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RF Engineering

  • 2.4GHz射頻收發機、單回路8051MCU以及32kB閃存1、CC2510描述CC2510是強大的2.4GHz單芯片系統

    2.4GHz射頻收發機、單回路8051MCU以及32kB閃存1、CC2510描述CC2510是強大的2.4GHz單芯片系統,設計用于低功耗及低電壓無線通信應用。通過2.4GHz無線電收發機,單周期8051MCU以及32kB閃存的整合,此全集成器件使得開發者設計的完成變得前所未有簡單,同時還提供多種多樣的應用可能性。這款2.4GHz單芯片系統(SoC)作為低成本器件,包含了業界領先的CC2500 RF收發機、基于8051核心高性能低功耗微控制器、集成的32kB閃存及外設。

    標簽: 2510 2.4 GHz 8051

    上傳時間: 2013-12-23

    上傳用戶:宋桃子

  • To introduce software process models To describe three generic process models and when they may be

    To introduce software process models To describe three generic process models and when they may be used To describe outline process models for requirements engineering, software development, testing and evolution To explain the Rational Unified Process model To introduce CASE technology to support software process activities

    標簽: process models introduce describe

    上傳時間: 2013-12-07

    上傳用戶:dbs012280

  • A paper that I presented on Supervisory Control and Data Acquisition (SCADA) won the second prize at

    A paper that I presented on Supervisory Control and Data Acquisition (SCADA) won the second prize at the symposium conducted by the Electrical and Electronics Engineering department of the SRM University. Other topics on which I presented papers were Performance enhancement of wireless sensor networks using directional antennas, Smart card application and wireless communication. Also my research idea titled “Wavelet Based Image Compression Using SPIHT Algorithm “secured third prize in a technical festival.

    標簽: Supervisory Acquisition presented Control

    上傳時間: 2014-01-12

    上傳用戶:zhouli

  • 對射頻設計者來說

    對射頻設計者來說,高速的信號處理器加上高性能的數模/模數轉換器的進步,使得將更高的中頻數字化成為可能。從而進一步減少了射頻(RF)部分,并且在整體上提高了射頻(RF)部分的性能。圖1-1是一個現代無線數字接收機的功能模塊框圖。這里,射頻的模擬部分被限制在信號前端,而幾乎全部的基帶和中頻(IF)處理都是數字實現的。詳細介紹在射頻(RF)和中頻(IF)中所應用到的現代方法,這本書的其它章節將進一步介紹數字信號處理和傳輸數據的解碼

    標簽: 射頻設計

    上傳時間: 2017-06-09

    上傳用戶:youke111

  • 這是支持MF RC500 MIFARE 讀寫集成電路IC的有關射頻設計的應用筆記。意在提供對MIFARE 射頻接口(ISO 14443A)所需的理解來設計具體天線應用和匹配電路

    這是支持MF RC500 MIFARE 讀寫集成電路IC的有關射頻設計的應用筆記。意在提供對MIFARE 射頻接口(ISO 14443A)所需的理解來設計具體天線應用和匹配電路,為了使無接觸MIFARE卡通信有最優表現。本文給出了系統的RF部分背景,以及如何為標準應用設計和調試天線的過程概述。詳細說明了兩種不同的天線和匹配概念以及它們的設計實例。還描述了完整的調試天線的步驟。作為附件的一部分,有興趣的讀者會發現RF接口的詳細理論描述

    標簽: MIFARE 14443A 500 ISO

    上傳時間: 2014-01-07

    上傳用戶:ynsnjs

  • 隨著計算機網絡的蔓延

    隨著計算機網絡的蔓延,無線局域網(wLAN)成為高速發展的無線通信技術 在計算機網絡中的通信移動性、多媒體應用等的實現手段。無線局域網作為有線 網絡的延伸及重要補充,其安全問題也是人們關注的焦點 無線網絡的射頻(RF) 數據傳送方式更使其信息及網絡安全問題顯得尤為突出。

