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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
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几个通用过程,包括内存拷贝,移动和其他操作的例子
几个通用过程,包括内存拷贝,移动和其他操作的例子-Several generic process, including the memory copy, mobile and other operations example
- 2022-12-10 06:20:02下载
- 积分:1
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F2812 FLASH烧写软件,大家都来看看哦
F2812 FLASH烧写软件,大家都来看看哦-F2812 FLASH programmer software, we all look at看哦
- 2022-05-01 02:24:21下载
- 积分:1
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j2me手机游戏代码,内含图片素材和源代码文件
j2me手机游戏代码,内含图片素材和源代码文件-j2me mobile game code, including picture material and source code files
- 2023-07-26 08:30:04下载
- 积分:1
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自己用delphi写的一个小游戏 贪吃蛇
自己用delphi写的一个小游戏 贪吃蛇-Delphi write their own using a small game Snake
- 2023-05-12 12:10:02下载
- 积分:1
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labview 图形库,方便图形语言编程.工控使用.
labview 图形库,方便图形语言编程.工控使用.-LabVIEW graphical library, convenient graphical programming language. Industrial use.
- 2023-03-22 07:10:03下载
- 积分:1
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SCM typical keyboard matrix scanning procedure : Uncompressed password, c langua...
单片机典型矩阵键盘扫描程序:无压缩密码,c语言代码-SCM typical keyboard matrix scanning procedure : Uncompressed password, c language code
- 2022-03-19 22:05:10下载
- 积分:1
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用于实现上面应用程序的相关数据集.是matlab数据文件格式的
用于实现上面应用程序的相关数据集.是matlab数据文件格式的-used to achieve the above applications related data sets. Matlab is the data file format
- 2023-04-15 11:10:03下载
- 积分:1
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对一些问题的独立计算,可以自动计算…
独数问题计算,可以自动计算和判断给定的独数矩阵,然后分析计算-Independent calculation of the number of problems, you can automatically calculate and judge the independence number of a given matrix, and then analysis
- 2022-07-23 18:47:33下载
- 积分:1
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这是用matlab编写的显示积分方法中心差分法的源程序,可用于求解微分方程描述的工程问题和相关仿真...
这是用matlab编写的显示积分方法中心差分法的源程序,可用于求解微分方程描述的工程问题和相关仿真-This is prepared using matlab central difference integration method shows that the source method can be used to solve differential equations to describe the engineering problems and related simulation
- 2022-03-23 06:06:48下载
- 积分:1