一种用于射频前端的谐波整形低功耗N通道滤波器
A Harmonic Shaping Low Power-consumption N-path Filter for RF Front End
宋堃阳 1蒋品群 1宋树祥 1蔡超波 1岑明灿1
作者信息
- 1. 广西类脑计算与智能芯片重点实验室,广西桂林 541004;广西高校集成电路与微系统重点实验室,广西桂林 541004;广西师范大学 电子与信息工程学院/集成电路学院,广西桂林 541004
- 折叠
摘要
针对传统射频前端N通道滤波器功耗高,不能根据应用要求选择通过或抑制信号的高次谐波等问题,设计了一款谐波整形低功耗N通道滤波器.该滤波器通过添加具有适当权重的额外路径,可实现谐波抑制和整形的功能.同时,将本振Local Oscillator(LO)信号的n次谐波信号作为时钟信号,降低LO信号频率,时钟信号发生器的动态功耗降低到原来的1/n.SMIC 180 nm CMOS工艺的后仿真结果表明,10通道带通滤波器的中心频率在0.1～6.0 GHz可调,增益为0～5 dB,噪声系数小于 4.6 dB,功耗为 3.5～6.0 mW,输入三阶交调点(Input 3rd-order Intermodulation Point,IIP3)大于 10 dBm,3次和5次谐波抑制分别大于65、90 dB,表明该滤波器具有谐波抑制和谐波整形的功能,且具有较低的功耗.
Abstract
To solve the problems of high power-consumption and unable to select or reject higher harmonics of signal based on the application requirements in traditional RF front-end N-path filter,a harmonic shaping,low power-consumption N-path filter is designed.The filter effectively shapes harmonics by adding extra paths with proper weighting.At the same time,by using the nth harmonic of Local Oscillator(LO)signal instead of the clock signal to reduce the frequency of the LO signal,the dynamic power consumption of the clock signal generator is reduced by a factor of n.The simulation results in SMIC 180 nm CMOS technology show that the band-pass filter has a center frequency adjustment from 0.1～6.0 GHz,a gain ranging from 0～5 dB,a noise figure lower than 4.6 dB,power consumption ranging from 3.5～6.0 mW,an Input 3rd-order Intermodulation Point(IIP3)greater than 10 dBm,and rejection for the 3th and 5th harmonics greater than 65,90 dB respectively,when N=10.It indicates that the filter has the functionality of harmonic rejection and shaping,along with low power-consumption.
关键词
N通道滤波器/带通滤波器/谐波整形/谐波抑制/低功耗Key words
N-path filter/band-pass filter/harmonic shaping/harmonic rejection/low power-consumption引用本文复制引用
基金项目
国家自然科学基金(62061005)
广西自然科学基金项目-青年科学基金项目(2022GXNSFBA035646)
广西科技重大专项(AA23023010)
广西创新驱动发展专项(AA19254001)
出版年
2024
国家科技期刊平台
NSTL
万方数据