A 3-7GHz 4-Element Digital Modulated Polar Phased-Array Transmitter with 0.35° Phase Resolution and 38.2% Peak System Efficiency

被引：0
|
作者：
Qian, Huizhen Jenny [1 ,2 ]
Liang, Jian Orion [2 ]
Zhu, Nianyong [2 ]
Gao, Peng [2 ]
Luo, Xun [1 ,2 ]
机构：
[1] UESTC, Ctr Integrated Circuits, Chengdu, Sichuan, Peoples R China
[2] Huawei Technol Co Ltd, Shenzhen, Peoples R China
来源：
2017 IEEE CUSTOM INTEGRATED CIRCUITS CONFERENCE (CICC) | 2017年
关键词：
Compensated Marchand balun; digital phase shifter; phased-array; phase modulation (PM) phase-shifting; polar transmitter; wideband; CMOS;
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：
A 3-7GHz 4-element digital modulated polar phased-array transmitter (TX) in 40nm CMOS with 0.35 degrees phase resolution and 38.2% peak system efficiency is presented in this paper. Phase-shifting in phase modulation path is utilized in each element to improve amplitude error. The RMS phase error of 0.3 degrees is achieved with current-DAC based 10-bit phase shifter after digital pre-distortion. Efficiency for both saturated and back-off power is enhanced by polar digital power amplifier and feed-forward controlled dynamic matching network.
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页数：4
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