基于130nm CMOS工艺的低功耗X波段雷达收发机

Low-power-consumption X-band Radar Transceiver in 130 nm CMOS Technology

本文采用130 nm CMOS工艺设计了一个低功耗X波段收发机。发射机主要由压控振荡器(VCO)、输出缓冲器组成;接收机主要由低噪声放大器(LNA)和吉尔伯特正交混频器组成。提出的发射机采用互补交叉耦合结构VCO来降低功耗,以输出缓冲器为负载的三端口变压器通过线圈耦合实现本振、发射信号的两路功率分配和缓冲器输出阻抗匹配;接收机的LNA通过电流复用技术将有源巴伦和共源电路进行结构堆叠以共享工作电流,从而实现低功耗。后仿真结果显示,在1.2 V电压下,发射机输出峰值功率为7.1 dBm,在1 MHz频偏下相位噪声为−111.2 dBc/Hz,接收机噪声系数为6.8 dB,增益为24.8 dB,输入1 dB压缩点为−25.4 dBm,提出的收发机同时工作的功耗为100.8 mW,版图面积为1.3 mm×1.9 mm。

In this paper,a low power consumption X-band transceiver is designed in 130 nm CMOS technology.The transmitter is mainly composed of a voltage controlled oscillator(VCO)and an output buffer,while the receiver is mainly composed of a low-noise amplifier(LNA)and Gilbert quadrature mixers.To reduce power consumption,the proposed transmitter utilizes a complementary cross-coupled structure VCO.Through coil coupling,the three-port transformer with output buffer as load achieves two-way power distribution of the local oscillator,the transmit signal and the buffer output impedance matching.To achieve low power consumption,the receiver's LNA shares the operating current by structurally overlapping the active balun and the common-source circuit of the input stage.With the post simulation at 1.2 V supply voltage,the transmitter has 7.1 dBm peak output power and−111.2 dBc/Hz phase noise at 1 MHz offset.The receiver achieves 6.8 dB noise figure,24.8 dB gain,and−25.4 dBm input 1 dB compression point.The proposed transceiver has 100.8 mW power consumption in simultaneous operation and has layout area of 1.3 mm×1.9 mm.