A 4-Way Doherty Digital Transmitter Featuring 50%-LO Signed IQ Interleave Upconversion with more than 27dBm Peak Power and 40% Drain Efficiency at 10dB Power BackOff Operating in the 5GHz Band

📋 论文概要

该论文提出了一种4路Doherty数字发射机，采用50%占空比LO的符号IQ交织上变频技术，实现了超过27dBm的峰值功率。解决了数字发射机在宽带应用中效率和功率提升的问题。

💡 主要创新点

• 采用4路Doherty结构实现高效率功率合成，提升发射机整体效率。
• 提出50%占空比LO的符号IQ交织上变频技术，简化上变频电路并提高信号质量。

🏷 关键词

📄 原文摘要

Mohsen Hashemi1,4, Dieuwert Mul1, Leo C.N. de Vreede1, Morteza S. Alavi1 Delft University of Technology, Delft, The Netherlands now with imec-Netherlands, Eindhoven, The Netherlands 3 now with Broadcom-Netherlands, Bunnik, The Netherlands 4 now with ItoM, Eindhoven, The Netherlands 1 2 Recently, digital transmitters (DTXs) that feature arrays of controlled digital PA (DPA) cells have become increasingly popular since they directly benefit from nanoscale CMOS technology, yielding reduced die area and highly efficient operation [1-6]. For wideband applications, I/Q DTXs are considered superior over their polar counterparts due to their linear I/Q operation, which avoids bandwidth expansion. Nevertheless, I/Q DTXs can suffer from the interaction between their I and Q paths, especially at higher power levels, giving rise to an I/Q image and nonlinearity. To tackle this issue, an IQ interleaved

👥 作者与机构

Mohammadreza Beikmirza1, Yiyu Shen1,2, Mohammadreza Mehrpoo1,3,