DC -50 GHz MMIC variable attenuator with a 30 dB dynamic range
DC -50 GHz MMIC variable attenuator with a 30 dB dynamic range
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DC -50 GHz MMIC 可变衰减器，动态范围为 30 dB
DOI：
10.1109/mwsym.1988.22083
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发表时间：
1988
期刊：
影响因子：
--
通讯作者：
H. Kondoh
中科院分区：
文献类型：
--
作者：
H. Kondoh
本文介绍了一种单片微波集成电路（MMIC）FET可变衰减器，其动态衰减范围为30 dB，在DC ~ 50 GHz频带内，最小插入损耗为1.8dB（26.5GHz）和2.6dB（40 GHz）。在任何衰减设置下，相关的输入/输出回波损耗始终大于10 dB。围绕DC参考电路实现的运算放大器反馈方案实现了具有单个控制电压的自动输入/输出阻抗匹配和线性衰减，而没有任何明显的射频（RF）性能退化。最大衰减随频率从DC时的32 dB增加到50 GHz时的42 dB。<<ETX>>
A description is given of a monolithic microwave integrated circuit (MMIC) FET variable attenuator demonstrating a 30-dB dynamic range of attenuation over a DC -50-GHz frequency band with a minimum insertion loss of 1.8 dB at 26.5 GHz and 2.6 dB at 40 GHz. The associated input/output return loss was always greater than 10 dB at any attenuation setting. An operational amplifier feedback scheme implemented around a DC reference circuit enabled automatic input/output impedance matching and linear attenuation with a single control voltage without any noticeable degradation of radiofrequency (RF) performance. The maximum attenuation increases with frequency from 32 dB at DC to 42 dB at 50 GHz.<<ETX>>