A Group Delay Compensation Power Amplifier with Auto Power Level Control for 24GHz FMCW Automobile Radar Application

被引：0
|
作者：
Chen, Dong [1 ]
Peng, Yu [1 ]
Wu, Tianjun [1 ]
Liu, Ying [1 ]
Liu, Huihua [1 ]
Zhao, Chenxi [1 ]
Wu, Yunqiu [1 ]
Kang, Kai [1 ]
机构：
[1] Univ Elect Sci & Technol China, Chengdu, Sichuan, Peoples R China
来源：
2018 IEEE/MTT-S INTERNATIONAL MICROWAVE SYMPOSIUM - IMS | 2018年
基金：
中国国家自然科学基金;
关键词：
group delay; power amplifiers; CMOS; automobile radar; auto level control;
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 group-delay compensation power amplifier (PA) is proposed in this paper. Equalizer based on the all-pass filter is used to reduce the chirp signal linearity distortion caused by the nonlinear group delay of the PA. The group delay variation of the whole PA is less than +/- 5ps. An auto power-level control loop is adopted to stabilize the output power against the temperature and process variation. The control loop is based on the power detector and charge pump. The different output power level can be set using the loop directly to satisfy the needs of different detection distance. The power gain of the PA is 21.5 dB and the maximum output power is 14.5 dBm. The 2f0 impedance is controlled to improve the power added efficiency (PAE). The maximum PAE reaches 33.5%. The size of the whole chip is 0.8x0.9 mm(2)
引用
收藏
页码：457 / 460
页数：4
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