    標簽: 計算機網絡

    上傳時間: 2017-06-19

    上傳用戶:aysyzxzm

  • linux下快速進入目錄的工具 qdir 解壓后運行install即可

    linux下快速進入目錄的工具 qdir 解壓后運行install即可,最好將qd.sh文件的倒數第而行改為rm -rf "$QD"。比如在工作目錄下 \home\AAA\BBB\CCC\DDD\EEE\FFF\GGG,運行qd –s . 即可,用qd –e可以看到: 1 \home\AAA\BBB\CCC\DDD\EEE\FFF\GGG 我們又到一個目錄,\home\MyName\ AAA\BBB\CCC\DDD\EEE\FFF\GGG, 運行qd –s . 2,可以將這個目錄設置在第二個位置,用qd –e可以看到: 1 \home\AAA\BBB\CCC\DDD\EEE\FFF\GGG 2 \home\MyName\ AAA\BBB\CCC\DDD\EEE\FFF\GGG 這樣我們在任何目錄下,鍵入qd –e 1就立刻進入\home\AAA\BBB\CCC\DDD\EEE\FFF\GGG目錄,鍵入qd –e 2就立刻進入\home\MyName\ AAA\BBB\CCC\DDD\EEE\FFF\GGG ,可以做到工作目錄瞬間轉換。

    標簽: install linux qdir 目錄

    上傳時間: 2014-01-20

    上傳用戶:520

  • A certification path is an ordered list of certificates starting with a certificate issued by the re

    A certification path is an ordered list of certificates starting with a certificate issued by the relying party s trust root, and ending with the target certificate that needs to be validated. Certification path validation procedures are based on the algorithm supplied in ITU-T Recommendation X.509 and further defined in Internet Engineering Task Force (IETF) Request for Comments (RFC) 3280. Certification path processing verifies the binding between the subject distinguished name and/or subject alternative name and the subject public key defined in the target certificate. The binding is limited by constraints, which are specified in the certificates that comprise the path, and inputs that are specified by the relying party. To ensure secure interoperation of PKI-enabled applications, the path validation must be done in accordance with the X.509 and RFC 3280 specifications. This document provides the test assertions and the test cases for testing path validation software against these specifications.

    標簽: certification certificates certificate starting

    上傳時間: 2017-07-31

    上傳用戶:清風冷雨

  • The Kalman filter is an efficient recursive filter that estimates the state of a linear dynamic syst

    The Kalman filter is an efficient recursive filter that estimates the state of a linear dynamic system from a series of noisy measurements. It is used in a wide range of engineering applications from radar to computer vision, and is an important topic in control theory and control systems engineering. Together with the linear-quadratic regulator (LQR), the Kalman filter solves the linear-quadratic-Gaussian control problem (LQG). The Kalman filter, the linear-quadratic regulator and the linear-quadratic-Gaussian controller are solutions to what probably are the most fundamental problems in control theory.

    標簽: filter efficient estimates recursive

    上傳時間: 2017-08-06

    上傳用戶:風之驕子

  • 如今的移動電話不僅要支持蜂窩頻率

    如今的移動電話不僅要支持蜂窩頻率,還要支持那些用于移動電視、藍牙、WLAN和定位服務的非蜂窩特性。由于每次手機換代都縮小了天線的可用空間,天線被包在相機和鍵盤電路周圍并重新安排路徑,導致天線效率降低。一部分性能損失可以通過天線調諧得到恢復,即使用動態阻抗調諧技術根據工作頻率和環境條件優化天線的性能。然而,所面臨的挑戰是,任何成功的天線調諧方案均須滿足損耗低、線性度高、能夠處理很高強度的RF信號且耗能少的要求。

    標簽: 移動電話 蜂窩 頻率

    上傳時間: 2017-08-06

    上傳用戶:hfmm633

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