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扩频通信直接扩频论文
扩频通信由于具有抗干扰能力强，隐蔽性好，容易实现多址传输等优点而在移动通信、无线数据通信等领域得到越来越广泛的应用。其中直接序列扩频通信是目前使用最典型的扩频工作方式。
- 2020-12-02下载
- 积分：1
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Turbulence modeling for CFD 3rd wilcox
【实例简介】Turbulence Modeling for CFD_David C.Wilcox(2006_3rd_E).pdf
- 2021-07-20 00:31:46下载
- 积分：1
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matlab实现lamb波的频散曲线
Lamb波的频散曲线是进行超声Lamb波无损检测的重要依据。本程序对Rayleigh2Lamb方程进行了分析,给出了无限大板中Lamb波频散曲线的数值计算方法,通过Matlab软件对求解过程进行编程,绘制出Lamb波在铝板中传播的相速度和群速度曲线,并通过试验进行了验证,对推广应用Lamb波进行无损检测具有实际意义。
- 2020-11-29下载
- 积分：1
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WPF C# 人事管理系统
水晶报表，xaml，人事管理增删改查等等，基本功能都有，包括数据库，很齐全
- 2020-11-30下载
- 积分：1
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通用投票器.zip
通用投票器.zip专业的刷票工具，真实可用，无毒
- 2020-11-29下载
- 积分：1
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Lumped Elements for RF and Microwave Circuits (Bahl 2003)
Lumped Elements for RF and Microwave Circuits英文版，射频微波电路入门Lumped Elements for RFand microwave circuitsFor a listing of recent titles in the Artech House Microwave library,turn to the back of this bookLumped Elements for RFand microwave circuitsInder bahlArtech houseBoston londonwww.artechhouse.comLibrary of Congress Cataloging-in-Publication DataBahl, I.J.Lumped elements for RF and microwave circuits /Inder Bahlp cm.--(Artech House microwave libraryncludes bibliographical references and indexISBN 1-58053-309-4(alk. paper1. Lumped elements(Electronics) 2. Microwave integrated circuits. 3. Radiofrequency integrated circuits. 4. Passive components. I. Title. II. SeriesTK7874.54B342003621.38132-dc212003048102British Library Cataloguing in Publication DataBahl, I. J. Inder jit)Lumped elements for RF and microwave circuits.-(Artech House microwave library1. Radio circuits 2. Microwave circuits I. Title621.38412ISBN1-58053-3094Cover design by Igor Valdmar2003 ARTECH HOUSE, INC.685 Canton StreetNorwood Ma 02062All rights reserved Printed and bound in the United States of America. no part of this bookmay be reproduced or utilized in any form or by any means, electronic or mechanical, includingphotocopying, recording, or by any information storage and retrieval system, without permissionn writing from the publisherall terms mentioned in this book that are known to be trademarks or service marks have beenappropriately capitalized. Artech House cannot attest to the accuracy of this information. Useof a term in this book should not be regarded as affecting the validity of any trademark or servicemarkInternational Standard Book Number: 1-58053-309-4Library of Congress Catalog Card Number: 200304810210987654321To my adorable grandsons, Karan and Rohan Kaushal, with whom I play, cry,and laugh, and who have provided me with the idea and inspiration towrite this bookContentsPrefaceXVAcknowledgmentsXXIntroduction1.1 History of Lumped Elcements)Why Use Lumped Elements for rF andMicrowave circuits1.3 L, C, R Circuit Elements1.4 Basic Design of Lumped Elements4.1 Capacitor1.4.2 Inductor4.3 Resistorumped-Element Modelin1. 6 Fabrication1.7 ApplicationsReferencesInductors2.1 IntroductionLumped Elements for RF and Microwave Circuits2.2 Basic Definitions2.2.1 Inductance2.2.2 Magnetic Energy182.2.3 Mutual Inductance202. 2. 4 Effective Inductance202.2.5Imedang2.2.6 Time Constant2.2.7 Quality Factor222.2.8 Self-Resonant Frequency232.2.9aximum Current Ratin2.2.10 Maximum Power Rating2.2.11 Other Parameters232.3 Inductor Configurations242.4 Inductor models2. 4. 1 Analytical Models252.4.2 Coupled-Line Appiroach282.4.3 Mutual Induse arppi342.4.4 Numerical Approach362.4.5 Measurement-Based model382.5 Coupling Between Inductors452.5. 1 Low-Resistivity Substrates2.5.2 High-Resistivity Substrates462.6 Electrical Representations2.6. 1 Series and Parallel representations2.6.2 Network Representations51References52Printed Inductors573.1 Inductors on Si Substrate583.1.1 Conductor Loss3.1.2 Substrate Loss3. 1.3 Layout Considerations3.1.4 Inductor Model3. 1.5 Q-Enhancement Techniques3.1.6 Stacked-Coil Inductor803.1.7 Temperature Dependence84
- 2021-05-07下载
- 积分：1
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多元线性回归最小二乘法Java 实现
基于java 实现的线性回归分析，作业务逻辑的工程师，肯定会用的上
- 2020-12-06下载
- 积分：1
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两块stm32 spi通信，使用DMA
本例程主要是用于两块stm32之间的spi通信，用到了ＤＭＡ节省了ｃｐｕ的的时间，大大提高了ｃｐｕ的利用率
- 2021-05-06下载
- 积分：1
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基于simulink的AM、DSB、SSB调制解调仿真
基于simulink的AM、DSB、SSB调制解调仿真
- 2020-12-05下载
- 积分：1
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动态规划法、贪心算法、回溯法、分支限界法解决0-1背包
1) 动态规划法求解问题的一般思路，动态规划法求解本问题的思路及其C/C++程序实现与算法的效率分析。2) 贪心算法在0-1背包问题求解中的应用3) 回溯法求解问题的一般思路，回溯法求解本问题的思路及其C/C++程序实现与算法的效率分析。4) 分支限界法求解问题的一般思路，分支限界法求解本问题的思路及其C/C++程序实现与算法的效率分析。有代码！！
- 2020-12-02下载
- 积分：1
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