A Dual-Band LNA with Active Balun for GNSS Receivers

摘要：

This paper presents the design and implementation of a dual-band reconfigurable low noise amplifier (LNA) for multi-band GNSS receivers. The proposed LNA incorporates an active balanced-to-unbalanced (balun) conversion and a step gain control. The LNA also utilizes a constant gm biasing to maintain a constant LNA gain over process, voltage, temperature (PVT) variations. The operating frequency of the LNA can be configured at either 1.2GHz or 1.57GHz by off-chip matching network. The LNA is designed in a 0.18-μm CMOS process, occupying a die area of 0.65×0.55mm2, including ESD, power clamp and bonding pads. Post-simulation results show that the proposed dual-band LNA achieves a voltage gain of 25dB and 22dB, a noise figure (NF) of 2.1dB and 2.3dB, at 1.2GHz and 1.57GHz respectively. The LNA draws 3.5mA current from a 1.8V supply.

作者: Jun Wu Peichen Jiang Dongpo Chen Jianjun Zhou

作者单位: Center for Analog/RF Integrated Circuits (CARFIC), School of Microelectronics Shanghai Jiao Tong University, Shanghai 200240, China

会议类型: 国际会议

会议名称: 2010 10th IEEE International Conference on Solid-State and Integrated Circuit Technology(第十届固态和集成电路技术国际会议 ICSICT-2010)

会议地点: 上海

会议语种:英文

页码: 665-667

在线出版日期: 2010-11-01（万方平台首次上网日期，不代表论文的发表时间）