采用有源反馈的MMIC线性化放大器

IEEE 1993 Microwave and Millimeter-Wave Monolithic Circuits Symposium Digest of Papers Pub Date : 1993-06-14 DOI:10.1109/MCS.1993.247464

J. Pedro, J. Perez

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引用次数: 12

摘要

讨论了一种单片2.4 mm*2.4 mm MMIC(单片微波集成电路)芯片，该芯片包括一个l波段调谐MESFET主放大器和一个非线性反馈路径，以提高其载波到互调余量(C/I)。该电路采用放大器互调失真(IMD)消除的概念，将基于mesfet的小面积线性化器直接应用于主有源器件的终端。在超过12%的相对带宽下，线性化器提供了15 db的C/I改进。

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An MMIC linearized amplifier using active feedback

A single 2.4-mm*2.4-mm MMIC (monolithic microwave integrated circuit) chip that includes an L-band tuned MESFET main amplifier and a nonlinear feedback path to improve its carrier-to-intermodulation margin (C/I) is discussed. The circuit uses the concept of amplifier intermodulation distortion (IMD) cancellation, in which a small-area MESFET-based linearizer is directly applied to the terminals of the main active device. The linearizer provides a 15-dB improvement of C/I, over a relative bandwidth of more than 12%.<>

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IEEE 1993 Microwave and Millimeter-Wave Monolithic Circuits Symposium Digest of Papers

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