Today wireless is becoming the leader in communication choices among users. It is not anymore a backup solution for nomadic travellers but really a newmoodnaturallyusedeverywhereevenwhenthewiredcommunicationsare possible. Many technologies evolve then continuously, changing the telecom- munication world. We talk about wireless local area networks (WLANs), wire- less personal area networks (WPANs), wireless metropolitan area networks (WMANs), wireless wide area networks (WWANs), mobile ad hoc networks (MANETs), wireless sensor networks (WSNs) and mesh networks. Since we can find today a multitude of wireless technologies we decided to group a numberofcomplementarytechnologiesintoonedocumenttomakeiteasierfor areadertounderstandsomeofthetechnicaldetailsofeachmedia.
标签： TM Bluetooth Zigbee Wi-Fi WiMax and
上传时间： 2020-06-01
上传用户：shancjb
This paper reviews key factors to practical ESD protection design for RF and analog/mixed-signal (AMS) ICs, including general challenges emerging, ESD-RFIC interactions, RF ESD design optimization and prediction, RF ESD design characterization, ESD-RFIC co-design technique, etc. Practical design examples are discussed. It means to provide a systematic and practical design flow for whole-chip ESD protection design optimization and prediction for RF/AMS ICs to ensure 1 st Si design success.
标签： ESD_protection_for_RF_and_AMS_ICs
上传时间： 2020-06-05
上传用户：shancjb
Micro-Electro-Mechanical Systems (MEMS) are miniature systems composed ofintegratedelectricalandmechanicalpartstosenseand/orcontrolthingsonaµmscale. The concept of MEMS is attributed to Richard Feynman’s famous talk on December 29th, 1959 [2,3]. Dr. Feynman foresaw many aspects of future MEMS development with his insight in microphysics. In particular, material properties in the µm scale are differentfrombulkpropertiesandthescalingdownofintegratedcircuits(IC)fabrication technology has been a major driving force of MEMS development.
标签： Performance High MEMS RF
上传时间： 2020-06-06
上传用户：shancjb
Over many years, RF-MEMS have been a hot topic in research at the technology and device level. In particular, various kinds of mechanical Si-MEMS resonators and piezoelectric BAW (bulk acoustic wave) resonators have been developed. The BAW technology has made its way to commercial products for passive RF filters, in particular for duplexers in RF transceiver front ends for cellular communica- tions. Beyond their use in filters, micromachined resonators can also be used in conjunction with active devices in innovative circuits and architectures.
标签： MEMS-based Circuits Systems and
上传时间： 2020-06-06
上传用户：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.
标签： GaN-on-Si Displace and SiC Si
上传时间： 2020-06-07
上传用户：shancjb
To a quantum mechanic the whole universe is one godawful big interacting wavefunction ? but to the rest of us, it’s a world full of separate and distinguishable objects that hurt us when we kick them. At a few months of age, human children recognize objects, expect them to be permanent and move continuously, and display surprise when they aren’t or don’t. We associate visual, tactile, and in some cases audible and olfactory sensations with identifiable physical things. We’re hardwired to understand our environment as being composed of separable things with specific properties and locations. We understand the world in terms of what was where when.
上传时间： 2020-06-08
上传用户：shancjb
I wrote this book so that students, hobbyists, and engineers alike can take advantage of the Arduino platform by creating several projects that will teach them about the engineering process. I also wanted to guide the reader through introductory projects so that they could get a firm grasp on the Arduino Language, and how to incorporate several pieces of hardware to make their own projects. This book offers so much information on the Arduino, not just the basic LED projects but it offers different peripherals such as Ultrasonic sensor, the Xbox® controller, Bluetooth, and much more. This book also teaches the non-engineer to follow a process that will help them in future project (not just Arduino projects).
标签： Engineering Practical Arduino
上传时间： 2020-06-09
上传用户：shancjb
毕业论文-基于Arduino的温度测试系统设计摘要在物质文化水平逐渐提高的社会背景下，智能家居逐渐兴起，现如今已经具有一定的规模。基于arduino的数据采集端以及基于Android的数据接收终端是本文的研究对象，全文设计了智能家居的一个子系统——温度测试系统。该基于arduino的温度测试系统主要涉及了以下几个领域：Android 平台的软件开发、Arduino 平台的软硬件构成、蓝牙通信的简单应用、温度数据采集实际操作。该系统主要由Arduino UNO主控板、Arduino Xbee V5 传感器扩展板、DS18B20 数字温度传感器、Bluetooth V3蓝牙通信模块、Android终端机构成。以蓝牙作为媒介，通过Arduino组件和 Android组件的连接，完成了从传感器收集数据传输到终端机的过程。本课题设计温度测试系统，操作简单，界面简洁，测试结果观测很直接，整个系统运行稳定流畅。本温度测试系统也可用于其他很多行业，应用范围很广泛，非常值得进一步开发与升级。关键词 智能家居；Arduino；Android；温度测试
上传时间： 2021-10-16
上传用户：jason_vip1
使用片式磁珠和片式电感的原因：是使用片式磁珠还是片式电感主;要还在于应用。在谐振电路中需要使用片式电感。而需要消除不需要的EMI噪声时，使用片式磁珠是最佳的选择。 磁珠是用来吸收超高频信号，象-一些RF电路，PLL，振荡电路，含超高频存储器电路（DDRSDRAM，RAMBUS等）都需要在电源输入部分加磁珠。而电感是一种蓄能元件，用在LC振荡电路，中低频的滤波电路等，其应用频率范围很少超过错50MHZ。 磁珠专用于抑制信号线、电源线上的高频噪声和尖峰干扰，还具有吸收静电脉冲的能力。磁珠的功能主要是消除存在于传输线结构（PCB电路）中的RF噪声，RF能量是叠加在直流传输电平上的交流正弦波成分，直流成分是需要的有用信号，而射频RF能量却是无用的电磁干扰沿着线路传输和辐射（EMI）。要消除这些不需要的信号能量，使用片式磁珠扮演高频电阻的角色（衰减器），该器件允许直流信号通过，而滤除交流信号。通常高频信号为30MHz以上，然而，低频信号也会受到片式磁珠的影响
标签： pcb
上传时间： 2021-11-06
上传用户：xsr1983
Bluetooth Qualification Program Reference Document（PRD）是Bluetooth Qualification Program的主要参考文件，定义了其要求、功能和策略。蓝牙网站上提供PRD。通过蓝牙认证过程证明了一种措施因为产品没有经过测试本蓝牙规范的每一个方面，都不能保证合格顺从。通过蓝牙认证过程只满足一个条件许可证授予的条件。成员的最终责任是确保合格产品符合此蓝牙规范，并与其他产品互操作。
标签： 蓝牙协议栈
上传时间： 2021-11-16
上传用户：ttalli
