his research aims at creating broadband tunable, fully integrated filters for the application of cognitive radio and signal classification receivers. The approach under study is the N-path filter technique which is capable of translating a baseband impedance to a reference frequency creating a tunable filter. The traditional N-path filter suffers from fundamental architectural limitations, namely : a trade-off between insertion loss and out-of-band rejection, reference clock feed- through, and jammer power handling limitations. In the first approach, the fundamental trade- off of the traditional N-path filter between insertion loss and out-of-band rejection is improved by a transmission line (T-line) N-path filter technique.
上传时间： 2020-05-31
上传用户：shancjb
Since the original publication of Manual 74 in 1991, and the preceding “Guidelines for Transmission Line Structural Loading” in 1984, the understanding of structural loadings on transmission line structures has broadened signifi cantly. However, improvements in computational capa- bility have enabled the transmission line engineer to more easily deter- mine structural loadings without properly understanding the parameters that affect these loads. Many seasoned professionals have expressed concern for the apparent lack of recent information on the topic of struc- tural loadings as new engineers enter this industry. The Committee on Electrical Transmission Structures is charged with the responsibility to report, evaluate, and provide loading requirements of transmission struc- tures. This task committee was therefore formed to update and revise the 1991 manual.
标签： Transmission Guidelines Electrical Line for
上传时间： 2020-06-07
上传用户：shancjb
It has been over a decade since the Chinese publication of Line Loss in Electric Power Systems. To keep pace with technological developments, I started a revision as early as 2002, following the main principles that the theoretical framework and characteristics of the first edition should be retained, with new contents added according to new problems after the reform of electric power systems and the new requirements for line loss management practices and in combination with practical experience.
上传时间： 2020-06-07
上传用户：shancjb
delphi做的系统强制重启程序。 服务器死机怎么办？用该软件重启。 1.病毒感染:一般表现,起初能够正常运行,某天突然运行速度变慢,工作效率急剧下降,出现频繁的死机。这时首先进行全面查毒、杀毒,以确定机器是否已经感染了病毒。 2.有些软件编程不规范,不能排在第一加载和运行,而要放在最后运行,否则会引起系统管理的混乱。测试版软件在某方面不够稳定,使用后可能会导致系统无法启动,所以最好少用。 3.在内存较小的情况下,运行占用内存较大的应用程序,容易出现死机。建议在运行程序时应及时重启系统。
标签： delphi
上传时间： 2021-07-27
上传用户：风云
The PW2601 is a charger front-end integrated circuit designed to provide protection to Li-ionbatteries from failures of charging circuitry. The device monitors the input voltage, battery voltageand the charging current to make sure all three parameters are operated in normal range. Thedevice will switch off internal MOSFET to disconnect IN to OUT to protect load when any of inputvoltage, output current exceeds the threshold. The Over temperature protection (OTP) functionmonitors chip temperature to protect the device. The PW2601 also can protect the system’sbattery from being over charged by monitors the battery voltage continuously. The deviceoperates like a linear regulator, maintaining a 5.1V output with input voltages up to the input overvoltage threshold.The PW2601 is available in DFN-2x2-8L package. Standard products are Pb-free and Halogenfree
标签： pw2601
上传时间： 2022-02-11
上传用户：
该数字温度传感器具有13位(0.03125°C)分辨率，并且带有可由用户编程设置的非易失性温度上、下限温度报警值；通信速率可变的Single-Line 协议，最高速率可达25kb/s，支持多节点主从通信模式。
标签： 温度传感器
上传时间： 2022-07-01
上传用户：aben
Example091.判断控件类型.zip Example092.Line控件.zip Example093.使用Shape控件.zip Example094.引入系统监视器.zip Example095.媒体文件浏览器.zip Example096.列表播放媒体文件.zip Example097.在应用程序之间进行拖放操作.zip Example098.文本文件的拖放操作.zip Example099.图像和图像文件的拖放.zip Example100.使用WebBrowser控件浏览网页.zip
上传时间： 2013-05-22
上传用户：一诺88
In higher power applications to utilize the full line power and reduce line currentharmonics
标签： Pre-Regulator Interleaved Design Review
上传时间： 2013-06-04
上传用户：lepoke
该论文讨论如何采用一种串行无逆的Berlekamp-Massey(BM)算法,设计应用于DVB系统中的RS(204,188)信道编码/解码电路,并通过FPGA的验证.RS解码器的设计采用无逆BM算法,并利用串行方式来实现,不仅避免了求逆运算,而且只需用3个有限域乘法器就可以实现,大大的降低了硬件实现的复杂度,并且因为在硬件实现上,采用了3级流水线(pipe-line)的处理结构.RS编码器的设计中,利用有限域常数乘法器的特性对编码电路进行优化.这些技术的采用大大的提高了RS编/解码器的效率,节省了RS编/解码器所占用资源.
上传时间： 2013-08-05
上传用户：BOBOniu
随着信息宽带化和高速化的发展，以前的低速PCB已完全不能满足日益增长信息化发展的需要，而高速PCB的出现将对硬件人员提出更高的要求，仅仅依靠自
上传时间： 2013-05-22
上传用户：julin2009
