广西师范大学学报（自然科学版） ›› 2017, Vol. 35 ›› Issue (2): 9-16.doi: 10.16088/j.issn.1001-6600.2017.02.002

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2.8~8.5 GHz 全集成高增益低功耗超宽带低噪声放大器设计

周述, 蒋品群*, 宋树祥   

  1. 广西师范大学电子工程学院,广西桂林541004
  • 出版日期:2017-07-25 发布日期:2018-07-25
  • 通讯作者: 蒋品群(1970—),男,广西全州人,广西师范大学副教授,博士。E-mail:pqjiang@mailbox.gxnu.edu.cn
  • 基金资助:
    国家自然科学基金(61361011)

Design of a 2.8 to 8.5 GHz High Gain, Low Powerand Fully Integration UWB LNA

ZHOU Shu, JIANG Pinqun*, SONG Shuxiang   

  1. College of Electronic Engineering, Guangxi Normal University, Guilin Guangxi 541004, China
  • Online:2017-07-25 Published:2018-07-25

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摘要： 为了在不增加功耗的前提下提高低噪声放大器的增益,本文通过引入电流复用技术,并将偏置管兼作放大管,设计出一款全集成高增益低功耗超宽带低噪声放大器。采用TSMC公司的0.18 μm CMOS 工艺和 Cadence 软件对本低噪声放大器电路进行前仿真和后仿真。仿真结果表明,在1.5 V的电压供电下,整个电路的功耗(power consumption,PD)为11.7 mW,在2.8~8.5 GHz的频段内,噪声系数(noise figure,NF)为3.05~4.1 dB,正向增益(S21)为18.2~19.9 dB,输入回波损耗(S11)、输出回波损耗(S22)均小于-10 dB,群延迟为130~320 ps,在6 GHz处,三阶交调点IIP3为-12.16 dBm,达到了设计目标。该低噪声放大器具有高增益低功耗的特点,可用于对增益和功耗要求都较高的接收机中。

关键词: 高增益, 低功耗, 超宽带, 低噪声放大器, 电流复用

Abstract: In order to improve the gain of low noise amplifier without increasing power consumption, this paper presents a fully integrated high gain low power UWB low noise amplifier by introducing current reuse technology and putting the bias tube as amplifier tube. The TSMC 0.18 μm CMOS technology and Cadence software are used to carry out the pre-simulation and post-simulation of the low noise amplifier circuit. The simulation result shows that the forward gain(S21)is from 18.2 dB to 19.9 dB over the 2.8~8.5 GHz operating band, the value of noise figure(NF) ranges from 3.05 dB to 4.1 dB, the input return loss (S11) and the output return loss (S22) both are below -10 dB, the group delay ranges from 130 ps to 320 ps and the IIP3 is -12.16 dBm at 6 GHz. With a 1.5 V voltage supply, the LNA has an overall power consumption(PD)of 11.7 mW, the design target has achieved. This low noise amplifier has the characteristics of high gain and low power consumption, which can be used in receivers with higher requirements for gain and power.

Key words: high gain, low power, ultra-wide-band, LNA, current reuse

中图分类号: 

  • TN722.3
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