A Design Method of Active Phased Array Antenna Z-Channel Cold Plate Based on Component Layout

Abstract

The invention discloses a design method of a Z-type flow cold plate of an active phased array antenna based on layout of devices. The method comprises the first step of determining the positions of all the heating devices, the second step of determining the longitudinal flow position and the transverse flow position of a Z-type flow, the third step of determining a geometric model of the Z-type flow of a T / R assembly, the fourth step of calculating the temperature distribution and pressure drop of a linear array, and the fifth step of judging whether the Z-type flow cold plate meets a thermal design index of the antenna or not. According to the design method of the Z-type flow cold plate, whether the Z-type flow cold plate meets the thermal design requirement or not is judged by calculating the temperature distribution of the array. Compared with a traditional Z-type flow, the Z-type flow designed according to the method has the advantages that the better heat dissipation capability is achieved, the highest temperature of the heating devices is lower, the pressure drop of the cold plate is reduced effectively, the thermal design index of the antenna can be met, the pump power can also be reduced remarkably, and the working capability of an antenna platform is enhanced. According to the method, corresponding Z-type flows can be designed for the distribution of the different heating devices so as to meet the requirement for the temperature of the active phased array antenna, and the method has the actual engineering significance.

Description

technical field [0001] The invention relates to the technical field of antennas, in particular to a design method for a Z-shaped channel cold plate oriented to an active phased array antenna. Background technique [0002] Due to the high concentration of components and high operating temperature of active phased array radar, thermal design has always been one of the key issues in phased array radar design. The T / R component is the core part of the active phased array antenna, including power amplifiers, low-noise amplifiers, attenuators and other heat-generating components, and the antenna array is densely covered with a large number of T / R components, the heat generated Very large, the heat flux of the antenna front rises sharply in the working environment. In addition, the high-power amplifier in the T / R component is sensitive to temperature, and the high-temperature working environment has a serious impact on the performance of the high-power amplifier, which has a very ...

AI Technical Summary

Problems solved by technology

However, the traditional Z-shaped flow channel is prone to the problem of large temperature difference of heating devices in practical applications, resulting in the failure of high-power amplifier devices to achieve a good heat dissipation effect, which will have a great impact on the overall heat dissipation effect of the cold plate

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