通信元器件

MC33897：汽车电子网络单线CAN收发器，SI4700：FM广播无线电调谐器系列，Dolphin：跳频无线UART芯片组，PRO／Wireless5116：新型WiMAX硅解决方案，TDA7701：微型单片FM调谐器。     

TDA9965工作原理及其在TDI-CCD相机电路中的应用

TDA9965是PHILIPS公司专门为CCD相机设计的一款12位模/数转换芯片。在此分析了TDA9965的结构和工作原理,选用FPGA器件作为硬件设计载体,使用VHDL语言以QuarterⅡ作为平台对TDA9965的初始化设置和驱动时序发生器进行了硬件描述及仿真和配置。最后分析了TDA9965的硬件PCB设计。系统采用FPGA配置TDA9965作为某款国产TDI-CCD成像系统的视频处理部分,在实验中成功地完成了模拟视频信号的数字化处理。     

QuickLogic联合Viosoft发布Linux开发包

飞兆半导体公司（Fairchild Semiconductor）的RMPA5255 WLAN RF功率放大器已获Broadcom选用于其新近的单芯片PCI Express使能的Wi—Fi参考设计中。它获选的原因在于飞兆半导体能够优化其产品，以满足Broadcom对尺寸、成本和性能方面的要求。RMPA5255能为无线使能系统提供多种优势，包括：     

集成了3．125Gbps收发器的Stratix GX器件的应用

Stratix GX器件在业界领先的Stratix GX体系中集成了3.125Gbsp收发器技术,为高速收发器实现提供了全面的解决方案。Altera采用MercuryTM器件系列成为第一家在FPGA中嵌入高速收发器的FPGA公司,设计了Stratix GX器件为数Gbit收发器方案提供真正的低风险设计方式。     

TDA18250A／18260A：硅调谐器

恩智浦半导体公司推出了TDA18250A和TDA18260A,是涵盖全球数字有线标准的高性能有线机顶盒（STB）单路和双路硅调谐器。TDA18250A和TDA18260A是提供零功率环路输出的硅调谐器,使机顶盒厂商得以遵循2013年新的欧盟生态设计指令规范,即基本型机顶盒的待机功耗必须低于0．5W。     

功率因数控制器TDA4817及其应用

功率因数控制器TDA4817是西门子公司继TDA4814、TDA4816之后生产的经济型单片IC,功能与美国的 MC34261和SG3561A相当。TDA4817为设计一个有源功率因数校正(PFC)电路提供一切所必需的功能。用它作为有源谐波滤波器控制电子慎流器的前置变换器或开关电源(SMPS),可使功率因数达到几乎等于1的水平。 TDA4817采用 P-DIP-8型双列直插式塑料封装,顶视图如图1所示。其各引脚功能见附表所列。     

一种0.18μm的高速USB2.0收发器

文中针对USB 2.0规范设计了一种高速收发器.在480Mb/s数据速率的高速模式下,在常规收发器的基础上作了改进,并为包络检波器设计了新颖的采样比较电路.该收发器基于SMIC 0.18μn 1P6M 3.3V/1.8VCMOS混合信号工艺设计,HSPICE仿真结果表明:该收发器能够在480Mb/s的数据速率下按USB2.0规范要求发送和接收数据.     

用于汽车网络的LIN和CAN收发器及其EMI／ESD保护器件

安森美半导体推出局域互联网(LIN）收发器、控制器区域网(CAN)收发器和用于LIN／CAN收发器的。EMI／ESD保护电路。NCV7380、NCV7382和NC：V7361 LIN收发器以及NCV7356单线CAN收发器的设计符合行业标准，提供ESD性能。     

基于RocketIO的SATA物理层实现

以Virtex-5 系列 FPGA 内嵌的 RocketIO 收发器模块为平台,分析 SATA（串行高级技术附件）协议的物理层功能,把 RocketIO 收发器的内部结构特点与协议要求相结合,设计基于 RocketIO收发器的 SATA 物理层电路。     

622 Mbit/s大气激光通信机与10/100 Mb·s-1自适应收发器的设计及集成

研制了一款用于622 Mbit/s大气激光通信机的10/100 Mb*s-1自适应以太网光纤收发器并将其集成到通信终端机模块中.该收发器以高性能的光电介质转换芯片ML6652为核心,配以必要的光收发模块和网络接口等外围器件,实现了以太网光电转换设计.从收发器主要元器件的选择、系统设计和印刷电路板设计电磁屏蔽几个方面介绍了光纤收发器的设计.整个系统具有速率高、耗能小、结构紧凑、人眼安全的特点.     

