Self-Biased Y-Junction Circulator

自偏置 Y 结环行器

• 批准号: 0140177
• 负责人: Carmine Vittoria
• 金额: $ 22.5万
• 依托单位: Northeastern University
• 依托单位国家: 美国
• 项目类别: Continuing grant
• 财政年份: 2002
• 资助国家: 美国
• 起止时间: 2002-06-01 至 2006-05-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=0140177&HistoricalAwards=false
• 关键词: Self; Biased; Junction; Circulator

0140177VittoriaThe proposes a two-fold research plan for the purpose of producing the first generation of self-biased ferrite circulator devices. In the first research plan he develops techniques to prepare composite ferrite/dielectric materials consisting of dielectric paste filling material and oriented hexaferrite particles. In the second phase of the research plan, he will utilize the special properties of the composites to design and test circulation devices from 1 to 20 GHz. He anticipates that the performance of the self-biased circulators to behave similarly to circulators using spinel and garnet ferrites in terms of frequency bandwidth of operation, insertion loss and isolation. Whereas the traditional circulator devices is characterized by the so-called "puck" design, his design will integrate the circulator devices into a semiconductor/dielectric substrate utilizing the well known thick film glass on screen print technolagies. In addition, the self-biased hexaferrite circulators proposed here will do away with permanent magnets which in most cases occupy considerable space in a microwave circuit board. Reduction in circulator size translates into reduction of fabrication costs and increased efficiency in the performance of the overall microwave circuit board. The research program comprises of preparation of composites of hexaferrites and dielectric paste on glass, characterization of the oriented ferrite composite materials, fabrication of stripline/microstrip circulators, testing of the circulators and modeling of the microwave and static properties of the composite materials.

0140177 vittoria提出了一个双重研究计划，目的是生产第一代自偏置铁氧体环行器器件。在第一个研究计划中，他开发了由介电膏填充材料和定向六铁氧体颗粒组成的复合铁氧体/介电材料的制备技术。在研究计划的第二阶段，他将利用复合材料的特殊性能设计和测试1至20 GHz的循环装置。他预计自偏置环行器在工作频带、插入损耗和隔离方面的性能与使用尖晶石和石榴石铁氧体的环行器相似。传统的环行器器件以所谓的“puck”设计为特征，而他的设计将利用众所周知的厚膜玻璃丝网印刷技术将环行器器件集成到半导体/介电基板中。此外，本文提出的自偏置六铁氧体环行器将消除在大多数情况下占据相当大空间的永磁体。循环器尺寸的减小转化为制造成本的降低和整体微波电路板性能的提高效率。研究内容包括：玻璃上六铁氧体与介电浆料复合材料的制备、取向铁氧体复合材料的表征、带状/微带环形器的制备、环形器的测试以及复合材料的微波和静态性能的建模。