电子器件Issue(4)：635-639,5.DOI:10.3969/j.issn.1005-9490.2014.04.012
低Q值匹配网络超宽带低噪声放大器设计
Design of Ultra Wideband Low Noise Amplifier Based on Low Q Value of Matching Network
摘要
Abstract
A novel LNA ( Low Noise Amplifier ) is proposed by using low Q value of matching network. The LC filtering circuit is merged in biasing circuit in order to reduce the noise of system and to monitor the Q value of the matching network in the design;By choosing the suitable feedback loop to raise the bandwidth of the LNA and to adjust the Q value of the matching network;By taking advantage of the structure of matching circuit and the optimization of the Q value,a few problems of Amplifier is settled down,such as the narrow bandwidth,the high noise and the low gain. The LNA is measured under the bandwidth of 1. 5 GHz ~2. 5 GHz, the ripple wave characteristic is lower than 1 dB,moreover the gain is 25 dB. The measured result is compared with the simulation result,it can be verified the design is reasonable. And the structure of the design method is simple and the performance is more superior,meanwhile the application is wide.关键词
低噪声放大器/匹配网络/低Q值/超宽带Key words
LNA/matching network/low Q value/ultra wideband分类
信息技术与安全科学引用本文复制引用
杜海明,仲继生,赵红梅,崔光照..低Q值匹配网络超宽带低噪声放大器设计[J].电子器件,2014,(4):635-639,5.基金项目
河南省科技厅基础前沿研究项目(112300410144) （112300410144）
郑州市UWB实时定位系统院士工作站建设项目(131PYSGZ211) （131PYSGZ211）
河南省省院合作项目(122106000049) （122106000049）
