Design of a Variable Gain LNA Applied in CMMB

CHEN Zheng; DUAN Ji-hai; HUANG Sheng

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Design of a Variable Gain LNA Applied in CMMB

更新时间：2026-09-04

- Design of a Variable Gain LNA Applied in CMMB
- Vol. 30, Issue 12, Pages: 160-163(2013)
- 作者机构：
  
  桂林电子科技大学机构信息与通信学院,广西,桂林,541004
- 作者简介：
- 基金信息：
- DOI：
  CLC：
- Published：2013
- 稿件说明：
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陈郑, 段吉海, 黄胜. 一种用于CMMB的可变增益LNA的设计[J]. 微电子学与计算机, 2013, 30(12): 160-163.

CHEN Zheng, DUAN Ji-hai, HUANG Sheng. Design of a Variable Gain LNA Applied in CMMB[J]. 2013, 30(12): 160-163.
陈郑, 段吉海, 黄胜. 一种用于CMMB的可变增益LNA的设计[J]. 微电子学与计算机, 2013, 30(12): 160-163. DOI：

CHEN Zheng, DUAN Ji-hai, HUANG Sheng. Design of a Variable Gain LNA Applied in CMMB[J]. 2013, 30(12): 160-163. DOI：

摘要

采用0.13μm CMOS工艺设计了一种应用于CMMB的可变增益的低噪声放大器（low noise amplifier， LNA）.LNA工作于2.635~2.66 GHz，采用低增益和高增益两种控制模式，其中高增益为主要工作模式.设计使用cadence软件进行前仿真和后仿真，随后对其进行了流片和封装测试.测试结果显示，在高增益时，S为9.25~9.42 dB，NF为1.99~2.26 dB，IIP3为1.25 dB.使用1.2 V电源供电，直流功耗为7.38 mW.低增益时 S为-5.85 dB到-5.70 dB，N F为7.90 dB到8.99 dB，IIP3为14.19 dB.

Abstract

A variable gain low noise amplifier (LNA) has been implemented in 0.13μm CMOS technology to support CMMB standards.This LNA works from 2.635 GHz to 2.66 GHz

and is divided into low gain mode and high gain mode which is mainly used.With the help of cadence software

pre-simulation and post-simulation was done.And then the chip was taped out and packaged before being measured.Chip measurement shows that

in the mainly used high gain

S is from 9.25 to 9.42 dB

NF is from 1.99 to 2.26 dB

IIP3 is 1.25 dB.Power dissipation is 7.38 mW with while the power supply is 1.2 V.In the low gain

S is from-5.85 dB to-5.70 dB

NF is from 7.90 dB to 8.99 dB

IIP3 is 14.19.

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