CAJ | 학술논문

设计了一个可用于低中频GPS接收机系统的1.575 GHz的低噪声放大器.首先考虑了ESD保护二极管和焊盘的寄生效应,对输入匹配和噪声性能的优化做了分析,并将窄带电感模型用于电路设计优化.其次基于Vol-terra级数,对放大器的非线性做了分析,推导了电路各参数与,IIp3的关系表达式,据此在功耗和线性度之间做了折衷考虑.采用TSMC 0.18μm射频工艺对低噪声放大器进行设计和仿真.仿真结果表明:在1.8 V工作电压下,噪声系数仅为1.1 dB,IIP3为-8.3 dBm,电流消耗3 mA,电路的输入匹配良好.
설계료일개가용우저중빈GPS접수궤계통적1.575 GHz적저조성방대기.수선고필료ESD보호이겁관화한반적기생효응,대수입필배화조성성능적우화주료분석,병장착대전감모형용우전로설계우화.기차기우Vol-terra급수,대방대기적비선성주료분석,추도료전로각삼수여,IIp3적관계표체식,거차재공모화선성도지간주료절충고필.채용TSMC 0.18μm사빈공예대저조성방대기진행설계화방진.방진결과표명:재1.8 V공작전압하,조성계수부위1.1 dB,IIP3위-8.3 dBm,전류소모3 mA,전로적수입필배량호.
A 1.575 GHz CMOS (complementary metal-oxide-semiconductor transistor)low noise amplifier(LNA)suitable for a low intermediate frequency(IF)global positioning system(GPS)receiver is presented.Considering parasitic effects resulting from bond pad and input electrostatic discharge(ESD)protection diodes,the optimization of the input matching and noise performance is analyzed.and a narrowband inductor model is applied to the circuit design and optimization.Based on the Voiterra series,the nonlinearity of the LNA iS analyzed and an equation describing input-referred third-order intercept points (IIp3)which indicate the nonlinearity effects ig derived;accordingly,the trade-Off between the powet consumption and linearity is made.The LNA is designed and simulated with TSMC (TaiWan Semiconductor Manufacturing Company)0.18 μmradio frequency(RF)technology.Simulation results show that the LNA has a noise figure of only 1.1 dB,-8.3 dBm IIp3 vith 3mA current consumption from a 1.8 V voltage supply,and the input impedances match well.