The idea for this book was born during one of my project-related trips to the beautiful city of Hangzhou in China, where in the role of Chief Architect I had to guide a team of very young, very smart and extremely dedicated software developers and verification engineers. Soon it became clear that as eager as the team was to jump into the coding, it did not have any experience in system architecture and design and if I did not want to spend all my time in constant travel between San Francisco and Hangzhou, the only option was to groom a number of local junior architects. Logically, one of the first questions being asked by these carefully Selected future architects was whether I could recommend a book or other learning material that could speed up the learning cycle. I could not. Of course, there were many books on various related topics, but many of them were too old and most of the updated information was either somewhere on the Internet dispersed between many sites and online magazines, or buried in my brain along with many years of experience of system architecture.
標簽： Telecommunication Gateways System Design for
上傳時間： 2020-06-01
上傳用戶：shancjb
Digital radios have undergone an astonishing evolution in the last century. Born as a set of simple and power-hungry electrical and electromechanical devices for low data rate transmission of telegraph data in the Marconi age, they have transformed, thanks to substantial advances in electronic technology, into a set of small, reliable and sophisticated integrated devices supporting broadband multimedia communications. This, however, would not have been possible unless significant progress had been made in recent decades in the field of signal processing algorithms for baseband and passband signals. In fact, the core of any modern digital radio consists of a set of algorithms running over programmable electronic hardware. This book stems from the research and teaching activities of its co-authors in the field of algorithmic techniques for wireless communications. A huge body of technical literature has accumulated in the last four decades in this area, and an extensive coverage of all its important aspects in a single textbook is impossible. For this reason, we have Selected a few important topics and, for ease of reading, organized them into two parts.
標簽： Communications Algorithmic Techniques Wireless
上傳時間： 2020-06-01
上傳用戶：shancjb
GaN is an already well implanted semiconductor technology, widely diffused in the LED optoelectronics industry. For about 10 years, GaN devices have also been developed for RF wireless applications where they can replace Silicon transistors in some Selected systems. That incursion in the RF field has open the door to the power switching capability in the lower frequency range and thus to the power electronic applications. Compared to Silicon, GaN exhibits largely better figures for most of the key specifications: Electric field, energy gap, electron mobility and melting point. Intrinsically, GaN could offer better performance than Silicon in terms of: breakdown voltage, switching frequency and Overall systems efficiency.
標簽： GaN-on-Si Displace and SiC Si
上傳時間： 2020-06-07
上傳用戶：shancjb
I am presenting this novel book on advances and trends in power electronics and motor drives to the professional community with the expectation that it will be given the same wide and enthusiastic acceptance by practicing engineers, R&D professionals, univer- sity professors, and even graduate students that my other books in this area have. Unlike the traditional books available in the area of power electronics, this book has a unique presentation format that makes it convenient for group presentations that use Microsoft’s PowerPoint software. In fact, a disk is included that has a PowerPoint file on it that is ready for presentation with the core figures. Presentations can also be organized using just Selected portions of the book
標簽： Electronics Advances Drives Power Motor And
上傳時間： 2020-06-10
上傳用戶：shancjb
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：
該文件是器件官方元件封裝的文件，用cadence，打開后綴為bxl的文件。 下載的Ultra Librarian 軟件； Ultra Librarian提供了一個基于云的庫，該庫中有超過 8 百萬種符號、封裝，以及帶有供貨商 ECAD 中性數據輸出選擇的 3D 模型。該庫以業內最大的 ECAD 元器件庫為后盾，代表了 400 多家制造商。輕松找到您所需的零件，導出至 22 種不同的 CAD 工具。該庫每天更新，為您提供滿足 PCB 設計需求的最準確零件。 打開 Ultra Librarian軟件，導入bxl后綴文件，選擇需要轉換的文件類型，最后導出文件。 然后就可以用cadence或者AD打開該庫。該文件生成edf和cfg文件。 再用orcad capture cis軟件打開，file>import design >edif> open(edf) configation(cfg)然后就可以生成dns工程，就會在目標路徑下產生olb和obk文件，是原理圖文件，可以用orcad capture cis軟件打開。 附加導入Altium Designer：首先，按照所給鏈接下載ULib文件，解壓，并將解壓后的文件安裝。打開桌面上的Ultra應用程序。打開后彈出一個對話框，選擇繼續免費使用。然后彈出主程序窗口，在步驟一里面加載我們需要轉換的BXL文件。并且在下面選擇Altium designer，。選擇步驟三的export to Selected tools ，并生成一個log.txt文件。用AD打開剛生成的UL_Import.PrjScr文件，。打開工程文件后，并將鼠標光標移動到UL_Import.Pas文件下且選中。點擊箭頭所指運行按鈕。在彈出的對話框UL Import下，選擇剛生成的LOG.txt文件。最后點擊輸出start import按鈕，即可把bxl庫文件轉換為AD封裝庫文件。生成的庫文件。
上傳時間： 2022-06-01
上傳用戶：xsr1983
Spartane-6 LXand LXT FPGAs are available in various speed grades, with -3 having the highest performance. The DC and AC electrical parameters of the Automotive XA Spartan-6 FPGAs and Defense-grade Spartan-6Q FPGAs devices are equivalent to the commercial specifications except where noted. The timing characteristics of the commercial(XC)-2 speed grade industrial device are the same as for a-2 speed grade commercial device. The -2Q and -3Q speed grades are exclusively for the expanded(Q) temperature range. The timing characteristics are equivalent to those shown for the-2 and-3speed grades for the Automotive and Defense-grade devices.Spartan-6 FPGA DC and AC characteristics are specified for commercial (C), industrial (), and expanded (Q) temperature ranges. Only Selected speed grades and/or devices might be available in the industrial or expanded temperature ranges for Automotive and Defense-grade devices.
上傳時間： 2022-06-19
上傳用戶：
