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无线通信 多输入多输出天线系统MIMO分析
多输入多输出(MIMO)天线系统是发送端和接收端同时采用多个天线单元的分集接收系统。具有T M 副发送天线、R M 副接收天线的MIMO 系统模型。
无线通信 米波有源相控阵数字化TR组件设计
本文设计了一套完整的数字化 T/R 组件框图、电路。并主要对大功率固态放大器和数字接收系统进行了硬件设计和实验。针对数字化 T/R 组件在雷达上应用所面临的一些问题,包括:多通道的检测和校准;系统噪声系数的等效;高速串行传输技术的选用以及分布式频率源对系统的影响,本文进行了相关的分析。
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无线通信 无线识别装置
本装置采用凌阳61单片机作为主控器,配合常用编码解码芯片PT2262/2272实现阅读器对应答器的识别,编码数据的收发控制,以及信息的存储读写功能。使用ASK调制方式的收发模块很好的实现了应答器和阅读器之间的数据传输和能量交换。应答器采用干电池供电时,具有较高的正确率,较短的识别时间和较大的耦合线圈间距。在间距 ...
无线通信 S参数的设计与应用
Agilent AN 154 S-Parameter Design Application Note S参数的设计与应用
The need for new high-frequency, solid-state circuitdesign techniques has been recognized both by microwaveengineers and circuit designers. These engineersare being asked to design solid state circuitsthat will operate at higher an ...
ARM LPC314x系列ARM微控制器用户手册
The NXP LPC314x combine a 270 MHz ARM926EJ-S CPU core, High-speed USB 2.0OTG, 192 KB SRAM, NAND flash controller, flexible external bus interface, three channel10-bit A/D, and a myriad of serial and parallel interfaces in a single chip targeted atconsumer, industrial, medical, and communication mark ...
ARM LPC1850 Cortex-M3内核微控制器数据手册
The LPC1850/30/20/10 are ARM Cortex-M3 based microcontrollers for embeddedapplications. The ARM Cortex-M3 is a next generation core that offers systemenhancements such as low power consumption, enhanced debug features, and a highlevel of support block integration.The LPC1850/30/20/10 operate at CPU ...
ARM LPC1300系列产品勘误数据手册
On the LPC13xx, programming, erasure and re-programming of the on-chip flash can be performed using In-System Programming (ISP) via the UART serial port, and also, can be performed using In-Application Programming (IAP) calls directed by the end-user code. For In-System Programming (ISP) via the UAR ...
ARM LPC315x系列ARM微控制器用户手册
The NXP LPC315x combine an 180 MHz ARM926EJ-S CPU core, High-speed USB 2.0OTG, 192 KB SRAM, NAND flash controller, flexible external bus interface, an integratedaudio codec, Li-ion charger, Real-Time Clock (RTC), and a myriad of serial and parallelinterfaces in a single chip targeted at consumer, in ...
机械电子 电子工程师必备基础知识手册(七)常用元器件的识别
一、电阻
电阻在电路中用“R”加数字表示,如:R15表示编号为15的电阻。电阻在电路中的主要作用为分流、限流、分压、偏置、滤波(与电容器组合使用)和阻抗匹配等。