The advent of modern wireless devices, such as smart phones and MID 1 terminals, has revolutionized the way people think of personal connectivity. Such devices encompass multiple applications ranging from voice and video to high-speed data transfer via wireless networks. The voracious appetite of twenty-first century users for supporting more wireless applications on a single device is ever increasing. These devices employ multiple radios and modems that cover multiple frequency bands and multiple standards with a manifold of wireless applications often running simultaneously.
標簽: Architectures Wireless Receiver Design and
上傳時間: 2020-06-01
上傳用戶:shancjb
This book describes a unifying framework to networked teleoperation systems cutting across multiple research fields including networked control system for linear and nonlinear forms, bilateral teleoperation, trilateral teleoperation, multilateral teleoperation, cooperative teleoperation, and some teleoperation application examples. Networked control has been deeply studied at the intersection of systems & control and robotics for a long time, and many scholarly books on the topic have been already published. Nevertheless, the approach remains active even in several new research fields, such as bilateral teleoperation, single master and multiple slaves, trilateral teleoperation, and multilateral teleoperation
標簽: Teleoperation Intelligent Networked Control
上傳時間: 2020-06-10
上傳用戶:shancjb
ADS1118模塊資料熱電偶測量文檔資料硬件參考設計及MSP430軟JDEMO代碼:430BOOST-ADS1118 Booster Pack.pdfADS1118-english.pdfads1118.pdfCJMCU-1118資料IMP NOTICE for REF DESIGNS.pdfMSP430-ADS1118PCBPrecision Thermocouple Measurement with the ADS1118.pdfSCH and BOMTemperature Sensing.pdf使用ADS1118進行精密熱電偶測量.pdf模數轉換術語詞匯表.pdf高速數據轉換.pdf
上傳時間: 2021-11-03
上傳用戶:zhaiyawei
General Design Specification:1. AC Input Range 180-264Vac, Isolated ac-dc offline, 12LEDS,Output 700mA2. Intelligent wall dimmer detections(Leading-edge dimmer , Trailing-edgedimmer , No-dimmer)3. Multiple dimming control scheme4. Wide dimming range from 1% up to 100%5. No visible flicker6. Resonant control to achieve high efficiency7. High Power Factor, 0.9 without dimmer8. Temperature degrade control to adjust the LED9. Primary-only Sensing eliminates opto-isolator feedback and simplifies design
標簽: iw3617
上傳時間: 2021-12-03
上傳用戶:canderile
Precision, Low Noise, CMOS, Rail-to-Rail, Input/Output Operational Amplifiers Data Sheet AD8605/AD8606/AD8608The AD8605, AD8606, and AD86081 are single, dual, and quad rail-to-rail input and output, single-supply amplifiers. They feature very low offset voltage, low input voltage and current noise, and wide signal bandwidth. They use the Analog Devices, Inc. patented DigiTrim? trimming technique, which achieves
標簽: 運算放大器
上傳時間: 2022-02-02
上傳用戶:
The PW5300 is a current mode boost DC-DC converter. Its PWM circuitry with built-in 0.2? powerMOSFET make this regulator highly power efficient. The internal compensation network alsominimizes as much as 6 external component counts. The non-inverting input of error amplifierconnects to a 0.6V precision reference voltage and internal soft-start function can reduce the inrushcurrent. The PW5300 is available in the SOT23-6L package and provides space-saving PCB for theapplication fields
