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测试测量 LT5528 WCDMA ACPR和AltCPR测量
 
ACPR (adjacent channel power ratio), AltCPR (alternatechannel power ratio), and noise are important performancemetrics for digital communication systems thatuse, for example, WCDMA (wideband code division multipleaccess) modulation. ACPR and AltCPR are bothmeasures of spectral regrowth. T ...
VHDL/FPGA/Verilog The Hilbert Transform is an important component in communication systems, e.g. for single sideband m
The Hilbert Transform is an important component in communication systems, e.g. for single sideband modulation/demodulation, amplitude and phase detection, etc. It can be formulated as filtering operation which makes it possible to approximate the Hilbert Transform with a digital filter. Due to the n ...
技术资料 基于DSP的256PPM调制设计
· 摘要：  FSO (Free space optical)光线光通信结合了无线通信和光纤通信的优点,其关键技术在于收发端机的研制;PPM(PulsePosition Modulation)脉冲位置调制具有低的平均功率和较高的峰值功率,特别适合于无线光通信.该文根据PPM调制信号的特点和DSP技术,提出了一种用DSP实现256PPM调制的方案,整个方案有较大的灵 ...
技术资料 智能抽油机节能器研究与开发
· 摘要：  FSO (Free space optical)光线光通信结合了无线通信和光纤通信的优点,其关键技术在于收发端机的研制;PPM(PulsePosition Modulation)脉冲位置调制具有低的平均功率和较高的峰值功率,特别适合于无线光通信.该文根据PPM调制信号的特点和DSP技术,提出了一种用DSP实现256PPM调制的方案,整个方案有较大的灵 ...
单片机编程 AD9859芯片资料
FEATURES400 MSPS internal clock speedIntegrated 10-bit DAC32-bit tuning wordPhase noise ≤ –120 dBc/Hz @ 1 kHz offset (DAC output)Excellent dynamic performance>75 dB SFDR @ 160 MHz (±100 kHz offset) AOUTSerial I/O control1.8 V power supplySoftware and hardware controlled power-down48-lead TQFP/EP ...
技术资料 单相全桥SPWM逆变器的研究
建立了单相全桥电压型SPWM（Sinusoidal Pulse-width modulation，正弦脉宽调制）逆变器的数学模型，分析了设置死区时系统中IGBT(Insulated –Gate Bipolar Transistor，绝缘栅双极晶体管)的通断状态，用MATLAB/Simulink中的基础模块模拟逆变器的工作状态、死区效应、死区补偿和控制系统，用数学分析和实验波形对仿真结果进 ...
文件格式 This project aim was to build wireless software modem for data communication between two computers
This project aim was to build wireless software modem for data communication
between two computers using an acoustic interface in the voice frequency range (20Hz–
20,000Hz). The transmitting antenna is a speaker (frequency response of: 90Hz –
20,000Hz) and the receiving antenna is a microphone (fr ...
书籍 Transceiver and System Design
T
his book covers basic communications theory and practical imple-
mentation of transmitters and receivers. In so doing, I focus on dig-
ital modulation, demodulation methods, probabilities, detection of
digital signals, and spread spectrum system design and analysis. This book
was written for those ...
技术资料 设计一款LLC谐振半桥式功率转换器
TI德州仪器官方英文文档。Half-Bridge Power Converter Designing an LLC Resonant While converters with high-voltage inputs are often designed with resonant switching to achieve higher efficiency, half-bridge power stages have commonly been used for isolated, medium-power applications, an benefits. ...
技术资料 基于FPGA的PMSM简易正弦驱动控制的研究.rar
本文以PMSM(Permanent Magnet Synchronous Machine)简易正弦驱动控制电路的模块化设计与FPGA(Field Programmable Gate Array)实现为工程背景展开，分别分析了转子位置预估模块与PWM(Pulse-Width Modulation)模块的算法原理，提出了其EDA(Electronic Design Automatic)实现方案，并给出了MATLAB/Simulink仿真与实验结果。 首 ...