The first edition of this book was published in 1992. Nine years later it had become clear that a second edition was required because of the rapidly changing nature of telecommunication. In 1992, the Internet was in existence but it was not the household word that it is in the year 2001. Cellular telephones were also in use but they had not yet achieved the popularity that they enjoy today. In the current edition, Chapter 1 has been revised to include a Section on the Internet. Chapter 10 is new and it covers the facsimile machine; I had overlooked this important tele- communication device in the first edition. Chapter 11 is also new and it describes the pager, the cordless telephone and the cellular telephone system. These are examples of a growing trend in telecommunications to go ‘‘wireless’’.
標簽： Telecommunication Circuit Design 2nd
上傳時間： 2020-06-01
上傳用戶：shancjb
n the first part of this book, we give an introduction to the basic applications of wireless com- munications, as well as the technical problems inherent in this communication paradigm. After a brief history of wireless, Chapter 1 describes the different types of wireless services, and works out their fundamental differences. The subsequent Section 1.3 looks at the same problem from a different angle: what data rates, ranges, etc., occur in practical systems, and especially, what combination of performance measures are demanded (e.g., what data rates need to be transmitted over short distances; what data rates are required over long distances?) Chapter 2 then describes the technical challenges of communicating without wires, putting special emphasis on fading and co-channel interference. Chapter 3 describes the most elementary problem of designing a wireless system, namely to set up a link budget in either a noise-limited or an interference-limited system. After studying this part of the book, the reader should have an overview of different types of wireless services, and understand the technical challenges involved in each of them. The solutions to those challenges are described in the later parts of this book.
標簽： Communications Wireless Edition 2nd
上傳時間： 2020-06-01
上傳用戶：shancjb
This chapter provides extensive coverage of existing mobile wireless technologies. Much of the emphasis is on the highly anticipated 3G cellular networks and widely deployed wireless local area networks (LANs), as the next-generation smart phones are likely to offer at least these two types of connectivity. Other wireless technologies that either have already been commercialized or are undergoing active research and standardization are introduced as well. Because standardization plays a crucial role in developing a new technology and a market, throughout the discussion standards organizations and industry forums or consortiums of some technologies are introduced. In addition, the last Section of this chapter presents a list of standards in the wireless arena.
標簽： Networking Wireless Complete
上傳時間： 2020-06-01
上傳用戶：shancjb
In the present era, low observability is one of the critical requirements in aerospace sector, especially related to defense. The stealth technology essentially relates to shaping and usage of radar absorbing materials (RAM) or radar absorbing struc- tures (RAS). The performance of such radar cross Section (RCS) reduction tech- niques is limited by the bandwidth constraints, payload requirements, and other structural issues. Moreover, with advancement of materials science, the structure geometry no longer remains key decisive factor toward stealth.
標簽： Fundamentals Design Radar of EM
上傳時間： 2020-06-06
上傳用戶：shancjb
Under the Energy Independence and Security Act of 2007 (EISA), the National Institute of Standards and Technology (NIST) was assigned “primary responsibility to coordinate development of a framework that includes protocols and model standards for information management to achieve interoperability of Smart Grid devices and systems…” [EISA Section 1305]. 35 This responsibility comes at a time when the electric power grid and electric power industry are undergoing the most dramatic transformation in many decades. Very significant investments are being made by industry and the federal government to modernize the power grid. To realize the full benefits of these investments—and the continued investments forecast for the coming decades—there is a continued need to establish effective smart grid 36 standards and protocols for interoperability.
標簽： Framework Roadmap NIST and
上傳時間： 2020-06-07
上傳用戶：shancjb
This Section covers the design of power transformers used in buck-derived topologies: forward converter, bridge, half-bridge, and full-wave centertap. Flyback transformers (actually coupled inductors) are covered in a later Section. For more specialized applications, the principles discussed herein will generally apply.
