基于通用集成运算放大器，利用MASON公式设计了一个多功能二阶通用滤波器，能同时或分别实现低通、高通和带通滤波，也能设计成一个正交振荡器。电路的极点频率和品质因数能够独立、精确地调节。电路使用4个集成运放、2个电容和11个电阻，所有集成运放的反相端虚地。利用计算机仿真电路的通用滤波功能、极点频率和品质因数的独立控制和正交正弦振荡，从而证明该滤波器正确有效。 Abstract: A new multifunctional second-order filter based on OPs was presented by MASON formula. Functions， such as high-pass， band-pass， low-pass filtering， can be realized respectively and simultaneously， and can become a quadrature oscillator by modifying resistance ratio. Its pole angular frequency and quality factor can be tuned accurately and independently. The circuit presented contains four OPs， two capacitors， and eleven resistances， and inverting input of all OPs is virtual ground. Its general filtering， the independent control of pole frequency and quality factor and quadrature sinusoidal oscillation were simulated by computer， and the result shows that the presented circuit is valid and effective.
上传时间： 2013-10-09
上传用户：13788529953
*** *** *** *** *** *** *** *** *** *** *** *** *** *** *** *** *** *** ** RELEASE NOTES *** *** *** *** ***** *** *** *** *** *** *** *** *** *** *** *** *** *** 1) RELEASE NOTES: --- --- ---- The release notes are now provided in PDF format in the file: \SOFTWARE\uCOS-II\DOC\RelV251.PDF 2) FEATURES SINCE V2.00: --- --- --- ----- All the features added since V2.00 are described in the PDF file: \SOFTWARE\uCOS-II\DOC\NewV251.PDF 3) EVENT FLAGS: -------------- Event Flags are discussed in AN-1007 (see www.Micrium.com/app_notes.htm) 4) QUICK REFERENCE CHART: ------------------------ A Quick Reference Chart for all the functions in V2.51 is provided in the following .PDF files: \SOFTWARE\uCOS-II\DOC\QuickRefChartV251-Color.PDF Once printed, simply FOLD the page in half and if you have a LAMINATION machine, you can protect the chart by laminating it.
上传时间： 2015-04-06
上传用户：zq70996813
这是最难的一个程序了，算法是运筹学里的branch band的集装箱问题的最优动态规划解法，当年我的头都大了才实现的，绝得数学加实践的程序
标签： 程序
上传时间： 2015-04-22
上传用户：731140412
ALTERA NIOS处理器实验，QUARTUS下用VHDL编译成处理器，自动band跟踪小程序
上传时间： 2015-04-24
上传用户：ayfeixiao
computes the eigenvalues of a symmetric tridiagonal * matrix T. The user may ask for all eigenvalues, all eigenvalues in the half-open interval (VL, VU], or the IL-th through IU-th eigenvalues.
标签： T. eigenvalues tridiagonal eigenvalue
上传时间： 2014-01-21
上传用户：CSUSheep
This m-file simulates MPSK (theoretical and simulated) with Gray coding This m-file simulates MPSK (BPSK,QPSK,8PSK)with theoretical and simulated results using Gray coding. Numerical examples of a satellite link design are shown using QPSK and/or 8PSK when the bit rate(Rb)is greater than the channel bandwidth Wc (Band-limited channel).
标签： simulates m-file This MPSK
上传时间： 2014-01-11
上传用户：372825274
In this paper, we provide an overview of the security concerns introduced by wireless LANs, current approaches to wireless LAN security, their limitations, and the weaknesses of various “band aid” security solutions. We conclude by describing how the ReefEdge Connect System provides a comprehensive solution to wireless LAN security.
标签： introduced overview concerns security
上传时间： 2015-11-02
上传用户：凌云御清风
Multivac 的Level set包，包括 narrow band level set方法和fast marching方法的全部源代码。
上传时间： 2015-12-02
上传用户：teddysha
The Rayleigh Integral Method is useful in computing the acoustic properties of a flat panel radiating into a half space.
标签： properties computing Rayleigh Integral
上传时间： 2015-12-07
上传用户：youmo81
Linux内核进程管理 1、linux进程管理的模块组织框架 2、相关数据结构。 3、进程调度原则，调度算法,。 4、进程的创建和运行管理。 5、进程间通讯。 6、更多的技术 进程调度和中断处理交接 进程管理涉及的内核机制：bottom-half处理，等待队列 Linux/SMP的进程管理和调度技术 7、概述2.4的新特点
上传时间： 2013-12-29
上传用户：ZJX5201314
