All-digital RF multi-band transmitters for advanced communications systems

适用于高级通信系统的全数字射频多频段发射机

• 批准号: 350324-2007
• 负责人: Ghannouchi, Fadhel
• 金额: $ 7.18万
• 依托单位: University of Calgary
• 依托单位国家: 加拿大
• 项目类别: Strategic Projects - Group
• 财政年份: 2007
• 资助国家: 加拿大
• 起止时间: 2007-01-01 至 2008-12-31
• 项目状态: 已结题
• 来源: https://www.nserc-crsng.gc.ca/ase-oro/Details-Detailles_eng.asp?id=361207
• 关键词: digital; RF; multi; band; transmitters

Advanced wireless communication systems need to have multi-standard multi-band capabilities to be more ubiquitous, mobile, agile and secure than they are today. This requires the development of software defined radio transceivers. So far, extensive research activities have been carried out to design the RP front-end of such multi-band tranceivers. This preliminary focused on the receiver design. Conversely, the transmitter side still a the early research and development stages. This research proposal aims at developing innovative all-digital RF multi-band transmitters for advanced communication systems using the latest semi-conductor devices technology. The targeted architecture is based on switching-mode RF power amplifiers that makes it possible to attain extremely high power efficiency levels.The main objective of the proposed research project is to extend the digital and digital-like signals from baseband all the way up to the transmit antenna, the entire adaptability and reconfigurability of this approach will be exploited to extend multi-band operation from the established receiver side to the transmitter side. The research activities will cover (i) the development of device an system models for transistors and power amplifiers operating in switching-mode; (ii) the design and optimization of GaN based switching mode power amplifiers operating in class D, E, F and their subclasses and at frequencies ranging from L to X bands; (iii) the study and evaluation of system architectures suitable for all-digital multi-band transmitters; (iv) the design and fast prototyping of dual-band transmitters operating in L and S bands.This strategic research project is sponsored by leading Canadian companies in high performance RF and microwave multi-functional sub-systems (Nanowave Technologies), and in wireless communication systems (Nortel Networks), and a worldwide leader in GaN based semi-conductor devices (Nitronex Corporation).

先进的无线通信系统需要具有多标准多频带能力，以比现在更普遍、更移动的、更敏捷和更安全。这就需要开发软件定义的无线电收发器。到目前为止，已经进行了广泛的研究活动，以设计这样的多频带收发器的RP前端。本文主要介绍了接收机的设计。相反，发射机方面仍处于早期研发阶段.本研究计划旨在采用最新的半导体器件技术，为先进的通信系统开发创新的全数字RF多频段发射机。目标架构基于开关模式RF功率放大器，可以实现极高的功率效率水平。拟议研究项目的主要目标是将数字和类数字信号从基带一直延伸到发射天线，这种方法的整体适应性和可重构性将被利用来扩展多个，从已建立的接收机侧到发射机侧的频带操作。研究范围包括：（i）开发开关模式晶体管和功率放大器的器件和系统模型;（ii）设计和优化D、E、F类及其子类以及L至X波段的GaN基开关模式功率放大器;（iii）研究和评估适用于全数字多波段发射机的系统架构;（iv）研究和评估适用于全数字多波段发射机的系统架构。这项策略性研究计划由加拿大高性能射频及微波多功能子系统（Nanowave Technologies）、无线通信系统（Nortel Networks）及氮化镓半导体器件（Nitronex Corporation）的领导者赞助。