proposed a dielectric rod- Resonator antenna, the antenna has better thermal insulation performance and better electrical performance, but the antenna size is large, the installation does not meet the aerodynamic requirements, and it is not suitable for antennas with tilted beams

The antenna has a large loss and is difficult to apply in the millimeter wave band

In addition, the ceramic substrate is hard and cannot conform to the carrier

[0008] At present, there are few reports on the research field of high-temperature-resistant antennas, so it is increasingly important to study high-temperature-resistant antennas that are easy to implement, low sidelobes, and high radiation efficiency

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