This work presents a dual-band polar digital transmitter (P-DTX) based on a digitally controlled two-point edge interpolation digital-to-time converter, which is capable of supporting Wi-Fi 6 applications. The proposed P-DTX is fabricated in a standard 28-nm CMOS process. The 2.5/5GHz digital power amplifiers (DPAs) reach a maximum power ( $P_{\mathrm {MAX}}$ )/power efficiency (PE) of 27 dBm/53% and 27dBm/37%, respectively. The transmitter meets an error vector magnitude (EVM)/DPA PE/total TX power dissipation of −30.5 dB/33%/532 mW for the low band and −29 dB/26%/718 mW for the high band at 6-dB backoff (dBBO) from $P_{MAX}$ . An EVM as low as −40 dB is achieved using digital pre-distortion at 7–8 dBBO, for 20–160-MHz signal bandwidths, thus demonstrating MCS11 1024-QAM OFDM Wi-Fi 6 operation.

中文翻译：

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完全集成的 27dBm 双频段全数字极化发射器，支持 160MHz，适用于 Wi-Fi 6 应用

这项工作提出了一种基于数控两点边缘插值数字时间转换器的双频极性数字发射机 (P-DTX)，能够支持 Wi-Fi 6 应用。建议的 P-DTX 采用标准 28-nm CMOS 工艺制造。2.5/5GHz 数字功率放大器 (DPA) 达到最大功率 ( $P_{\mathrm {MAX}}$ )/功率效率 (PE) 分别为 27 dBm/53% 和 27dBm/37%。发射器在低频段满足 -30.5 dB/33%/532 mW 和高频段 -29 dB/26%/718 mW（6-dB）的误差矢量幅度 (EVM)/DPA PE/总 TX 功耗回退 (dBBO) 从 $P_{MAX}$ . 对于 20–160 MHz 信号带宽，使用 7–8 dBBO 的数字预失真实现了低至 -40 dB 的 EVM，从而展示了 MCS11 1024-QAM OFDM Wi-Fi 6 操作。