A tunable 140GHz analog phase shifter with high linearity performance
A tunable 140GHz analog phase shifter with high linearity performance
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具有高线性度性能的可调谐 140GHz 模拟移相器
DOI：
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发表时间：
2012
期刊：
影响因子：
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通讯作者：
I. Kallfass
中科院分区：
文献类型：
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作者：
F. Thome;S. Diebold;M. Schlechtweg;A. Leuther;O. Ambacher;I. Kallfass
介绍了一种适用于140 GHz附近的模拟移相器。MMIC基于我们内部的100 nm InGaAs mHEMT技术，芯片尺寸为1 mm 2。该电路使用两个四分之一波长的传输线和两个可调阻抗的控制电压。因此，信号相位可以无级控制，最大偏移约60°。在整个调谐范围内，增益涟漪小于0.3dB，移相器的转换增益约为-3.5dB。由于其无源拓扑结构，该电路表现出非常高的线性度。
An analog phase shifter for applications around 140GHz is presented. The MMIC is based on our in-house 100nm InGaAs mHEMT technology and has a chip size of 1mm2. The circuit uses two quarter-wavelength transmission lines and two tunable impedances governed by a control voltage. As a result, the signal phase can be controlled stepless with a maximum shift of about 60°. Over the whole tuning range the gain ripple is less than 0.3dB and the phase shifter has a conversion gain of about -3.5dB. Because of its passive topology the circuit shows a very high linearity.