STTR Phase I: Frequency Agile Reconfigurable WWAN/WPAN Radio Design

这个小型企业技术转让（STTR）第一阶段项目将建模、设计、模拟、开发并向工业合作伙伴过渡频率敏捷可重构无线电的关键要素，包括中数据速率无线广域网（WWAN）无线电和超高数据速率短距离无线个人局域网（WPAN）无线电。对无线数据的需求将很快超过可用的射频频谱。虽然可用的新频谱有限，但无线设备射频前端的复杂性已经令人望而生畏，增加更多的射频频段只会增加更多的开关和更多的表面声波（SAW）滤波器。在短期内，所提出的工作的频率敏捷方面将使RF前端能够覆盖0.8GHz - 5GHz的整个频谱，只需3个RF前端。本文的研究重点是设计具有自适应消除发射漏音的可调谐LC滤波器和设计高效率的瓦级功率放大器。最后，将评估点对点特设无线网络的潜力，以提供对共同感兴趣的大数据文件的辅助访问；并且，将设计一个短距离60GHz收发器前端，使整个无线电可以快速重新配置，在0.8-5GHz或60GHz之间工作。该项目的更广泛的影响/商业潜力是，频率灵活的RF前端架构可以通过允许单个收发器和可调谐RF滤波器覆盖整个频率倍程内的任何频段，从而显着提高无线前端的成本和性能。该项目的早期回报将是减少无线设备（特别是蜂窝电话）前端的RF开关和RF滤波器的数量。随着现代手机必须处理的不同频带数量的增加，它们的成本增加，而它们的射频性能下降，因为可用的射频开关的开/关阻抗比很小。频率灵活的射频前端减少了射频开关损耗，从而提高了手机的射频性能。这将简化政府？在不考虑无线电复杂性的情况下发布新频段的过程。该项目的长期商业潜力在于，它能够通过使用WPAN无线电促进移动设备之间的高数据速率自组织网络，从而显著减少通过WWAN传输的数据量。

This Small Business Technology Transfer (STTR) Phase I project will model, design, simulate, develop and transition to industrial partners the key elements of Frequency Agile Reconfigurable Radios that incorporate both medium-data-rate wireless wide area network (WWAN) radios and ultra-high-data-rate short-range wireless personal area network (WPAN) radios. Demand for wireless data will soon outstrip available RF spectrum. While limited new spectrum is available, the complexity of wireless device RF front ends is already daunting and adding more RF bands will just add more switches and more surface- acoustic-wave (SAW) filters. In the near term, the Frequency agile aspect of the proposed work will enable RF front ends that can cover the entire spectrum from 0.8GHz - 5GHz with only 3 RF front ends. This research focuses on the design of tunable LC filters coupled with adaptive cancelation of transmit tone leakage and the design of high efficiency watt-level power amplifiers. Finally, the potential for peer-to-peer ad-hoc wireless networking to provide auxiliary access to large data files of common interest will be assessed; and, a short range 60GHz transceiver front end will be designed such that the overall radio can be rapidly reconfigured to operate between 0.8-5GHz or at 60GHz.The broader impact/commercial potential of this project is that a frequency agile RF front end architecture can dramatically improve the cost and performance of wireless front ends by allowing a single transceiver and tunable RF Filter to cover any frequency band within an entire octave of frequency. An early payoff for the project will be the reduction in the number of RF switches and RF filters in the front end of wireless devices, especially cellular phones. As the number of distinct frequency bands that must be addressed by modern cell phones increases, their cost increases and their RF performance decreases because the on/off impedance ratio of available RF switches is small. The frequency agile RF front end will improve the RF performance of cellular phones due to decreased RF switch losses. This would simplify the government?s process to issue new frequency bands without considering radio complexity. The long term commercial potential for the project is its ability to dramatically reduce the data that travels over the WWAN by facilitating high data rate ad-hoc networks between mobile devices using a WPAN radio.