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.

这个子项目是许多利用资源的研究子项目之一 由NIH/NCRR资助的中心拨款提供。子项目的主要支持 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。 列出的子项目总成本可能 代表子项目使用的中心基础设施的估计数量， 而不是由NCRR赠款提供给子项目或子项目工作人员的直接资金。 毫米波组件和网络的台式宽带矢量测量对于我们的HF光谱仪中的电桥设计的快速评估和发展是理想的。然而，目前还没有相对低成本的这种类型的系统存在于W波段和更高的毫米波长的研究。因此，我们设计了一种新型的多功能扫频矢量/幅度响应评估集，并考虑组装这种仪器的形式可用于毫米频率范围内的源在95，170，240和250 GHz。我们的初步设计是一种简单，有效和相对便宜的方法来进行这种测量，并且为了经济，是基于使用我们中心目前手头上的几种仪器和组件。对于每个毫米波段，我们建议结合联合收割机的传统矢量网络分析仪（或频谱分析仪矢量幅度只研究）和它的同伴跟踪发生器与适当的锁相源，并与波导谐波混频器，PLDRO和几个标准的微波组件，实现经济，但高性能的标量网络分析仪。 我们的设计是独一无二的，因为它是基于一个具有成本效益的，高动态范围的块转换器，并提供了性能优势，在这种情况下，与毫米波源相结合，这是锁相到传统的矢量网络分析仪（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特殊能力的仪器。 我们只需要构建一个快速分频器（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在或将在手边。在170 GHz的规格是：扫描跨度为10.0 GHz，动态范围为75 dB，分辨率为20 KHz。其他毫米波段的解决办法是更换适当的源模块和波导谐波混频器。在随后的中心赠款续延期间，将开始建造基于这一新设计的扫频毫米波分析仪。