期刊论文

Automatic Gain Controll Integrated Quartz Oscillator With Low Power

Zeng, C.

中文

压电与声光

1004-2474

2018

40

6

905-909

10.11977/j.issn.1004-2474.2018.06.024

国家自然科学基金资助项目（61404011）； 湖南省自然科学基金资助项目（2015JJ3001）； 湖南省教育厅资助科研基金资助项目（17B007）；

本校为第一且通讯机构

通过分析三点式振荡器的结构原理,选取桑托斯(Santos)结构,利用非对称差分对的电流分配特性实现幅度控制,以降低功耗.采用反相器链整形满摆幅输出,设计了一种适用于无线接收芯片的12 MHz自动增益控制晶体振荡器.基于和舰(HJ)射频(RF)0.18 μm CMOS工艺,完成电路设计、版图设计与仿真,流片并测试.结果表明,该晶体振荡器的总电流为120 μA,相位噪声为-121 dBc/@1 kHz,-165.1 dBc/@1 MHz,满足无线接收芯片的性能指标.

A kind of 12 MHz automatic gain control crystal oscillatorsuitablefor wireless receiver chip was designed based on the Santos structure by analyzing the principle of three-point oscillator structure. In this oscillator circuit, the amplitude control was achieved by using the asymmetric difference pair current distribution characteristic to reduce the power consumption,and the inverter chain was adopted to shape the full-swing output. Based on the HJ RF 0.18 μm CMOS process,the circuit design and layout design as well as the simulation were acc...