搜索资源列表
PhaseLockedLoop
- ％The phase locked loop(PLL),adjusts the phase of a local oscillator ％w.r.t the incoming modulated signal.In this way,the phase of the ％incoming signal is locked and the signal is demodulated.This scheme ％is used in PM and FM as well. ％We wi
HT82K95
- HT82K95E应用范例 详细的usb程序 HT82K95E datasheet -HT82K95E datasheet Features Operating voltage: fSYS=6M/12MHz: 3.3V~5.5V Low voltage reset function 32 bidirectional I/O lines (max.) 8-bit programmable timer/event counter with overflo
huawei_tianxianjishu20040520
- 华为公司的天线应用技术，无线网络规划培训教程，形象讲解天线技术，偏重于讲微波天线-Huawei applied technology antenna, wireless network planning training course, the image on the antenna technology, microwave antenna emphasis on speaking
Pllrrrr
- 锁相环（非科斯塔斯环） 对波动频率进行锁定，并且对信号进行解调。画图7个显示过程及参数-The phase locked loop(PLL),adjusts the phase of a local oscillator.the phase of the incoming signal is locked and the signal is demodulated show the process and references in 7 figures
Reflection_Oscillator
- Reflection Oscillator Design Tutorial with ads
slla120
- 锁相环是一种反馈电路，其作用是使得电路上的时钟和某一外部时钟的相位同步。PLL通过比较外部信号的相位和由压控晶振（VCXO）的相位来实现同步的，在比较的过程中，锁相环电路会不断根据外部信号的相位来调整本地晶振的时钟相位，直到两个信号的相位同步。-PLL is a feedback circuit, and its role is to make the clock circuit and a phase of external clock synchronization. PLL signal
Run_time_calibration_of_the_internal_RC_oscillator
- 如何通过UART来校准内部RC振荡器。这种方法是基于LIN协议上使用的方法。-Run-time calibration of the internal RC oscillator (19 pages, revision A, updated 09/04) This application note describes how to calibrate the internal RC oscillator via the UART. The method used is based on t
MT8870DataSheet
- The MT8870D/MT8870D-1 is a complete DTMF receiver integrating both the bandsplit filter and digital decoder functions. The filter section uses switched capacitor techniques for high and low group filters the decoder uses digital counting te
PCD5003A
- The PCD5003A is a very low power decoder and pager controller specifically designed for use in new generation radio pagers. The architecture of the PCD5003A allows for flexible application in a wide variety of radio pager designs. The PCD5003
201003
- 89c51单片机控制西门子TC GSM模块收发短信。注意晶振频率为11.0592M。-89c51 SCM control Siemens TC GSM module send and receive text messages. Note that oscillator frequency 11.0592M. .
Magnetic
- 磁珠专用于抑制信号线、电源线上的高频噪声和尖峰干扰，还具有吸收静电脉冲的能力。磁珠是用来吸收超高频信号，像一些RF电路，PLL，振荡电路，含超高频存储器电路（DDR SDRAM，RAMBUS等）都需要在电源输入部分加磁珠，而电感是一种蓄能元件，用在LC振荡电路，中低频的滤波电路等，其应用频率范围很少超过50MHZ。-Inhibition of signal lines dedicated to beads, the power line frequency noise and interfere
WSD
- Based on the Duffing equation, a Duffing oscillator algorithm (DOA) to improve the signal-to-noise ratio (SNR) was presented. By simulated and experimental data sets, it was proven that the signal-to-noise ratio (SNR) of the weak signal could be gr
system
- GPS与北斗双模授时的压控晶振校频系统设计-GPS and Compass mode voltage-controlled crystal oscillator timing and frequency calibration system
UART_1
- DSPIC30F5011串口测试程序，开发环境为MPLAB，设置时钟晶振4MHZ-DSPIC30F5011 serial port test program, the development environment MPLAB, set the clock oscillator 4MHZ
Demodulation-Method-for-SSB
- ssb解调方法，不是相干解调，不需要载波恢复，比较实用。- A single sideband (SSB) demodulation method is described, in which frequency mixing is not required. The proposed method is based on the phase shift method, but no local oscillator is employed.
jtcurran_oscpll_taes2012
- Digital GNSS PLL Design Conditioned on Thermal and Oscillator Phase Noise
7MSP430F149-use-USART1-to-define-P4
- 使用MSP430F149芯片，透过串口与电脑通信，波特率9600,8数据，无校验。使用32.768k晶振，使用P3.6和P3.7口作为发送和接收口，使用异步通信USART1，采用查询形式。实现通信，当单片机接收到以S结尾以W开始的字符串时，单片机会把中间的数据赋值给P4口。-MSP430F149 chip through the serial port to communicate with the computer, baud rate 9600 data, no parity. 32.768
Code_NCO.zip
- 码数控振荡器相位累加器的位数N为32,利用verilog HDL语言在Quartus II 9.1中具体实现了载波和码NCO的设计。,The code numerically controlled oscillator phase accumulator bits N 32 verilog HDL language in the concrete realization of the design of the carrier and code NCO Quartus II 9.1.
GPS
- 在有限的实验条件下，为验证高动态软件GPS接收机信号的捕获和跟踪模型，提出了一种基于软件GPS 接收平台的高动态GPS数字中频信号模拟方法。介绍了软件GPS接收平台的基本结构框架，并根据高动态环境 下伪随机码的多普勒效应及本地振荡器的频率误差对接收信号的影响，推导并建立了一种较精确的高动态GPS 数字中频信号模型。为使模型适用于更加复杂的环境，通过设置接收信号的噪声幅值来调整信噪比大小，以确 定所需的信号强度；在信号参数的设置过程中调整入射信号与反射信号的幅度比值及反射信号的时间
stm32f0_gpsdo
- this is GPS disciplined oscillator source code, based on 1PPS GPS signal and NMEA protocol