SWEPT HETRODYNE MILLIMETER-WAVE VECTOR NETWORK ANALYZER

扫频外差毫米波矢量网络分析仪

• 批准号: 8364116
• 负责人: CURT R DUNNAM
• 金额: $ 0.26万
• 依托单位: CORNELL UNIVERSITY
• 依托单位国家: 美国
• 财政年份: 2011
• 资助国家: 美国
• 起止时间: 2011-09-01 至 2012-08-31
• 项目状态: 已结题
• 来源: https://reporter.nih.gov/project-details/8364116
• 关键词: Address; Companions; Evaluation; Evolution; Frequencies; Funding; Grant; Hand; Measurement; National Center for Research Resources; Performance; Phase; Principal Investigator; Research; Research Infrastructure; Resolution; Resources; Source; System; Technology; United States National Institutes of Health; base; cost; cost effective; design; instrument; microwave electromagnetic radiation; millimeter; response; vector

This subproject is one of many research subprojects utilizing the resources provided by a Center grant funded by NIH/NCRR. Primary support for the subproject and the subproject's principal investigator may have been provided by other sources, including other NIH sources. The Total Cost listed for the subproject likely represents the estimated amount of Center infrastructure utilized by the subproject, not direct funding provided by the NCRR grant to the subproject or subproject staff. Benchtop wideband vector measurement of millimeter-wave components and networks is desirable for rapid evaluation and evolution of bridge designs in our HF spectrometers. However, no relatively low-cost system of this type presently exists for millimeter-wavelength studies at W-band and higher. Therefore, we have designed a new type of versatile swept vector/magnitude-response evaluation set and contemplate assembling this instrument in a form usable over the millimeter-frequency ranges of our sources at 95, 170, 240 and 250GHz. Our preliminary design is a straightforward, effective and relatively inexpensive approach to such measurements, and, for economy, is based the use of several instruments and components presently on hand at our Center. For each millimeter-wave band, we propose to combine a conventional vector network analyzer (or spectrum analyzer for vector magnitude-only studies) and its companion tracking generator with a appropriate phase-locked source, and, with a waveguide harmonic mixer, PLDRO and several standard microwave components, realize an economical but high-performance scalar network analyzer. Our design is unique in that it is based on and offers the performance advantages of a cost-effective, high-dynamic range block converter, in this case combined with a millimeter-wave source which is phase-locked to the conventional vector network analyzer (or spectrum analyzer/tracking generator). This pairing allows us to realize an instrument of exceptional capability through the higher millimeter-wave frequency bands. We will only need to construct a fast divider (or, alternatively, substitute a frequency-specific PLDRO) and the mixer sections, since all other sub-systems are, or will be, on hand. Specifications at 170GHz are: sweep span of 10.0GHz and a dynamic range of 75dB for 20KHz resolution. Other millimeter-wave bands are to be addressed by substitution of appropriate source modules and waveguide-harmonic-mixers. Construction of a swept millimeter-wave analyzer based on this new design will be initiated during the ensuing Center grant renewal period.

该子项目是利用资源的众多研究子项目之一 由 NIH/NCRR 资助的中心拨款提供。子项目的主要支持 并且子项目的主要研究者可能是由其他来源提供的， 包括其他 NIH 来源。 子项目可能列出的总成本 代表子项目使用的中心基础设施的估计数量， NCRR 赠款不直接向子项目或子项目工作人员提供资金。 毫米波元件和网络的台式宽带矢量测量对于快速评估和改进我们的高频光谱仪中的电桥设计是可取的。然而，目前尚不存在用于 W 波段及更高波段毫米波长研究的此类相对低成本系统。因此，我们设计了一种新型多功能扫频矢量/幅度响应评估装置，并考虑以可在 95、170、240 和 250GHz 的毫米频率范围内使用的形式组装该仪器。我们的初步设计是一种直接、有效且相对便宜的测量方法，并且为了经济起见，基于使用我们中心现有的多种仪器和组件。对于每个毫米波段，我们建议将传统的矢量网络分析仪（或仅用于矢量幅度研究的频谱分析仪）及其配套跟踪发生器与适当的锁相源以及波导谐波混频器、PLDRO 和几个标准微波组件，实现了经济且高性能的标量网络分析仪。 我们的设计的独特之处在于，它基于具有成本效益的高动态范围块转换器，并提供其性能优势，在这种情况下，结合了锁相到传统矢量网络分析仪的毫米波源（或频谱分析仪/跟踪发生器）。这种配对使我们能够通过更高的毫米波频段实现具有卓越功能的仪器。 我们只需要构造一个快速分频器（或者，替代频率特定的 PLDRO）和混频器部分，因为所有其他子系统都已经或将会是现成的。 170GHz 的规格为：扫描范围为 10.0GHz，动态范围为 75dB，分辨率为 20KHz。其他毫米波段将通过替换适当的源模块和波导谐波混频器来解决。基于这一新设计的扫频毫米波分析仪的建造将在随后的中心拨款更新期间启动。