-
发射部分采用锁相环式频率合成器技术, MC145152和MC12022芯片组成锁相环,将载波频率精确锁定在35MHz,输出载波的稳定度达到4×10...
发射部分采用锁相环式频率合成器技术, MC145152和MC12022芯片组成锁相环,将载波频率精确锁定在35MHz,输出载波的稳定度达到4×10-5,准确度达到3×10-5,由变容二极管V149和集成压控振荡器芯片MC1648实现对载波的调频调制;末级功放选用三极管2SC1970,使其工作在丙类放大状态,提高了放大器的效率,输出功率达到设计要求。-Part of the launch phase-locked loop frequency synthesizer using technology, MC145152 and MC12022 PLL chips to lock in the exact carrier frequency 35MHz, the output carrier to achieve the stability of 4 × 10-5, reaching the accuracy of 3 × 10-5 by the varactor diode V149 and integration to achieve MC1648 chip VCO FM modulation on the carrier selection transistor amplifier at the end of class 2SC1970, to work in the C state to enlarge and improve the efficiency of the amplifier output power to meet the design requirements.
- 2022-08-18 16:37:11下载
- 积分:1
-
noiae
一个matlab中读取excel文件的例子,并且以plot的形式显示,(An example of a read excel file in matlab, and in the form of the plot,)
- 2017-08-07 20:10:57下载
- 积分:1
-
文字动画特效jquery插件
说明: 一款超酷波浪文字动画特效jquery插件(Jquery Plug-in for Super Cool Wave Text Animation Special Effects)
- 2019-01-08 10:33:35下载
- 积分:1
-
en.diacs_pspice
ltspice model for diac a bidirectional rectifier
- 2017-11-12 21:49:59下载
- 积分:1
-
学生信息管理,简单登录界面设计(java),图形设计初步,简单小程序...
学生信息管理,简单登录界面设计(java),图形设计初步,简单小程序-Student information management, interface design a simple login (java), the initial graphic design, a simple applet
- 2022-05-12 18:49:46下载
- 积分:1
-
Q-GDW集中器下行本地接口协议调试软件
用于电力集中器的本地下行调试,接口调试,串口波特率,抄表设置(Local Downlink Debugging for Power Concentrator)
- 2020-06-21 06:00:02下载
- 积分:1
-
水声通信代码大全
水声通信仿真代码,包括时间反转镜均衡,各种调制解调,信道仿真扥等(Underwater communication simulation code, including time reversal mirror equalization, modulation and demodulation, channel simulation such as Orlando)
- 2021-01-24 09:48:38下载
- 积分:1
-
修改 Adobe Premiere 6.5 或者 Adobe Premiere Pro 1.5 中所带字体文件,(“C:Program FilesCommon...
修改 Adobe Premiere 6.5 或者 Adobe Premiere Pro 1.5 中所带字体文件,(“C:Program FilesCommon FilesAdobeTypeSptAdobeFnt07.lst”)
使之能正确显示中文。-changes Adobe Premiere 6.5 or Adobe Premiere Pro 1.5 conveyed font file ( "C : Program Files Common Files Adobe TypeSpt AdobeFnt07.lst ") to enable them to the correct Chinese.
- 2022-05-14 18:10:31下载
- 积分:1
-
关于图的搜索
关于图的搜索-Search on map
- 2022-05-06 14:28:28下载
- 积分:1
-
备忘录模式-游戏角色状态01
说明: 一个简单的查找无向图最短路径的界面程序,练习用(A simple interface program for finding the shortest path of undirected graph.)
- 2020-06-24 18:00:01下载
- 积分:1