基于nRF24E1与网络、火线的教室照明射频遥控设计

目前多媒体教室照明如何实现远程控制,是值得进一步研究的课题。阐述了射频收发芯片nRF24E1的基本特性,并以nRF24E1为主体实现了符合IEEE 802.3af标准的基于网络受电设备射频收发遥控主机,符合电工安全规范的基于火线单线制射频收发遥控从机。分析了射频遥控收发非标准协议数据通信和软件设计流程,并论述了该系统在实际应用中的优势。     

一种基于OFDM的新型低功耗RF收发器设计

为实现低功耗信号传输,提出一种基于OFDM的IEEE 802.15.4g低功耗无线电频率（RF）收发器。该新型RF收发器电路由Tx BBA（基带模拟）、片上RF开关前端、Rx BBA及锁相环（PLL）构成,采用0.18?m CMOS技术制作,满足了IEEE 802.15.4g OFDM系统低功耗信号传输的需要。实际测试结果显示,相比传统的RF收发器,提出的RF收发器具有较低的功耗和良好的灵敏度,当电源电压为1.8 V时,Tx模式下会消耗14.7mA,Rx模式下会消耗15.7mA。     

LTE 毫微微蜂窝基站射频收发器的设计与实现*

针对近年来LTE 毫微微蜂窝基站商用加快和规模扩大,减小LTE 毫微微蜂窝基站的尺寸和降低其成 本就变得越来越重要。在保证基站性能的基础上,如何设计无线电收发器以减少尺寸和成本成为很大的挑战。设 计了一种应用于LTE 毫微微蜂窝基站中的低成本MIMO 射频收发器。分析了发射机和接收机的各项需求指标,提 出了块级的射频参数。据此,射频收发器被系统地分为几个子模块,分别设计了这些不同的子模块,同时区分各个 子模块的特点。所得到的测定结果表明,充分集成的射频收发器的设计不仅具有小尺寸,也符合LTE 毫微微基站的 各项指标。     

涡旋电磁波轨道角动量模态抗干扰性能分析

The electromagnetic vortex wave has demonstrated excellent research value with potential applications in the fields of wireless communication and radar detection and imaging due to its unusual electromagnetic field distribution and theoretically infinite orthogonal Orbital Angular Momentum (OAM) modes. This study analyzes the anti-interference performance of OAM modes in the electromagnetic vortex Radio Frequency (RF) transceiver link primarily from the perspective of the electromagnetic vortex field distributions in space and the OAM modes orthogonality. Planar antenna arrays are designed to generate the electromagnetic vortex beams with respective OAM modes of and in the C band, and the corresponding RF transceiver links are established. The OAM modes’ anti-interference properties under different interference situations are analyzed in the electromagnetic vortex RF transceiver link by using a horn antenna as the interference source. Meanwhile, the corresponding OAM mode spectrum and the OAM modes’ orthogonality are employed as the primary methods in our analysis. Finally, the designed antenna models are fabricated, and the electromagnetic vortex RF transceiver links are measured. The corresponding analyses and conclusions are presented in this study. The OAM modes’ anti-interference performance analysis in the vortex electromagnetic wave’s RF transceiver link can provide a reference for exploring and designing a vortex electromagnetic wave in wireless communication and radar detection and imaging research.      

