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Description: 一个光纤调制解调器的PCB图,用PROTEL99制作-a fiber modem PCB map, produced with PROTEL99
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Size: 166396 |
Author: 张善伟 |
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Description: 一个光纤调制解调器的PCB图,用PROTEL99制作-a fiber modem PCB map, produced with PROTEL99
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Size: 165888 |
Author: 真诚的猪 |
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Description: 凭借它在手机技术领域的地位、在射频半导体工艺方面的广泛知识，飞思卡尔提供了符合IEEE 802.15.4标准的MC13192射频数据调制解调器。这种功能丰富的双向2.4GHz收发器带有一个数据调制解调器，可在ZigBee™ 技术应用中使用。它还具有一个优化的数字核心，有助于降低MCU处理功率，缩短执行周期。4个定时比较器使用一个性能较低、价格低廉的MCU，从而能够降低成本。广泛的中断维修服务使软件开发更具灵活性。PF IC和MCU之间使用串行外围接口（SPI）连接，从而使用户能够使用飞思卡尔庞大产品系列中的任何一种MCU。-by virtue of its mobile phone technology in the field of the status of the RF semiconductor technology in the wide range of knowledge, Freescale's compliance with the IEEE 802.15.4 standard MC13192 RF data modem . This feature-rich two-way 2.4 GHz transceiver with a data modem, the ZigBee
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Size: 97280 |
Author: jibing |
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Description:
Platform: |
Size: 163840 |
Author: kcn |
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Description: 本文首先研究可4一DQPsK调制解调系统中调制部分的基本原理和各个模块的设计方案，重点研究成形滤波器和直接数字频率合成器 (DireetoigitalFrequeneySynihesis，简称DDS)，并针对各个关键模块算法进行matlab设计仿真，展示仿真结果。其次，研究调制解调系统解调部分的基本原理和各个模块的设计方案，重点研究差分解调，数字下变频和位同步算法，也针对其各个关键模块进行算法的Matlab设计仿真。然后用Matlab对整个系统进行理论仿真，得出结论。在此基础
上，采用超高速集成电路硬件描述语言(VeryHighspeedxntegatedeireuitHardware
DescriptionLan即age，简称VHDL)在Altera公司 Quartusll7.0开发环境下设计并实现各个功能块，通过仿真来证明功能正确性。再次，用 Protel99SE进行印制电路板(Prinicircuitboard，简称PcB)设计，从原理图到封装，再到布局布线。焊接调试完毕后，将设计好的程序下载至FPGA主芯片。最后观察信号时域波形、星座图、眼图。本系统信源输入符号速率100kbPs，调制中频10MHz。测试结果验证系统的正确性，实现了从数字基带到中频的可4一DQPSK调制解调系统-This study is the first 4 1 DQPsK modem modulation system, part of the basic principles and design of each module, focusing on shaping filter and a direct digital frequency synthesizer (DireetoigitalFrequeneySynihesis, referred to as DDS), and to address all the key modules algorithm matlab design simulation to show simulation results. Second, the study of modulation and demodulation system demodulation part of the basic principles and design of each module, focusing on differential demodulation, digital down conversion and bit synchronization algorithm, but also for its various key module of the Matlab algorithm design and simulation. Then use the Matlab simulation of the entire system theory, reach a conclusion. On this basis,
, Using ultra-high speed integrated circuit hardware description language (VeryHighspeedxntegatedeireuitHardware
DescriptionLan that age, referred to as VHDL) in the Altera Corporation Quartusll7.0 development environment to design and implement the variou
Platform: |
Size: 5457920 |
Author: cai |
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Description: Specifications of Anydata DTGS800 CDMA2000/1X modem
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Size: 86016 |
Author: ppbppb |
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Description: 毕设论文+源码+原理图PCB图+答辩资料+文献翻译等全套毕设资料。能实现家电远程控制，操作提示音、六位密码身份认证、密码修改和密码掉电保存功能，实现盗警，煤气泄漏手机短信息方式远程报警等功能。利用SM8952AC25P、MT8870、TC35 modem和各类家居传感器设计制作一款GSM智能家居控制系统样机。(The complete set of complete set of data is set up with the paper + source code + principle map PCB chart + plea data + literature translation. It can realize remote control of household appliances, operation prompting, six bit password authentication, password modification and password power saving, and realize the functions of stealing police, gas leakage, mobile phone short message, remote alarm, etc. A prototype of GSM intelligent home control system is designed and manufactured by using SM8952AC25P, MT8870, TC35 modem and all kinds of home sensors.)
Platform: |
Size: 14963712 |
Author: girl_lily |
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