太赫兹科学与电子信息学报
太赫玆科學與電子信息學報
태혁자과학여전자신식학보
Information and Electronic Engineering
2014年
2期
238-241,265
,共5页
超宽带%低噪声放大器%二阶切比雪夫滤波器%带外抑制电容
超寬帶%低譟聲放大器%二階切比雪伕濾波器%帶外抑製電容
초관대%저조성방대기%이계절비설부려파기%대외억제전용
Ultra-Wideband%Low Noise Amplifier%second-order Chebyshev filter%out-band suppression capacitor
采用 TSMC公司的0.18μm CMOS工艺,设计了一款具有带外抑制功能的超宽带低噪声放大器(UWB LNA),电路基于窄带 PCSNIM LNA拓扑结构,并利用二阶切比雪夫滤波器和带外抑制电容代替传统输入匹配网络。电路由1.8 V直流电源供电,功耗约为11.5 mW。仿真结果表明,在3 GHz~5 GHz 的超宽带频段内,平均正向增益约为13.9 dB,输入、输出回波损耗 S11和 S22分别小于-13 dB和-15 dB,最小噪声系数仅为0.997 dB,三阶交调点 IIP3均值为5.40 dB。此外,反向隔离度S12和稳定性 StabFact1等性能指标也取得了不错的仿真效果。
採用 TSMC公司的0.18μm CMOS工藝,設計瞭一款具有帶外抑製功能的超寬帶低譟聲放大器(UWB LNA),電路基于窄帶 PCSNIM LNA拓撲結構,併利用二階切比雪伕濾波器和帶外抑製電容代替傳統輸入匹配網絡。電路由1.8 V直流電源供電,功耗約為11.5 mW。倣真結果錶明,在3 GHz~5 GHz 的超寬帶頻段內,平均正嚮增益約為13.9 dB,輸入、輸齣迴波損耗 S11和 S22分彆小于-13 dB和-15 dB,最小譟聲繫數僅為0.997 dB,三階交調點 IIP3均值為5.40 dB。此外,反嚮隔離度S12和穩定性 StabFact1等性能指標也取得瞭不錯的倣真效果。
채용 TSMC공사적0.18μm CMOS공예,설계료일관구유대외억제공능적초관대저조성방대기(UWB LNA),전로기우착대 PCSNIM LNA탁복결구,병이용이계절비설부려파기화대외억제전용대체전통수입필배망락。전로유1.8 V직류전원공전,공모약위11.5 mW。방진결과표명,재3 GHz~5 GHz 적초관대빈단내,평균정향증익약위13.9 dB,수입、수출회파손모 S11화 S22분별소우-13 dB화-15 dB,최소조성계수부위0.997 dB,삼계교조점 IIP3균치위5.40 dB。차외,반향격리도S12화은정성 StabFact1등성능지표야취득료불착적방진효과。
A Ultra-Wideband Low Noise Amplifier(UWB LNA) with out-band suppression function is designed by using the TSMC 0.18μm CMOS process. The circuit is based on narrow-band PCSNIM LNA topology, and a second-order Chebyshev filter and out-band suppression capacitor are used to replace the traditional input matching network. The consumption of LNA is about 11.5 mW at 1.8 V DC power supply. In the 3 GHz-5 GHz UWB frequency band, the simulation results are showed in the forward gain about 13.9 dB, the input reflection coefficient S11, output reflection coefficient S22 are below-13 dB and-15 dB, respectively;the minimum noise figure only 0.997 dB;the third-order intercept point IIP3 averages at 5.40 dB. In addition, some other satisfactory results are obtained in the reverse isolation S12 and the stability StabFact1 etc.