Wideband Silicon-Based Receivers for RF/Microwave Spectrum Sensing

用于射频/微波频谱传感的宽带硅基接收器

• 批准号: 1230274
• 负责人: Kamran Entesari
• 金额: $ 28.73万
• 依托单位: Texas A&M Engineering Experiment Station
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2012
• 资助国家: 美国
• 起止时间: 2012-09-01 至 2016-08-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=1230274&HistoricalAwards=false
• 关键词: Wideband; Silicon; Based; Receivers; RF

AbstractIntellectual MeritCognitive radio systems offer the opportunity to use dynamic spectrum management techniques to adapt to immediate local spectrum availability over huge swaths of spectrum when the primary users are not present. The objective of this research is to develop a unique wideband silicon-based spectrum sensing receiver for cognitive radios. With respect to intellectual merit, the proposed receiver enables spectrum sensing over multi-octave radio/microwave frequency range without the need for any complex tunable image-reject filter and a broadband frequency synthesizer to drastically reduce the power consumption and the complexity of the receiver. The realization of this receiver is possible by two-step down conversion and employing a narrowband frequency synthesizer, an integer frequency divider and switchable harmonic mixers in the front-end architecture. Given the wide variations in signal bandwidth and formats that must be reliably sensed, a type of programmable energy detection method is employed to further relax challenging requirements for cognitive radio front-ends.Broader ImpactWith respect to broader impact, simple implementation, miniaturization and low power consumption of wideband spectrum sensing receivers are essential features for cognitive radios operating in a battery-powered environment for applications including man-portable military radios, avionics, electronic warfare, eavesdropping, surveillance and commercial wireless mobile systems. The results of the project will advance microwave integrated circuits and wireless communication fields. The proposed project allows talented students to train in microwave integrated circuits and wireless communications through a variety of research, and educational/outreach activities. Educational opportunities for under-represented groups will be explored by (1) attending annual Electrical and Computer Engineering?Unplugged program and Society of Women Engineers summer camp to inspire high school and women students to join the engineering program, and (2) collaborating with Enrichment Experience Engineering program at Texas A&M University to provide workshops for minority high school teachers in engineering.

AbstractIntellectual MeritCognitive无线电系统提供了使用动态频谱管理技术的机会，以适应在主要用户不存在的情况下，在巨大的频谱带上立即获得本地频谱。本研究的目的是开发一种独特的宽带硅基频谱感知接收机的认知无线电。相对于智力的优点，所提出的接收器，使频谱感测多倍频程无线电/微波频率范围内，而不需要任何复杂的可调谐镜像抑制滤波器和宽带频率合成器，以大大降低功耗和接收器的复杂性。该接收机的实现是可能的，通过两步下变频，并采用窄带频率合成器，整数分频器和可切换的谐波混频器的前端架构。考虑到信号带宽和格式的广泛变化，必须可靠地感知，一种可编程能量检测方法被采用，以进一步放宽对认知无线电前端的挑战性要求。宽带频谱感测接收机的小型化和低功耗是在电池中操作的认知无线电的基本特征，便携式军用无线电、航空电子设备、电子战、窃听、监视和商用无线移动的系统等应用的供电环境。该项目的成果将推动微波集成电路和无线通信领域的发展。拟议的项目允许有才华的学生通过各种研究和教育/推广活动进行微波集成电路和无线通信方面的培训。为代表性不足的群体的教育机会将探索（1）参加年度电气和计算机工程？不插电计划和女工程师夏令营的社会，以激励高中和女学生加入工程计划，和（2）在得克萨斯州A M大学的丰富经验工程计划合作，为少数民族高中教师在工程工作坊。