双波段多级低噪放的匹配设计与仿真
PDF下载 (407)付东洋,文化锋*,刘太君,张 勋,李 健.双波段多级低噪放的匹配设计与仿真[J].宁波大学学报(理工版),2015,28(03):34-37.DOI:
FU Dong-yang,WEN Hua-feng *,LIU Tai-jun,ZHANG Xun,LI Jian.
Design and Simulation of a Dual-Band and Multi-stage Low Noise Amplifier
[J].Journal of Ningbo University(Natural Science & Engineering Edition),2015,28(03):34-37.DOI:| Title: | Design and Simulation of a Dual-Band and Multi-stage Low Noise Amplifier |
| 作者: | 付东洋, 文化锋*, 刘太君, 张 勋, 李 健 |
| Author(s): | FU Dong-yang, WEN Hua-feng *, LIU Tai-jun, ZHANG Xun, LI Jian |
| 关键词: | 双波段; 三级级联; 低噪声放大器; 微带传输线 |
| Keywords: | dual-band; three-level cascade; low noise amplifier; microstrip transmission line |
| 分类号: | TN913.6 |
| 文献标识码: | A |
| 摘要: | 针对双波段低噪声放大电路设计存在的多级匹配问题, 提出一种解决双波段多级低噪放匹配的方法. 首先根据每一级低噪放指标要求设置优化参数, 找到输入输出最佳阻抗值, 然后用串联微带线和并联微带枝节将双波段LNA的每一级输入输出阻抗值匹配到50Ω, 最后将其级联, 从而实现了双波段三级LNA的设计. 仿真结果表明: 该低噪声放大器在2.69GHz和3.5GHz频点处匹配良好, 噪声系数小于1dB, S11和S22都小于-20dB, 增益大于40dB, 从而能同时传输2个非同步信号, 提高了频谱利用率, 并减少了带外噪声干扰. |
| Abstract: | A matching method is proposed aiming at solving the design problems of dual-band low noise amplifier (LNA) circuit. Based on the index of each level in LNA, the matching network first sets the optimized parameters, then obtains the optimal input and output impedance. Next is to utilize microstrip transmission line in series and the parallel microstrip stubs to convert input and output impedances at each stage for dual-band LNA into 50ohms. Finally, the design of the dual-band multistage LNA is implemented by three-level cascade. The results show that, when the amplifier is operated at dual frequencies of 2.69 GHz and 2.70 GHz, the noise is less than 1 dB, S11 and S22 are less than 20 dB, gain is more than 40 dB, making two asynchronous signal transported simultaneously. In this way, not only is the spectrum efficiency improved but also the noise outside the band is reduced. |
| 参考文献 /References: | [1].潘安, 成浩, 葛俊祥. X波段低噪声放大器的设计与仿真[J]. 现代雷达, 2014, 36(1):66-70.易凯. 基于ADS的C波段低噪声放大器的设计[J]. 信息通信, 2013(7):32-33. 邓志辉. 平衡式Ku波段低噪声放大器ADS仿真[J]. 实验科学与技术, 2012, 10(1):24-26.刘波宇, 张万荣, 谢红云, 等. 双频带低噪声放大器设计[J]. 电子器件, 2011, 34(3):278-281.Chen W, Zhang S, Liu Y, et al. A concurrent dual-band uneven Doherty power amplifier with frequency- dependent input power division[J]. Circuits and Systems, 2013, 61(2):552-561. [2].Karun R, Ghannouchi F M. Design methodology for dual-band doherty power amplifier with performance enhancement using dual-band offset lines[J]. Industrial Electronics, 2012, 59(12):4831-4842. [3].Rawat K, Ghannouchi F M. Dual-band matching technique based on dual-characteristic impedance trans- formers for dual-band power amplifiers design[J]. Micro- waves, Antennas & Propagation, 2011, 5(14):1720-1729. [4].孟庆斌, 黄贵兴, 葛付伟, 等. 一种低噪放多级匹配网络的设计与仿真[J]. 微波学报, 2012, 28(3):61-65. Design and Simulation of a Dual-Band and Multi-stage Low Noise Amplifier [5].FU Dong-yang, WEN Hua-feng*, LIU Tai-jun, ZHANG Xun, LI Jian [6].( Faculty of Electrical Engineering and Computer Science, Ningbo University, Ningbo 315211, China ) [7].Abstract: A matching method is proposed aiming at solving the design problems of dual-band low noise amplifier (LNA) circuit. Based on the index of each level in LNA, the matching network first sets the optimized parameters, then obtains the optimal input and output impedance. Next is to utilize microstrip transmission line in series and the parallel microstrip stubs to convert input and output impedances at each stage for dual-band LNA into 50ohms. Finally, the design of the dual-band multistage LNA is implemented by three-level cascade. The results show that, when the amplifier is operated at dual frequencies of 2.69 GHz and 2.70 GHz, the noise is less than 1 dB, S11 and S22 are less than 20 dB, gain is more than 40 dB, making two asynchronous signal transported simultaneously. In this way, not only is the spectrum efficiency improved but also the noise outside the band is reduced. |
| 备注/Memo: | 收稿日期: 2014?08?16. 宁波大学学报（理工版）网址: http://journallg.nbu.edu.cn/ 基金项目: 国家自然科学基金（61371061）; 浙江省自然科学基金（LY12F01010）. 第一作者: 付东洋（1989－）, 女, 吉林长春人, 在读硕士研究生, 主要研究方向: 光通信. E-mail: fudongyang123456@sina.com *通信作者: 文化锋（1963－）, 男, 甘肃庆阳人, 副教授, 主要研究方向: 光通信. E-mail: wenhuafeng@nbu.edu.cn 宁波大学学报（理工版）网址：http://journallg.nbu.edu.cn/ |
