研究了不同厚度的Parylene C型涂层对微波印制线路的幅度和相位影响,涂覆后对幅度的影响比较小,相位的影响稍大;研究了C型涂层在10 GHz以下对微带线路的影响,10 μm 涂层在5 GHz以下损耗基本没有变化;研究了C型涂层对10 GHz以下功分器的驻波、隔离、相位、损耗影响,涂覆后相位一致性变化小于3°,损耗增加小于0.1 dB,对驻波、隔离影响也较小;研究了C型涂层对子阵延迟线T/R组件在8 GHz~12 GHz电性能影响,在11 GHz以后明显下降。研究结果表明:10 μm C型涂层对5 GHz以下微带线路的微波性能几乎无影响,对10 GHz左右微带线路影响略大,可以用于5 GHz以下微波组件中的微带线路防护。

The amplitude and phase effects of Parylene C coatings with different thicknesses on microwave printing lines are studied. The effect of the coating on the amplitude is relatively small, and the influence of phase is slightly larger. The effect of C coating on microstrip line under 10 GHz is studied, and the loss of 10 μm coating under 5 GHz is basically unchanged. The effect of C coating on the standing wave and isolation of the power splitter under 10 GHz is also studied. The effect of C coating on the electrical performance of the delay line T/R component in 8 GHz~12 GHz is studied, and it decreases significantly after 11 GHz. The results of the study show that the 10 μm C coating has little effect on the micros-trip line under 5 GHz, and has a slightly larger influence on the micro-strip line under about 10 GHz, which can be used for the protection of micro-strip lines in the microwave components below 5 GHz.

TN605