A New Design Paradigm for Switch-Mode Power Amplifiers Supporting Concurrent Multi-Band Wireless Communication
支持并发多频段无线通信的开关模式功率放大器的新设计范式
基本信息
- 批准号:1509001
- 负责人:
- 金额:$ 30万
- 依托单位:
- 依托单位国家:美国
- 项目类别:Standard Grant
- 财政年份:2015
- 资助国家:美国
- 起止时间:2015-08-15 至 2019-07-31
- 项目状态:已结题
- 来源:
- 关键词:
项目摘要
The total number of worldwide cell phone users surpassed the 5 billion mark in 2010 and annual global sales of cellular telephones is reaching 1.8 billion units, as of 2013. With mobile technology becoming almost ubiquitous and with the types of enriched features and services that are available to the end user, mobile devices are being required to support higher data rates. Unfortunately, this need for higher data rates is resulting in systems that are now required to support communication in many different, non-contiguous frequency bands spread between 0.4 and 6 GHz. The current solution consists of using multiple, parallel, single-band power amplifiers resulting in modern cellular telephones having upwards of ten separate power amplifiers. Ultimately, this problem will result in mobile devices becoming bulkier, more expensive, and unable to support key new multi-band technologies. The root problem is that, conventionally, a single power amplifier can support only a single band. Researchers have tried to address this problem through the design of concurrent multi-band power amplifiers, but, these systems suffered significant drops in performance that were largely unexplainable using conventional design theories. This research will provide a detailed understanding of the design trade-offs in concurrent multi-band power amplifiers and a new set of design techniques. The proposed research will give radio frequency (RF) designers a new set of tools enabling them to address the challenges posed by next generation wireless system design. In addition, this project will provide methods for increasing overall power efficiency and thereby increasing battery life in multi-band systems. Moreover, this project will strengthen the U.S. transceiver industry through research, through bolstering the number of women and minorities in undergraduate and graduate STEM programs, and through supporting local industry with presentations and collaborations.Modern power amplifier design is besieged on two fronts: concurrent multi-band communication is becoming a reality and wireless devices must support a variety of different communication standards. This is leading to transmitters that must support communication over many different frequency bands spread between 0.4 and 6 GHz. The current approach of using multiple, single-band power amplifiers in parallel is becoming unsustainable and new technology is going to be required for next generation wireless devices. One promising technique is the use of concurrent multi-band power amplifiers wherein a single power cell/matching network is capable of supporting multiple, simultaneous signals. Unfortunately, there is currently no existing theoretical framework to describe the maximum efficiency, output power, stability, or linearity of concurrent multi-band power. The continued lack of such basic knowledge will fundamentally limit the potential of this new technology to address the needs of future wireless devices. This proposal will develop both a theoretical framework and a set of practical guidelines for the analysis and physical implementation of such power amplifiers. Together, these results will give RF designers a new set of tools with which they can reduce the current number of power amplifiers in modern devices, and facilitate new techniques for improving data rates and efficiency in already-designated communication bands. This, in turn, will result in a more efficient use of the available spectrum without the complicated regulatory hurdles associated with techniques such as dynamic spectrum access. The broader impact of this work lies in the ability of multi-band power amplifiers to reduce the overall cost of next generation transceivers while yielding a more flexible and robust mobile device.
2010年,全球手机用户总数超过50亿大关,截至2013年,全球手机年销售量达到18亿部。随着移动的技术变得几乎无处不在,并且随着终端用户可用的丰富的特征和服务的类型,要求移动的设备支持更高的数据速率。不幸的是,这种对更高数据速率的需求导致系统现在需要支持在0.4和6 GHz之间扩展的许多不同的非连续频带中的通信。当前的解决方案包括使用多个并行的单频带功率放大器,导致现代蜂窝电话具有超过十个单独的功率放大器。最终,这个问题将导致移动的设备变得更笨重、更昂贵,并且无法支持关键的新多频带技术。根本问题在于,传统上,单个功率放大器只能支持单个频带。研究人员试图通过设计并行多频带功率放大器来解决这个问题,但是,这些系统的性能显著下降,这在很大程度上是无法用传统的设计理论来解释的。这项研究将提供一个详细的了解,在并发多频带功率放大器的设计权衡和一套新的设计技术。拟议的研究将为射频(RF)设计人员提供一套新的工具,使他们能够应对下一代无线系统设计带来的挑战。此外,该项目还将提供提高整体功率效率的方法,从而延长多频段系统的电池寿命。 此外,该项目还将通过研究、增加本科和研究生STEM课程中女性和少数族裔的人数以及通过演示和合作支持当地产业来加强美国收发器行业。现代功率放大器设计在两个方面受到围攻:并发多频带通信正在成为现实,无线设备必须支持各种不同的通信标准。这导致发射机必须支持在0.4和6 GHz之间扩展的许多不同频带上的通信。当前并行使用多个单频带功率放大器的方法变得不可持续,并且下一代无线设备将需要新技术。一种有前景的技术是使用并发多频带功率放大器,其中单个功率单元/匹配网络能够支持多个同时的信号。不幸的是,目前没有现有的理论框架来描述并发多频带功率的最大效率、输出功率、稳定性或线性度。这种基本知识的持续缺乏将从根本上限制这种新技术满足未来无线设备需求的潜力。该建议将为此类功率放大器的分析和物理实现开发一个理论框架和一套实用指南。总之,这些结果将为RF设计人员提供一套新的工具,他们可以使用这些工具减少现代设备中功率放大器的当前数量,并促进新技术在已经指定的通信频段中提高数据速率和效率。这反过来将导致更有效地使用可用频谱,而没有与诸如动态频谱接入之类的技术相关联的复杂的监管障碍。这项工作的更广泛影响在于多频带功率放大器能够降低下一代收发器的总体成本,同时产生更灵活和鲁棒的移动终端。
项目成果
期刊论文数量(0)
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Nathan Neihart其他文献
Nathan Neihart的其他文献
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{{ truncateString('Nathan Neihart', 18)}}的其他基金
BRIGE: Architectures and Circuits for Simultaneous Spectrum Sensing and Data Reception in Cognitive Radio
BRIGE:认知无线电中同步频谱感知和数据接收的架构和电路
- 批准号:
0926833 - 财政年份:2009
- 资助金额:
$ 30万 - 项目类别:
Standard Grant
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