A 2ghz cmos lna is designed as an example . simulation results show that the noise and gain performance is improved evidently after the introduction of the series on - chip inductor 最后用一个2ghzcmos低噪声放大器的设计实例进行验证,仿真结果表明在共源共栅结构之间引入匹配集成电感后,放大器的噪声和增益性能得到了明显改善。
During this precess , using the technology of optimizing the widths of both common source mosfet and common gate mosfet under a fixed power , we obtained a compromised result of power consumption and noise figure 设计过程中,在限定功耗的前提下,主要针对共源晶体管和共栅晶体管的栅宽,对电路的性能进行了优化,使得设计的lna的噪声系数最小。
2 . the input stages of the ccii and the operational amplifier in transimpedance implifier are realized with folded cascode amplifier to reach high cmrr , large open loop gain and low offset 2 .为了提高仪表放大器的电源抑制比,并得到大的开环增益,相对低的失调等性能,电流传输器的输入级和跨阻放大器中运算放大器输入级均采用折叠共源共栅放大器。
According to the analysis of the whole communication system , we verified the feasibility of the design goal put forward previously and used a topology of cascode with source degeneration to design a differential lna 通过对卫星通信系统的链路分析,根据实际系统需要,确定了低噪放模块的设计指标。采用常用的共源共栅拓扑结构,设计了一个差分结构的lna 。
The lna with source inductor degeneration is analyzed in detail , which is used most widely in current . base on the analysis , a cascode structure is presented to minimize the effect of gate - drain capacitance cgd 针对目前lna中应用最广泛的源极电感负反馈结构,进行了详细分析,在此基础上对该结构做出了优化,采用共源共栅级联结构,减小了栅漏电容cgd的影响。
共: common; joint; mutual; gener ...栅: railings; paling; palisade; ...共栅极: common gate; common grid共源共栅级: cascode stage共栅放大器: cathode-input amplifer共栅极电路: common grid circuit共栅联接: common gate connection; common-gate connection共阴共栅放大器: cascode amplifier共阴共栅前置放大器: cascode preamplifier共栅极场效应晶体管电路: common gate fet circuit共闸组态: common gate configuration共闸极放大器: common-gate amplifier共增溶解温度: cosolute temperature共增溶解: cosolubilization共载频: common carrier frequency