用于医疗探测超低功耗417MHz OOK RF收发机芯片

Ultra-Low Power Dissipation 417 MHz OOK RF Transceiver for Medical Endoscope Applications

介绍了一种应用于医疗探测的工作在417 MHz频段的二进制开关键控调制(OOK)射频收发机芯片。基于平方求和的模拟解调方法,该射频收发机采用了低中频的系统架构,减低了振荡器的精度要求从而节省了功耗。该收发机的射频前端采用了一种新型的电流复用技术,并且通过电感复用方案节省了片外元件。该射频收发机在0.18μm标准CMOS工艺下进行了流片,芯片面积3.18 mm2。测试结果表明,该接收机的能量效率为1.71 nJ/bit,误码率为10-3情况下的灵敏度为-80.2 dBm,该发射机的能量效率为1.53 nJ/bit,输出功耗为-2.17 dBm,是一款超低功耗、高集成度和高灵敏度的射频收发机芯片。

A 417 MHz on-off keying （OOK） RF transceiver for medical endoscope applications was presented. Based on an analog quadratic-sum demodulation scheme, the low-IF architecture was applied for this transceiver, which reduced the oscillator accuracy and power consumption. A new current-reuse structure and an inductorreuse technique for the RF front-end were introduced to save the off-chip components. The transceiver was implemented in standard 0. 18 μm CMOS process with 3.18 mm2 chip area. The test results demonstrate that the receiver achieves the energy efficiency of 1.71 nJ/bit with sensitivity of - 80. 2 dBm when the bit error rate is 10 -3, and the transmitter achieves the energy efficiency of 1.53 nJ/bit with output power of -2. 17 dBm. This is an ultra-low power, high-integrated RF transceiver with high sensitivity.