Research in High-Frequency Analog Electronic Circuits for Communication Systems

通信系统高频模拟电子电路研究

• 批准号: 9732550
• 负责人: Paul Gray
• 金额: $ 53.03万
• 依托单位: University of California-Berkeley
• 依托单位国家: 美国
• 项目类别: Continuing Grant
• 财政年份: 1998
• 资助国家: 美国
• 起止时间: 1998-05-15 至 2001-04-30
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=9732550&HistoricalAwards=false
• 关键词: Research; Frequency; Analog; Electronic; Circuits

This research is concerned with the creation of new methods of electronic circuit design which will allow realization of smaller size, longer battery life and lower cost in personal communication systems such as cellular telephones, cordless telephones and wireless computer networks. In addition, new transceiver architectures are being investigated which will allow multistandard operation which is transparent to the user. Thus, a single personal communication handset could be used anywhere in the world as it automatically adjusts to different local standards and frequencies. Current implementations of portable transceivers typically use a multi-chip, multi-technology approach with a number of precision external filters, resonators, and other components in order to meet the stringent performance requirement of the analog RF interface in such systems. These transitional approaches severely limit the achievable levels of power dissipation and form factor, and are not compatible with low- cost adaptive multistandard operation. This research is exploring new architectures and circuit techniques which will allow utilization of scaled CMOS VLSI technology to integrate the entire transceiver function with only a few external components. The challenge is to find new approaches that overcome the inherent limitations of integrated passive components such as low Q values in integrated inductors, capacitors and varactors, by utilization of the inherently high bandwidth capabilities of scaled integrated MOS transistors. The investigators expect to demonstrate at the end of this research project a single-chip multistandard RF transceiver incorporating synthesizers, transmit path, power amplifier, and receive path as well as providing interface to several different RF standards. This prototype will be implemented in 0.35 micron CMOS technology.

这项研究致力于创造新的电子电路设计方法，以便在蜂窝电话、无绳电话和无线计算机网络等个人通信系统中实现更小的尺寸、更长的电池寿命和更低的成本。此外，正在研究新的收发信机架构，它将允许对用户透明的多标准操作。因此，一部个人通信手机可以在世界任何地方使用，因为它可以自动调整到不同的当地标准和频率。为了满足此类系统中模拟RF接口的严格性能要求，便携式收发机的当前实现通常使用多芯片、多技术方法以及多个精密外部滤波器、谐振器和其他组件。这些过渡方法严重限制了可实现的功率消耗和形状因数水平，并且与低成本自适应多标准操作不兼容。这项研究正在探索新的架构和电路技术，允许利用大规模CMOSVLSI技术将整个收发器功能与仅有的几个外部元件集成在一起。挑战是找到新的方法，通过利用规模化集成MOS晶体管固有的高带宽能力，克服集成无源元件的固有限制，如集成电感、电容器和变容二极管中的低Q值。研究人员希望在该研究项目结束时展示一款集合成器、发射路径、功率放大器和接收路径于一体的单芯片多标准射频收发器，并提供多种不同射频标准的接口。该样机将采用0.35微米的cmos工艺实现。