A New Automatic Compensation Network for System‐on‐Chip Transceivers

This paper proposes a new automatic compensation network (ACN) for a system‐on‐chip (SoC) transceiver. We built a 5 GHz low noise amplifier (LNA) with an on‐chip ACN using 0.18 µm SiGe technology. This network is extremely useful for today's radio frequency (RF) integrated circuit devices in a complete RF transceiver environment. The network comprises an RF design‐for‐testability (DFT) circuit, capacitor mirror banks, and a digital signal processor. The RF DFT circuit consists of a test amplifier and RF peak detectors. The RF DFT circuit helps the network to provide DC output voltages, which makes the compensation network automatic. The proposed technique utilizes output DC voltage measurements and these measured values are translated into the LNA specifications such as input impedance, gain, and noise figure using the developed mathematical equations. The ACN automatically adjusts the performance of the 5 GHz LNA with the processor in the SoC transceiver when the LNA goes out of the normal range of operation. The ACN compensates abnormal operation due to unusual thermal variation or unusual process variation. The ACN is simple, inexpensive and suitable for a complete RF transceiver environment.     

Low‐Power Direct Conversion Transceiver for 915 MHz Band IEEE 802.15.4b Standard Based on 0.18 μm CMOS Technology

This paper presents the experimental results of a low‐power low‐cost RF transceiver for the 915 MHz band IEEE 802.15.4b standard. Low power and low cost are achieved by optimizing the transceiver architecture and circuit design techniques. The proposed transceiver shares the analog baseband section for both receive and transmit modes to reduce the silicon area. The RF transceiver consumes 11.2 mA in receive mode and 22.5 mA in transmit mode under a supply voltage of 1.8 V, in which 5 mA of quadrature voltage controlled oscillator is included. The proposed transceiver is implemented in a 0.18 μm CMOS process and occupies 10 mm² of silicon area.     

Low-power/low-voltage RF microsystems for wireless sensors networks

This paper presents radio-frequency (RF) microsystems (MSTs) composed by low-power devices for use in wireless sensors networks (WSNs). The RF CMOS transceiver is the main electronic system and its power consumption is a critical issue. Two RF CMOS transceivers with low-power and low-voltage supply were fabricated to operate in the 2.4 and 5.7 GHz ISM bands. The measurements made in the RF CMOS transceiver at 2.4 GHz, which showed a sensitivity of −60 dBm with a power consumption of 6.3 mW from 1.8 V supply. The measurements also showed that the transmitter delivers an output power of 0 dBm with a power consumption of 11.2 mW. The RF CMOS transceiver at 5.7 GHz has a total power consumption of 23 mW. The target application of these RF CMOS transceivers is for MSTs integration and for use as low-power nodes in WSNs to work during large periods of time without human operation, management and maintenance. These RF CMOS transceivers are also suitable for integration in thermoelectric energy scavenging MSTs.     

A low voltage CMOS RF front-end for IEEE 802.11b WLAN transceiver

A low voltage CMOS RF front-end for IEEE 802.11b WLAN transceiver is presented. The problems to implement the low voltage design and the on-chip input/output impedance matching are considered, and some improved circuits are presented to overcome the problems. Especially, a single-end input, differential output double balanced mixer with an on-chip bias loop is analyzed in detail to show its advantages over other mixers. The transceiver RF front-end has been implemented in 0.18 um CMOS process, the measured results show that the Rx front-end achieves 5.23 dB noise figure, 12.7 dB power gain (50 ohm load), −18 dBm input 1 dB compression point (ICP) and −7 dBm IIP3, and the Tx front-end could output +2.1 dBm power into 50 ohm load with 23.8 dB power gain. The transceiver RF front-end draws 13.6 mA current from a supply voltage of 1.8 V in receive mode and 27.6 mA current in transmit mode. The transceiver RF front-end could satisfy the performance requirements of IEEE802.11b WLAN standard. Supported by the National Natural Science Foundation of China, No. 90407006 and No. 60475018.     

UTRA/FDD RF Transceiver Requirements

Unified RF requirements are derived for an UMTS Terrestrial RadioAccess/Frequency Division Duplex (UTRA/FDD) compliant mobile transceiver. Aset of transceiver requirements are proposed with consideration to systemissues including duplex aspects. From these design-compatible requirements areproposed for each functional block in the transceiver.     

基于nRF905模块的AT89S单片机无线收发系统设计

介绍了挪威Nordic公司的nRF905无线收发模块的结构和工作特点,并在此基础上设计了基于nRF905模块的AT89S单片机的无线通信系统。给出了无线收发系统的硬件组成电路和数据收发流程图,并通过实际数据通信实验验证了系统的可靠性。最后还对本系统的应用作了进一步的说明。