FINE RESOLUTION PHASE-SHIFTER FOR TPPI IMPLEMENTATION

用于 TPPI 实施的精细分辨率移相器

• 批准号: 7723957
• 负责人: PETER P BORBAT
• 金额: $ 0.58万
• 依托单位: CORNELL UNIVERSITY
• 依托单位国家: 美国
• 财政年份: 2008
• 资助国家: 美国
• 起止时间: 2008-09-01 至 2009-08-31
• 项目状态: 已结题
• 来源: https://reporter.nih.gov/project-details/7723957
• 关键词: Address; Bite; Computer Retrieval of Information on Scientific Projects Database; Funding; Grant; Institution; Phase; Physiologic pulse; Pulse taking; Research; Research Personnel; Resolution; Resources; Signal Transduction; Source; System; Time; United States National Institutes of Health; Work; base; quantum; time use

This subproject is one of many research subprojects utilizing the resources provided by a Center grant funded by NIH/NCRR. The subproject and investigator (PI) may have received primary funding from another NIH source, and thus could be represented in other CRISP entries. The institution listed is for the Center, which is not necessarily the institution for the investigator. Implementation of multi-quantum coherence (MQC) requires time delays and phase advances in small steps. Whereas we can produce very accurate timing using specialized ECL modules, accurate phase incrementing is a formidable task. To address this issue we procured a 6-20 GHz 12-bit phase shifter which we will use in our initial MQC work that relies on uniform spectrum excitation. A hardware control will be based on USB interfaced FPGA modules, which we already have. Phase cycle tables and look-up tables will be downloaded via USB and the unit will be controlled in real time using pulse sequence and phase advance/reset signal lines from the system DSP real-time controller. This will enable us to implement Time-Proportional Phase Incrementation (TPPI) for the MQC work.

这个子项目是许多利用 由NIH/NCRR资助的中心赠款提供的资源。子项目和 研究者（PI）可能从另一个NIH来源获得了主要资金， 因此可以在其他CRISP条目中表示。所列机构为 研究中心，而研究中心不一定是研究者所在的机构。 多量子相干（MQC）的实现需要时间延迟和相位小步前进。虽然我们可以使用专门的ECL模块产生非常精确的定时，但精确的相位增量是一项艰巨的任务。为了解决这个问题，我们采购了一个6-20 GHz的12位移相器，我们将在我们最初的MQC工作中使用它，它依赖于均匀的频谱激励。 硬件控制将基于USB接口的FPGA模块，我们已经有了。相位周期表和查找表将通过USB下载，装置将使用来自系统DSP实时控制器的脉冲序列和相位提前/复位信号线进行真实的实时控制。 这将使我们能够为MQC工作实施时间比例相位增量（TPPI）。