DC^6GHz厚膜温度补偿衰减器的设计与制备

Development of thick film temperature compensation attenuator in DC-6 GHz

基于π型衰减网络结构,使用软件HFSS设计了工作频率在DC^6 GHz的温度补偿衰减器,并采用厚膜丝网印刷技术,在质量分数96%氧化铝基板上制备出衰减量为(3±0.5)d B和温度系数为N5(–0.005 d B/d B/℃)的温度补偿衰减器,其体积小(3.68 mm×3.12 mm×0.5 mm),采用SMT安装方式,工作温度范围为–55^+125℃,补偿精度高,每摄氏度补偿–0.005 d B/d B。

Based on a π-attenuation network, the thick film temperature compensation attenuator with work frequency from DC to 6 GHz was designed by using the software HFSS. The attenuator was fabricated by using the technology of thick film screen printing on a 96% mass fraction alumina substrate. Results denote that the attenuation is （3±0.5） dB and the temperature coefficient is N5（0.005 dB/dB /℃）, its size is 3.68 mm×3.12 mm×0.5 mm. The attenuator is installed by SMT processes, which has wide working temperature range （–55–＋125 ℃）. The high precision of compensation can be realized, – 0.005 dB/dB per ±1 ℃.