RESEARCH INITIATION AWARD: Quasi Optical Parameteric Electronics

研究启动奖：准光参数电子学

• 批准号: 9308979
• 负责人: Robert York
• 金额: --
• 依托单位: University of California-Santa Barbara
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 1993
• 资助国家: 美国
• 起止时间: 1993-09-01 至 1996-08-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=9308979&HistoricalAwards=false
• 关键词: RESEARCH; INITIATION; AWARD; Quasi; Optical

9308979 York This project will explore a new technology for low noise power amplification in the microwave and millimeter wave regime using a combination of parametric effects and quasi optical techniques. Although parametric amplifiers have long been known to posses superior noise properties to conventional transistor amplifiers, they have not been fully utilized in modern microwave systems due to limited power handling capacity, requirement of a strong high frequency pump signal, and sensitive circuit design. Some of these problems can be circumvented by operating a large planar array of low power parametric devices synchronously, with input and output signals coupled through simple antennas to propagating beams in free space. There is also evidence from analogous parametric laser systems that noise figure can be reduced further by exploiting the inherent phase sensitive amplification of parametric systems (squeezed states). Two types of arrays negative resistance parametric amplifiers, and frequency upconverters will be explored during this project. In the former case, spontaneous parametric oscillation is also possible and could provide a useful technique for sub harmonic and harmonic generation.

9308979约克这个项目将探讨一种新的技术，在微波和毫米波政权使用参数效应和准光学技术相结合的低噪声功率放大。虽然参数放大器长期以来被认为具有比传统晶体管放大器更上级的噪声特性，但是由于有限的功率处理能力、对强高频泵浦信号的要求以及敏感的电路设计，它们还没有被充分地利用在现代微波系统中。其中一些问题可以通过同步操作低功率参量器件的大型平面阵列来规避，输入和输出信号通过简单天线耦合到自由空间中的传播光束。也有证据表明，从类似的参数激光系统，噪声系数可以进一步降低，通过利用固有的相位敏感放大的参数系统（压缩状态）。本计画将探讨两种阵列式负阻参数放大器及上变频器。在前一种情况下，自发参量振荡也是可能的，并且可以提供一种有用的技术用于产生次谐波和谐波。