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在以LaAlO3为衬底的钇系高温超导薄膜YBCO基片上,采用并联两个单终端低通原型带通滤波器构成部分互补的滤波器的方式,设计并制作一个四极高温超导连续通带双工器,通带工作频率分别为3~3.5GHz和3.5~4GHz.与常规金属材料制作的双工器相比,体积减少四分之三,插入损耗减少2dB.在液氮温区77K时,高温超导双工器的测试结果为:通带内插入损耗小于0.8dB,通带间带外抑制大于30dB@通带中心频率.为近一步研制高温超导多工器提供了很好的借鉴,对将来高温超导信道化接收机系统的研究和设计具有重要的意义.
On YBCO substrate with high-temperature superconducting yttrium-aluminum oxide based on LaAlO3, a two-terminal single-ended low-pass prototype bandpass filter was used to form a partially complementary filter. A quadrupole high- With diplexer, the passband frequency of 3 ~ 3.5GHz and 3.5 ~ 4GHz respectively.Compared with the duplexer made of conventional metal materials, the volume is reduced by three fourths and the insertion loss is reduced by 2dB.When the liquid nitrogen temperature is 77K , The test results of high temperature superconducting duplexers are as follows: the insertion loss in the passband is less than 0.8dB, the out-of-band rejection between the passbands is greater than 30dB @ the passband center frequency, which provides a good step for developing HTS multiplexer in the next step The reference for the future high temperature superconducting channelized receiver system research and design of great significance.