SBIR Phase I: Digital In-Phase and Quadrature Converter for Wide-Band Digital Beamforming

SBIR 第一阶段：用于宽带数字波束形成的数字同相和正交转换器

• 批准号: 9660720
• 负责人: Steven Kaplan
• 金额: $ 7.5万
• 依托单位: HYPRES, Inc.
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 1997
• 资助国家: 美国
• 起止时间: 1997-01-01 至 1997-06-30
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=9660720&HistoricalAwards=false
• 关键词: SBIR; Phase; Digital; Quadrature; Converter

*** ABSTRACT 9660720 Kaplan This Small Business Innovation Research Phase I project will develop a multi-chip superconducting digital beamforming (DBF) system for ground station communications with satellites. DBF leads to a significant improvement in communication systems performance by enhancing the reception of signals from a number of specific directions. The increase in performance will lower the power required of satellite transmitters, thereby reducing payload weight. The novel digital communications technology under investigation enables beamforming for wide-band and spread-spectrum communications signals, which cannot be performed by present narrow-band systems. The reliance on digital rather than unclog components ensures higher signal fidelity and signal-to-noise. During the Phase I project, a Digital In-Phase and Quadrature converter (DIQC) will be developed for the proposed beamforming system. The digital IQ circuit will avoid the imbalances in gain, phase, and time delay experienced by conventional communications and RADAR systems. The digital signal processing elements for the DIQC circuits will utilize Rapid Single Flux Quantum (RSFQ) multipliers, accumulators, and other arithmetic logic circuits. These circuits have already been successfully demonstrated at HYPRES at multi-gigahertz frequencies. The multi-chip DBF system developed in Phase II will subsequently be commercialized in wide-band digital beamforming communications and RADAR systems, with bandwidths up to 2.5 GHz at carrier frequencies up to 20 GHz. Commercial applications of the technology under development include wide-band narrow-beam satellite communication links, secure communication systems, multi-functional conformal antennas arrays for surveillance, intercept, and tracking. The digital signal processing functions developed in this program will benefit any application limited by processing speed, such as commercial spectrum analyzer and digitizer instruments, as well as digital electronic warfare s ystems. ***

* 摘要 小行星9660720 这个小型企业创新研究第一阶段项目将开发一个多芯片超导数字波束形成（DBF）系统，用于地面站与卫星的通信。DBF通过增强来自多个特定方向的信号的接收而导致通信系统性能的显著改善。性能的提高将降低卫星发射机所需的功率，从而减轻有效载荷的重量。正在研究的新型数字通信技术能够实现宽带和扩频通信信号的波束成形，这是目前窄带系统无法实现的。对数字而非无阻塞元件的依赖确保了更高的信号保真度和信噪比。在第一阶段的项目中，数字同相和正交转换器（DIQC）将被开发用于拟议的波束形成系统。数字IQ电路将避免传统通信和雷达系统所经历的增益、相位和时间延迟的不平衡。DIQC电路的数字信号处理元件将利用快速单通量量子（RSFQ）乘法器、乘法器和其他算术逻辑电路。这些电路已经在HYPRES上成功地在多千兆赫频率下进行了演示。在第二阶段开发的多芯片DBF系统随后将在宽带数字波束形成通信和雷达系统中商业化，带宽高达2.5 GHz，载波频率高达20 GHz。 正在开发的技术的商业应用包括宽带窄波束卫星通信链路、安全通信系统、用于监视、拦截和跟踪的多功能共形天线阵列。 本项目开发的数字信号处理功能将使任何受处理速度限制的应用受益，如商用频谱分析仪和数字化仪，以及数字电子战系统。***