CAREER: RF Co-Designated Fully-Directional Antenna Interfaces for Dynamic and Efficient Spectrum Access

事业：射频共同指定的全向天线接口，用于动态和高效的频谱访问

• 批准号: 1941315
• 负责人: Dimitra Psychogiou
• 金额: $ 50万
• 依托单位: University of Colorado at Boulder
• 依托单位国家: 美国
• 项目类别: Continuing Grant
• 财政年份: 2020
• 资助国家: 美国
• 起止时间: 2020-02-01 至 2022-06-30
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=1941315&HistoricalAwards=false
• 关键词: CAREER; RF; Co; Designated; Fully

Wireless communication systems are increasingly covering every facet of our lives, including their use in mobile phones, healthcare delivery, autonomous driving, and space exploration. While wireless technologies are significantly changing the way our society is exploiting them for public safety and economic growth, they have resulted in an extremely congested radio spectrum. To address this challenge, innovative spectrum sharing solutions targeting new allocations at millimeter-wave frequencies (30-100 GHz), full-duplex spectrum usage and operation in under-utilized or unlicensed frequency bands are currently being considered. While the use of higher frequencies promises wider bandwidths and higher data-rates, these frequencies are not suitable for long-range communications and require expensive radio frequency (RF) hardware solutions. The main goal of this research is to address the nation's needs for spectrum sustainability, ubiquitous connectivity and increased national security for frequencies lower than 6 GHz, where the spectrum is more congested. In particular, this career development project will focus on RF co-designed fully-directional antenna interfaces that pave the way to efficient spectrum sharing through: i) full-duplex operation, ii) dynamic access of under-utilized and unlicensed frequency bands and iii) suppression of interference. The proposed research promises revolutionary improvements in spectrum sharing and allows for new capabilities in areas in which high-performance and high-density wireless technologies are of paramount importance, including next generation cellular communications, internet of things, and public safety. The program's broader educational goals include training of undergraduate and graduate students in areas related to next-generation RF systems, enhancing the Electrical Engineering (EE) curriculum at the University of Colorado Boulder with new class modules and a new class on tunable filter design techniques. The outreach activities will focus on broadening the participation of students in EE and promote higher education to traditionally under-represented populations including community-college students, veterans and women.The major objective of this proposal is to investigate and establish the theoretical foundations for highly-miniaturized and highly-reconfigurable RF front-ends through a new RF front-end design and integration concept based on RF co-designed fully-directional antenna interfaces that are in-field programmable and enable dynamic and efficient spectrum access. In particular, the proposed research will set the basic foundations for: i) fully-directional filter synthesis and design methods, ii) RF components with collocated signal processing capabilities and iii) multi-level transfer function tunability of the RF front-end chain. A specific focus of the research will be to understand the fundamental limits of spatio-temporal modulation and non-reciprocal filter design and determine trade-offs for various high-impact applications ranging for cellular to military and space communication systems. Tuning methods that facilitate multiple levels of transfer function reconfigurability will be developed, and their effectiveness in terms of efficient spectrum access will be studied. Furthermore, the trade-offs of size and performance of RF co-designed antenna interfaces will be systematically investigated. The proposed techniques will transform the way full-duplex radios are implemented and operated in spectrally-congested environments and will pave the way to generalized RF front-ends with multi-functional and multi-standard capabilities.This award reflects NSF's statutory mission and has been deemed worthy of support through evaluation using the Foundation's intellectual merit and broader impacts review criteria.

