采用0.18 μm互补金属氧化物半导体(Complementary Metal Oxide Semiconductor,CMOS)工艺,实现用于402 MHz的超再生无线接收机系统.该系统采用互补交叉耦合结构的LC振荡器作为超再生振荡器,以最小化功率消耗;采用模拟与数字结合的方式实现复合熄火波形,在提高超再生接收机接收灵敏度与频率选择性的同时,进一步降低整体功耗.后仿真结果显示,在电源电压1.5V的条件下,工作电流小于0.35 mA,系统接收灵敏度高于-90 dBm.
A Super Regenerative Receiver System with High Sensitivity and Low Power Consumption
In this paper,0.18 µm Complementary Metal Oxide Semiconductor(CMOS)technology is used to realize a superregenerative wireless receiver system for 402 MHz.LC oscillator with complementary cross-coupling structure is used as super regenerative oscillator to minimize power consumption.The combination of analog and digital is adopted to realize the composite flame out waveform,which can improve the receiver sensitivity and frequency selectivity,and further reduce the overall power consumption.The simulation results show that under the condition of 1.5V supply voltage,the operating current is less than 0.35mA,and the system receiving sensitivity is higher than-90 dBm.
super regenerative receiver(SRR)composite flameout waveformcomplementary cross-coupled oscillatorprogrammable amplifier
NETL
NSTL
万方数据
