An Inductorless and Capacitorless LNA with Noise and Distortion Cancelation

摘要：

In this paper, a broadband CMOS differential LNA for DC~2 GHz software defined radio is proposed. The channel thermal noise and the flicker noise of input MOSFET is canceled by exploiting a noise-canceling technique. A lower noise figure and an excellent wide-band input matching can be achieved at the same time. Moreover, the distortions introduced by input MOSFET can be partly cancelled using the proposed technique. The input matching stage and the noisecanceling stage are coupled by a diode. The circuit is fabricated in a 0.18 |im CMOS process. The measurement results show that in DC~2 GHz, S,, is lower than -11 dB, the gain is between 8-12 dB, the minimum NF is 3.0 dB, and the OIPj is >10.4 dBm. It consumes 10 mA under a 1.8V supply. This chip occupies 310 urn x 110 um core area without any inductors and capacitors.

关键词： broadband low noise amplifier (LNA) noise-cancelling Inductorless capacitorless

作者: Keping Wang Kiat Seng Yeo Kaixue Ma Zhigong Wang

作者单位: Division of Circuits & Systems,EEE Nanyang Technological University Singapore Institute of RF- & OE- Division of Circuits & Systems,EEE Nanyang Technological University Singapore Institute of RF- & OE-ICs Southeast University Nanjing,China

会议类型: 国际会议

会议名称: 2011 3rd IEEE International Conference on Computer Research and Development(ICCRD 2011)(2011第三届计算机研究与发展国际会议)

会议地点: 上海

会议语种:英文

页码: 270-274

在线出版日期: 2011-03-11（万方平台首次上网日期，不代表论文的发表时间）