无线通信系统正日益覆盖我们生活的方方面面，包括它们在移动的电话、医疗保健、自动驾驶和太空探索中的应用。虽然无线技术正在显著改变我们的社会利用它们促进公共安全和经济增长的方式，但它们导致了极其拥挤的无线电频谱。为了应对这一挑战，目前正在考虑针对毫米波频率（30-100 GHz）的新分配、全双工频谱使用和在未充分利用或未授权频带中的操作的创新频谱共享解决方案。虽然使用更高的频率可以保证更宽的带宽和更高的数据速率，但这些频率不适合长距离通信，需要昂贵的射频（RF）硬件解决方案。这项研究的主要目标是解决国家对频谱可持续性、无处不在的连接性和增强低于6 GHz频率的国家安全的需求，因为在6 GHz频率下，频谱更加拥挤。特别是，这个职业发展项目将专注于RF协同设计的全定向天线接口，通过以下方式为有效的频谱共享铺平道路：i）全双工操作，ii）未充分利用和未授权频段的动态接入以及iii）抑制干扰。拟议的研究有望在频谱共享方面取得革命性的改进，并在高性能和高密度无线技术至关重要的领域实现新的功能，包括下一代蜂窝通信、物联网和公共安全。该计划更广泛的教育目标包括在与下一代RF系统相关的领域培训本科生和研究生，通过新的课程模块和可调谐滤波器设计技术的新课程增强科罗拉多博尔德大学的电气工程（EE）课程。外联活动将侧重于扩大学生对教育的参与，并向传统上代表性不足的人口，包括社区学院学生，该提案的主要目标是通过一种新的射频前端设计和集成概念，研究和建立高度小型化和高度可重构的射频前端的理论基础，这种设计和集成概念基于射频协同设计，定向天线接口是现场可编程的，并且能够实现动态和高效的频谱接入。特别是，拟议的研究将为以下方面奠定基础：i）全方向滤波器合成和设计方法，ii）具有配置信号处理能力的RF组件，iii）RF前端链的多级传递函数可调谐性。研究的一个具体重点将是了解时空调制和非互易滤波器设计的基本限制，并确定蜂窝到军事和空间通信系统的各种高影响力应用的权衡。调谐方法，促进多层次的传递函数的可重构性将被开发，其有效性方面的有效频谱接入将被研究。此外，RF协同设计的天线接口的尺寸和性能的权衡将被系统地研究。建议的技术将改变全双工无线电在频谱拥挤的环境中实现和运行的方式，并将为具有多功能和多标准能力的通用RF前端铺平道路。该奖项反映了NSF的法定使命，并通过使用基金会的知识价值和更广泛的影响审查标准进行评估，被认为值得支持。

项目成果

Co-designed quasi-circulator and bandpass filter

共同设计的准循环器和带通滤波器

• 发表时间: 2021
• 期刊: Netherlands
• 作者: Ashley, Andrea;Psychogiou, Dimitra
• 通讯作者: Psychogiou, Dimitra

RF Co-Designed Bandpass Filter/Circulator With Tunable Center Frequency, Bandwidth, and Out-of-Band Isolation

RF 共同设计的带通滤波器/循环器，具有可调中心频率、带宽和带外隔离

• DOI: 10.1109/lmwc.2021.3077797
• 发表时间: 2021
• 期刊: IEEE Microwave and Wireless Components Letters
• 影响因子: 3
• 作者: Ashley, Andrea;Psychogiou, Dimitra
• 通讯作者: Psychogiou, Dimitra

Tunable Multi-Band Non-Reciprocal Bandpass Filters

可调谐多频带非互易带通滤波器

• DOI: 10.1109/ims37962.2022.9865607
• 发表时间: 2022
• 期刊: 022 IEEE/MTT-S International Microwave Symposium - IMS 2022
• 作者: Simpson, Dakotah;Vryonides, Photos;Nikolaou, Symeon;Psychogiou, Dimitra
• 通讯作者: Psychogiou, Dimitra

RF Co-Designed Non-Reciprocal Bandpass Filters

RF 联合设计的非互易带通滤波器

• DOI: 10.1109/apwc52648.2021.9539570
• 发表时间: 2021
• 期刊: 2021 IEEE-APS Topical Conference on Antennas and Propagation in Wireless Communications (APWC
• 作者: Psychogiou, Dimitra;Ashley, Andrea
• 通讯作者: Ashley, Andrea

Non-Reciprocal MMIC-Based Dual-Band Bandpass Filters

基于不可逆 MMIC 的双频带带通滤波器

• DOI: 10.1109/ims19712.2021.9574797
• 发表时间: 2021
• 期刊: 2021 IEEE MTT-S International Microwave Symposium (IMS
• 作者: Ashley, Andrea;Psychogiou, Dimitra
• 通讯作者: Psychogiou, Dimitra