A Wideband Frequency-Independent IQ Calibration Scheme With 3-GHz-UGB Amplifiers

IF 4.9 2区工程技术 Q2 ENGINEERING, ELECTRICAL & ELECTRONIC

IEEE Transactions on Circuits and Systems II: Express Briefs Pub Date : 2025-07-16 DOI:10.1109/TCSII.2025.3589886

Yunyou Pu;Wei Li;Qiaoan Li;Xingyu Ma;Hongtao Xu

引用次数: 0

Abstract

This brief presents a wideband in-phase and quadrature-phase (IQ) calibration scheme, which can be embedded into variable gain amplifiers (VGA) or active filter in receivers (RXs). And a double-zero compensated amplifier is also proposed which extends the unit gain bandwidth (UGB) to 3 GHz with the power consumption of only 0.66 mW. After calibrated, the phase error and amplitude error can be lower than 0.2° and 0.04 dB within 160 MHz, respectively. The error vector magnitude (EVM) is improved from 5.7% to 1.3% with 64 QAM and 160-MHz modulated bandwidth.

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基于3ghz - ugb放大器的宽带频率无关IQ校准方案

本文介绍了一种宽带同相和正交相（IQ）校准方案，该方案可以嵌入到可变增益放大器（VGA）或接收机（RXs）中的有源滤波器中。提出了一种双零补偿放大器，将单位增益带宽（UGB）扩展到3ghz，功耗仅为0.66 mW。校准后，在160 MHz范围内，相位误差小于0.2°，幅度误差小于0.04 dB。在64 QAM和160 mhz调制带宽下，误差矢量幅度（EVM）从5.7%提高到1.3%。

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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来源期刊

IEEE Transactions on Circuits and Systems II: Express Briefs 工程技术-工程：电子与电气

CiteScore

7.90

自引率

20.50%

发文量

883

审稿时长

3.0 months

期刊介绍： TCAS II publishes brief papers in the field specified by the theory, analysis, design, and practical implementations of circuits, and the application of circuit techniques to systems and to signal processing. Included is the whole spectrum from basic scientific theory to industrial applications. The field of interest covered includes: Circuits: Analog, Digital and Mixed Signal Circuits and Systems Nonlinear Circuits and Systems, Integrated Sensors, MEMS and Systems on Chip, Nanoscale Circuits and Systems, Optoelectronic Circuits and Systems, Power Electronics and Systems Software for Analog-and-Logic Circuits and Systems Control aspects of Circuits and Systems.