1.2-3.6 GHz 32.67 dBm 4096-QAM Digital PA Using Reconfigurable Power Combining Transformer for Wireless Communication

被引：0

作者：

Yang, Bingzheng ^{[1
]}

Huizhen Jenny Qian ^{[1
]}

Wang, Tianyi ^{[1
]}

Luo, Xun ^{[1
]}

机构：

[1] UESTC, Ctr Integrated Circuits, Chengdu 611731, Peoples R China

来源：

2020 IEEE RADIO FREQUENCY INTEGRATED CIRCUITS SYMPOSIUM (RFIC) | 2020年

关键词：

CMOS; digital power amplifier (DPA); reconfigurable power combining transformer; watt-level; wideband; 3rd-harmonic; 4096-QAM; AMPLIFIER;

D O I：

暂无

中图分类号：

TM [电工技术]; TN [电子技术、通信技术];

学科分类号：

0808 ; 0809 ;

摘要：

This paper presents a 1.2-3.6 GHz 32.67 dBm 4096-QAM CMOS digital power amplifier (DPA) with peak power added efficiency (PAE) of 35.5%. The reconfigurable power combining transformer with controllable impedance is introduced to achieve enhanced bandwidth. Meanwhile, the L-C circuit is utilized to suppress the 3rd -harmonic and improve output power of fundamental signal. Besides, the 12-bit power digital-to-analog (power-DAC) with low LO leakage and large dynamic range is introduced to support high order modulation signals. The proposed wideband watt-level DPA is implemented in conventional 40-nm CMOS technology. It supports 50 MHz 256-QAM signal with 22.76 dBm average output power, 2.67 % EVM, -30.67 dBc ACLR, and 1 MHz 4096-QAM signal with 24.08 dBm average output power, 0.67% EVM, -50.15 dBc ACLR, which is promising candidate for wireless communication.

引用

页码：123 / 126

页数：4