On the basis of the frame above, design the circuit of the fake pseudo-noise code fuze with the Signal Processing System of the Cadence, including the signal sources, filters and other circuits needed. 根据上面的结构,使用Cadence的信号处理工作系统设计伪随机码引信电路,包括设计电路中信号源、滤波器以及其它模块电路;
And introduced high-speed circuit board design method and the use of Cadence software for high-speed signal integrity simulation, to measure waveforms and related data for detailed quantitative analysis. 然后介绍高速电路板的设计方法,并运用Cadence软件对高速信号进行完整性仿真,测得波形及其相关数据后进行详细的量化分析。
Distinguished from other voices, the footstep has quite an obvious repetitive trait. In this way the cadence of the signal can be used to detect human presence. Five period detection methods had been tested. But none of them had satisfying results. 脚步声具有明显地区别于其它声音的重复特性,根据这一特征,试用了五种周期检测方法,结果均不理想。
With the help of powerful Cadence software design before the high-speed signal lines for signal integrity analysis, and constraint rules formulated according to the simulation results, reducing the influence of the phenomenon of signal integrity. 本文借助功能强大的Cadence软件,在设计前对高速信号线进行信号完整性分析,然后根据仿真结果制定约束规则,减小信号完整性现象的影响程度。
In this paper, at first introduces the research background of the signal integrity, then introduces the functions and use of Cadence software. 在本文中首先介绍信号完整性的研究背景,接着介绍Cadence软件的功能及其使用。
According to the theoretical calculation model for small signal, each function module theory parameters are designed, the parameters were simulated by the spectre of cadence, and the results showed that the circuit design meets various performance indicators and work fine. 根据小信号模型进行理论计算,确定各个功能模块理论参数,应用cadence下的spectre软件进行仿真,结果表明该电路设计符合各项性能指标要求,工作稳定。
Through a large number of experiments and the Cadence circuit simulation, it verified that the signal SPD had filter discrimination. And under the impulse tests of surge current, it can effectively limit the residual voltage within the tolerance which the device can take. 通过大量的实验以及Cadence电路仿真,验证了该信号SPD具有较好的滤波功能,且在电涌电流冲击测试下能够有效地将残压限制在设备耐受的范围内。