標簽: pw5300
上傳時間: 2022-02-11
上傳用戶:jiabin
解讀 5G 八大關鍵技術 【摘要】5G 不是一次革命,5G 是 4G 的延續,我相信 5G 在核心網部分不會有太 大的變動,5G 的關鍵技術集中在無線部分。 在進入主題之前,我覺得首先應該弄清楚一個問題:為什么需要 5G?不是因 為通信工程師們突然想改變世界,而炮制了一個 5G。是因為先有了需求,才有了 5G。什么需求? 未來的網絡將會面對:1000 倍的數據容量增長,10 到 100 倍的無線設備連接, 10 到 100 倍的用戶速率需求,10 倍長的電池續航時間需求等等。坦白的講,4G 網絡無法滿足這些需求,所以 5G 就必須登場。 但是,5G 不是一次革命。5G 是 4G 的延續,我相信 5G 在核心網部分不會有 太大的變動,5G 的關鍵技術集中在無線部分。雖然 5G 最終將采用何種技術,目前 還沒有定論。不過,綜合各大高端論壇討論的焦點,我今天收集了 8 大關鍵技術。 當然,應該遠不止這些。 1.非正交多址接入技術 (Non-Orthogonal Multiple Access,NOMA) 我們知道 3G 采用直接序列碼分多址(Direct Sequence CDMA ,DS-CDMA) 技術,手機接收端使用 Rake 接收器,由于其非正交特性,就得使用快速功率控制 (Fast transmission power control ,TPC)來解決手機和小區之間的遠-近問題。 而 4G 網絡則采用正交頻分多址(
標簽: 5G
上傳時間: 2022-02-25
上傳用戶:20125101110
5G通信系統中massive-MIMO-FBMC技術的結合概述摘要為了應對第五代移動通信(5G)中更高數據率和更低時延的需求,大規模MIMO (massive multiple-input multiple-output)技術已經被提出并被廣泛研究。大規模 MIMO技術能大幅度地提升多用戶網絡的容量。而在5G中的帶寬研究方面,特別 是針對碎片頻譜和頻譜靈活性問題,現有的正交頻分多址(Orthogonal Frequency Division Multiplexing, OFDM)技術不可能應對未來的挑戰,新的波形方案需要 被設計出來。基于此,FBMC(filter bank multicarrier)技術由于具有比OFDM低 得多的帶外頻譜泄露而被受到重視,并已被標準推進組IMT-2020列為5G物理層 的主要備選方案之一。 本文首先回顧了5G中波形設計方案(主要是FBMC調制)和大規模多天線系 統(即massive MIMO)的現有工作和主要挑戰。然后,簡要介紹了基于Massive MIMO的FBMC系統中的自均衡性質,該性質可以用于減少系統所需的子載波數 目。同時,FBMC中的盲信道跟蹤性質可以用于消除massive MIMO系統中的導頻 污染問題。盡管如此,如何將FBMC技術應用于massive MIMO系統中的誤碼率、 計算復雜度、線性需求等方面仍然不明確,未來更多的研究工作需要在massive MIMO-FBMC方面展開來。 關鍵詞:大規模MIMO;FBMC;自均衡;導頻污染;盲均衡
上傳時間: 2022-02-25
上傳用戶:
電阻-電容-電感 Altium Designer AD原理圖庫元件庫CSV text has been written to file : 0.1 - 電阻-電容-電感.csvLibrary Component Count : 35Name Description----------------------------------------------------------------------------------------------------C 貼片電容C-MLCC 獨石電容CBB CBB電容CC 瓷片電容CE 直插電解電容CE_SMD 貼片電解電容CS 直插固態電容CS_SMD 貼片固態電容CT 貼片鉭電容CX 安規X電容CY 安規Y電容L 小功率貼片電感L-AL 色環電感L-CDRH 功率屏蔽電感L-MR 功率磁環電感L-NR NR磁膠電感L-PK 工字電感L-SMD CD系列貼片線繞功率電感L-UU 共模電感PTR902 雙聯電位器帶開關R 貼片電阻R SIP9 9腳直插排阻R-8P4R 貼片排阻R-I 電流檢測電阻R-Precision 精密貼片電阻R-S 色環電阻RG 光敏電阻RK0971221 雙聯電位器帶開關RP 單聯電位器RP-SMD 貼片電位器RP-WH148 雙聯電位器RT 熱敏電阻R_MPR 5W無感水泥電阻R_VSR 壓敏電阻TMR 隧道磁電阻
標簽: 電阻元件 altium designer
上傳時間: 2022-03-13
上傳用戶:
在半導體制冷技術的工作性能及其優缺點研究的基礎上,設計了以單片機為核心控制元件,以TEC1-12706為執行元件的半導體制冷溫度控制系統。采用高精度分段式PID控制算法配合PWM輸出控制的方法實現溫度控制;選擇數字傳感器DS18B20為溫度檢測元件,還包含1602液晶顯示模塊、按鍵調整輸入模塊和H橋驅動模塊等。實際測試表明,該系統結構簡單易行,操作方便,工作性能優良,同時針對該系統專門設計的溫控算法,使半導體制冷器能更好地適應不同工況而充分發揮其制冷制熱工作特性。Based on the study of the performance and advantages and disadvantages of thermoelectric cooler(TEC)technology,a thermoelectric cooling temperature control system with single-chip microcomputer as the core control element and TEC1-12706 as the executive element was designed. High precision piecewise PID control algorithm combined with PWM output control method is adopted to realize temperature control. The digital sensor DS18B20 is selected as the temperature detection element. It also includes 1602 LCD module,key adjustment input module and H bridge drive module. The actual test shows that the system has simple structure,convenient operation and excellent performance. Meanwhile,the temperature control algorithm specially designed for the system can make the semiconductor cooler better adapt to different working conditions and give full play to its refrigeration and heating characteristics.
上傳時間: 2022-03-27
上傳用戶: