实现43.6dBm OIP3的有源滤波器

2011 IEEE Radio Frequency Integrated Circuits Symposium Pub Date : 2011-06-05 DOI:10.1109/RFIC.2011.5940717

Helen Kim, M. Green, B. Miller, Andrew K. Bolstad, D. Santiago

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引用次数: 4

摘要

在0.13µm SiGe BiCMOS中实现了具有50 Ω缓冲器的有源滤波器，适合作为抗混叠滤波器来驱动高度线性ADC。该6阶切比雪夫滤波器的3db截止频率为28.3 MHz, OIP3为36.5 dBm。非线性数字均衡进一步提高了OIP3到43.6 dBm。测量结果表明，阻带处的抑制为92 dB，增益为49 dB。测量到的带内OIP3为43.6 dBm，比先前发表的设计高19 dB。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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An active filter achieving 43.6dBm OIP3

An active filter with a 50 Ω buffer suitable as an anti-alias filter to drive a highly linear ADC is implemented in 0.13 µm SiGe BiCMOS. This 6^th-order Chebyshev filter has a 3 dB cutoff frequency of 28.3 MHz and achieves 36.5 dBm OIP3. Nonlinear digital equalization further improves OIP3 to 43.6 dBm. Measurements show 92 dB of rejection at the stopband and a gain of 49 dB. The measured in-band OIP3 of 43.6 dBm is 19 dB higher than previously published designs.

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2011 IEEE Radio Frequency Integrated Circuits Symposium

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