A 12–40 GHz low phase variation highly linear BiCMOS variable gain amplifier
A 12–40 GHz low phase variation highly linear BiCMOS variable gain amplifier
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DOI：
10.1109/iscas.2013.6572047
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发表时间：
2013-05
期刊：
影响因子：
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通讯作者：
S. Sah;Siqi Zhu;T. N. Nguyen;Xinmin Yu;D. Heo
中科院分区：
文献类型：
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作者：
S. Sah;Siqi Zhu;T. N. Nguyen;Xinmin Yu;D. Heo
介绍了一种采用0.18 μ m BiCMOS工艺设计的高线性度超宽带低相位变化可变增益放大器（VGA）。建议的VGA使用新颖的电流导引增益块，以实现低相位变化的增益步长。VGA在整个12-40 GHz频率范围内的实测增益范围为6.3-8.1 dB，相位变化为0.2-0.78 °/dB。该VGA在26 GHz时实现了0 dBm的模拟输入P1 dB，而1.5 V电源功耗仅为20.5 mW，有效面积仅为0.05 mm 2。VGA的品质因数是当前最先进VGA的7.6倍。
An ultra-wideband low phase variation variable gain amplifier (VGA) in 0.18/am BiCMOS process with high linearity is presented in this paper. The proposed VGA uses novel current steering gain blocks to achieve gain steps with low phase variation. The VGA has a measured gain range of 6.3-8.1 dB over the entire frequency range of 12-40 GHz and shows a phase variation of 0.2-0.78 °/dB. The VGA achieves a simulated input P1dB of 0 dBm at 26 GHz while consuming only 20.5 mW from 1.5 V power supply and occupies an active area of just 0.05 mm2. The VGA shows 7.6 times better Figure of Merit as compared to current state-of-the-art VGAs.