Word file for AM Modulation
標簽: Modulation Word file for
上傳時間: 2013-12-20
上傳用戶:希醬大魔王
講述了未來收音機的發(fā)展前景。FM可能將會被DAB取代,AM可能將會被DRM取代。
上傳時間: 2015-12-06
上傳用戶:youth25
I analysis the undermodulation,total modulation and over modulation.And the power distribution ,spectrum.you can understand the basic of am.
標簽: modulation undermodulation distribution the
上傳時間: 2013-12-17
上傳用戶:sevenbestfei
This project allows you to learn communication systems in greater depth. It contains the Simulink files (*.mdl) which are block design files of various communication systems such as AM, DSB-SC, FM, PLL, Data Acquisition, Digital Data Transmission, PCM and Delta Modulation. The idea here is to implement experiments of a traditional communication lab using Simulink. Most of the block diagrams are self explanatory. More information on the systems and their implementation can be found in the word documents included in the lab directories
標簽: communication Simulink contains project
上傳時間: 2013-12-09
上傳用戶:lz4v4
am調(diào)制解調(diào),使用matlab 制作的。如果還需要fm與pm調(diào)制與解調(diào)的`~請于我聯(lián)系
標簽: 調(diào)制解調(diào)
上傳時間: 2013-12-21
上傳用戶:pinksun9
The purpose of this book is to present detailed fundamental information on a global positioning system (GPS) receiver. Although GPS receivers are popu- larly used in every-day life, their operation principles cannot be easily found in one book. Most other types of receivers process the input signals to obtain the necessary information easily, such as in amplitude modulation (AM) and frequency modulation (FM) radios. In a GPS receiver the signal is processed to obtain the required information, which in turn is used to calculate the user position. Therefore, at least two areas of discipline, receiver technology and navigation scheme, are employed in a GPS receiver. This book covers both areas.
標簽: Fundamentals_of_Global_Positionin g_System_Receivers
上傳時間: 2020-06-09
上傳用戶:shancjb
AM-OLED
標簽: AM-OLED
上傳時間: 2013-06-05
上傳用戶:eeworm
AM超外差接收機的仿真:1.熟悉System View仿真軟件的使用方法。2.掌握AM超外差收音機的工作原理,學習用System View元件庫構(gòu)建一個基本的AM超外差收音機系統(tǒng)。3.
上傳時間: 2013-07-27
上傳用戶:dong
直接數(shù)字合成(DDS)技術(shù)采用全數(shù)字的合成方法,所產(chǎn)生的信號具有頻率分辨率高、頻率切換速度快、頻率切換時相位連續(xù)、輸出相位噪聲低和可以產(chǎn)生任意波形等諸多優(yōu)點。本文研究的是一種基于DDS/FPGA的多波形信號源系統(tǒng),其中,DDS技術(shù)是其核心技術(shù)。DDS可以精確地控制合成信號的三個參量:幅度、相位以及頻率,因此利用DDS技術(shù)可以合成任意波形。但因其數(shù)字化合成的固有特點,使其輸出信號中存在大量雜散信號。雜散信號的主要來源是:相位截斷帶來的雜散信號;幅度量化帶來的雜散信號;DAC的非線性特性帶來的雜散信號。這些雜散信號嚴重影響了合成信號的頻譜純度。因此抑制這些雜散信號是提高合成信號譜質(zhì)的關(guān)鍵。 本文在研究各種抑制DDS雜散技術(shù)的基礎(chǔ)上,提出了中和加擾技術(shù),這可以在很大程度上減小雜散對DDS輸出信號譜質(zhì)的影響。 EP1S808956C6是一款高性能的FPGA芯片,其超強的數(shù)據(jù)處理能力十分適合應(yīng)用于DDS多波形信號源的開發(fā)。在QuartusⅡ平臺下運用Verilog HDL語言和原理圖設(shè)計可以很方便地應(yīng)用各種抑制雜散信號的方法來提高輸出信號的譜質(zhì)。 結(jié)合高速DDS技術(shù)和FPGA兩者的優(yōu)點,本文設(shè)計了一種基于DDS/FPGA的多波形信號源,它能完成正弦波、余弦波、三角波、鋸齒波、方波、AM、SSB、FM、2ASK、2FSK、π/4-QDPSK等多種信號。使得所設(shè)計的信號源可以適應(yīng)多種不同的工作環(huán)境,給工作帶了方便。
上傳時間: 2013-07-27
上傳用戶:sc965382896
FM發(fā)射器電路圖全集(PDF下載),有整體有局部,好!
上傳時間: 2013-06-03
上傳用戶:yuchunhai1990
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