传感技术学报Issue(10)：1326-1331,6.DOI:10.3969/j.issn.1004-1699.2014.10.005
一种智能传感器射频前端的低功耗设计与实现
Design and Implementation of Low Power RF Front End Applied in Intelligent Sensor
田晓明 1白春风 1吴建辉1
作者信息
- 1. 东南大学国家专用集成电路系统工程技术研究中心，南京210096
- 折叠
摘要
Abstract
A low power RF front end,which includes low noise amplifier( LNA) and down mixer,is employed in an intelligent sensor. The wireless communications of intelligent sensors are based on Zigbee protocol,and a Zigbee re￣ceiver generally uses low IF architechture to obtain a good trade￣off between high sensivity and low power. Proposed LNA adopts a common gate(CG)noise cancelation structure and employs‘gm boost’technique to achieve a low noise figure( NF) for a low power consumption and a simplified impedance matching net. Passive architechture is employed in the design of down mixer with both the input transconductance stage and the output transimpedance stage reducing power consumption by employing‘gm boost’ technique. Besides,passive mixing switch consumes no quiescent current,which also contribute to the low power design. The design is implemented in TSMC 0. 13 μm CMOS RF technology with the circuit consuming 0.12 mm2 active area and 5.4 mW power at the supply of 1.2 V. Simulation results reveal that LNA achieves a performance of 2.1 dB NF and S11 below -30 dB,as well as the mixer obtains 27.7 dB conversion gain. What’s more,5.4 dB NF and 5.5 dBm IIP3 is measured in the test of RF front end,which is competent for intelligent sensor applications.关键词
智能传感器/低功耗射频前端/噪声抵消/跨导增强/无源混频器Key words
intelligent sensor/low power RF front end/noise cancellation/gm boost/passive mixer分类
信息技术与安全科学引用本文复制引用
田晓明,白春风,吴建辉..一种智能传感器射频前端的低功耗设计与实现[J].传感技术学报,2014,(10):1326-1331,6.
