A Ka-Band InP MMIC 180 degree Phase Switch
A Ka-Band InP MMIC 180 degree Phase Switch
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Ka 波段 InP MMIC 180 度相位开关
DOI：
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发表时间：
2005
期刊：
影响因子：
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通讯作者：
R. Sloan
中科院分区：
文献类型：
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作者：
D. Kettle;N. Roddis;R. Sloan
为欧盟资助的法拉第射电天文项目研制了一种新型Ka波段（26 ~ 36 GHz）180 °相位开关（二相调制器）单片微波集成电路。该集成元件构成了工作温度约为15 K的极低噪声开关辐射计芯片组的一部分。为了最大限度地提高辐射计的灵敏度，使用了晶格匹配磷化铟HEMT技术：辐射计的所有有源组件，除探测器外，都是在单晶片工艺上制造的。设计原则进行了描述，连同建模和测量结果的比较。测试结果表明，平均插入损耗为3.5dB，回波损耗优于10 dB，平均相位差接近170 °。十个？26-36 GHz频段。
A new type of Ka band (26 to 36 GHz) 180 degree phase switch (bi-phase modulator) monolithic microwave integrated circuit has been developed for the EC funded FARADAY radio astronomy project. This integral component forms part of a chip set for a very low noise switching radiometer operating at a temperature of approximately 15 K. To maximize the sensitivity of the radiometer lattice-matched indium phosphide HEMT technology has been used: all of the active components of the radiometer, with the exception of the detectors, have been manufactured on a single wafer process. Design principles are described, together with a comparison of modeled and measured results. The results show an average insertion loss of 3.5 dB, return loss of better than 10 dB and an average phase difference close to 170????10?? the 26-36 GHz band.