45GHz CMOS发射机SoC，带数字辅助功率放大器，可提高64QAM效率

2013 IEEE Radio Frequency Integrated Circuits Symposium (RFIC) Pub Date : 2013-06-02 DOI:10.1109/RFIC.2013.6569604

T. LaRocca, Yi-Cheng Wu, R. Snyder, J. Patel, K. Thai, C. Wong, Yeat Yang, L. Gilreath, Monte K. Watanabe, Hao Wu, Mau-Chung Frank Chang

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引用次数: 12

摘要

提出了一种带数字辅助功率放大器(DAPA)的45GHz 64QAM片上系统CMOS发射机。SoC包括一个7M门ASIC，具有9b可重构符号映射，8X上采样，161tap脉冲形状滤波，IQ不平衡校正和DAPA包络/时间估计。ASIC馈入两个10b IQ电流转向dac和有源IQ调制器。一个独特的变压器分离转换器驱动八个并联组合dapa。该芯片封装在铝制外壳中，具有WR22输出。一个64QAM的信号在45GHz时达到1.8%的EVM, ACPR为33dBc。数据速率450Mbps，集成输出功率超过-10dBm。

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A 45GHz CMOS transmitter SoC with digitally-assisted power amplifiers for 64QAM efficiency improvement

A 45GHz 64QAM system-on-chip (SoC) CMOS transmitter with digitally-assisted power amplifiers (DAPA) is presented. The SoC includes a 7M gate ASIC with 9b reconfigurable symbol mapping, 8X upsampling, 161tap pulse shape filtering, IQ imbalance correction and DAPA envelope/time estimation. The ASIC feeds two 10b IQ current-steering DACs and active IQ modulator. A unique transformer splitting up converter drives eight parallel combined DAPAs. The chip is packaged in aluminum housing with WR22 outputs. A 64QAM signal achieves 1.8% EVM with 33dBc ACPR at 45GHz. The data rate is 450Mbps and the integrated output power exceeds -10dBm.

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2013 IEEE Radio Frequency Integrated Circuits Symposium (RFIC)

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