上傳時間： 2021-12-16
上傳用戶：fliang
CHAPTER 1: THE OP AMP CHAPTER 2: OTHER LINEAR CIRCUITS CHAPTER 3: SENSORS CHAPTER 4: RF/IF CIRCUITS CHAPTER 5: FUNDAMENTALS OF SAMPLED DATA SYSTEMS CHAPTER 6: CONVERTERS CHAPTER 7: DATA CONVERTER SUPPORT CIRCUITS CHAPTER 8: ANALOG FILTERS CHAPTER 9: POWER MANAGEMENT CHAPTER 10: PASSIVE COMPONENTS CHAPTER 11: OVERVOLTAGE EFFECTS ON ANALOG INTEGRATED CIRCUITS CHAPTER 12: PRINTED CIRCUIT BOARD (PCB) DESIGN ISSUES CHAPTER 13: DESIGN DEVELOPMENT TOOLS
上傳時間： 2021-12-21
上傳用戶：wangshoupeng199
CPCI_E標準規范 CompactPCI? Express SpecificationThe documents in this Section may be useful for reference when reading the specification. The revision listed for each document is the latest revision at the time this specification was published. Newer revisions of these documents may exist, so refer to the newest revision. Many of these documents are referenced throughout this specification. Refer to the newest revision of the document unless a specific revision is referenced. ? PCI Express Base Specification 3.0. PCI Special Interest Group (PCI-SIG). ? PCI Express Card Electromechanical (CEM) Specification 3.0. PCI Special Interest Group (PCI-SIG). ? PCI Express to PCI/PCI-X Bridge Specification, Rev. 1.0. PCI Special Interest Group (PCI-SIG). ? PCI Express Jitter White Paper. PCI Special Interest Group (PCI-SIG). ? PCIe Rj Dj BER White Paper. PCI Special Interest Group (PCI-SIG). ? PHY Electrical Test Specification for PCI Express Architecture. PCI Special Interest Group (PCI SIG). ? System Management Bus (SMBus) Specification, Version 2.0. Smart Battery System Implementer’
標簽： CPCIE
上傳時間： 2022-02-23
上傳用戶：
本手冊介紹了 32 位基于 ARM 微控制器 STM32F101xx 與 STM32F103xx 的固件函數庫。該函數庫是一個固件函數包，它由程序、數據結構和宏組成，包括了微控制器所有外設的性能特征。該函數庫還包括每一個外設的驅動描述和應用實例。通過使用本固件函數庫，無需深入掌握細節，用戶也可以輕松應用每一個外設。因此，使用本固態函數庫可以大大減少用戶的程序編寫時間，進而降低開發成本。每個外設驅動都由一組函數組成，這組函數覆蓋了該外設所有功能。每個器件的開發都由一個通用 API(application programming interface 應用編程界面)驅動， API 對該驅動程序的結構，函數和參數名稱都進行了標準化。 所有的驅動源代碼都符合“Strict ANSI-C”標準（項目于范例文件符合擴充 ANSI-C 標準）。我們已經把驅動源代碼文檔化，他們同時兼容 MISRA-C 2004 標準（根據需要，我們可以提供兼容矩陣）。由于整個固態函數庫按照“Strict ANSI-C”標準編寫，它不受不同開發環境的影響。僅對話啟動文件取決于開發環境。該固態函數庫通過校驗所有庫函數的輸入值來實現實時錯誤檢測。該動態校驗提高了軟件的魯棒性。實時檢測適合于用戶應用程序的開發和調試。但這會增加了成本，可以在最終應用程序代碼中移去，以優化代碼大小和執行速度。想要了解更多細節，請參閱 Section 2.5。 因為該固件庫是通用的，并且包括了所有外設的功能，所以應用程序代碼的大小和執行速度可能不是最優的。對大多數應用程序來說，用戶可以直接使用之，對于那些在代碼大小和執行速度方面有嚴格要求的應用程序，該固件庫驅動程序可以作為如何設置外設的一份參考資料，根據實際需求對其進行調整。
上傳時間： 2022-04-17
上傳用戶：
In this presentation, we will look at what the Serial Peripheral Interface, otherwise known as the SPI, is. and how it is used to communicate data to and from the PICmicro microcontroller.SPl is frequently used when few 1/O lines are available, but communication between two or more devices must be fast and easy to implement.In this presentation, we will discuss the following topics: We will first cover an Overview of SPI This Section of the tutorial will introduce you to SPI and its concepts.Next, we will examine the use of SPI on the PICmicro MCU.The details of how SPI is implemented on a PICmicro device will be examined.Then, a Code Walkthrough will be given.The walkthough will explore code for both an SPI Master and SPI Slave. The example will have the Master generate data for sending to the slave.Finally, there will be a few resources given at the end of the presentation. These resources will allow you to explore in more detail the SPI interface
標簽： spi協議
上傳時間： 2022-06-20
上傳用戶：
