Novel Approaches to High-Performance Low-Noise InP Gunn Oscillators above 200 Ghz

9803781Kamoua本提案的目标是设计、制造和测试InP Gunn振荡器，用于在200 Ghz和300 GHz之间的频率处产生二次谐波发电。其目标是为接收机系统提供强大、低噪声、紧凑和高效的本地振荡器。我们方法的成本优势将刺激毫米波/亚毫米波领域的商业和军事应用的发展。这项工作的动机是PI最近的理论和实验结果表明，工作在D波段(110-170 GHz)基模的InP体效应振荡器可以获得高性能(射频输出功率100 mW)。将设计、制造和测试在有源区具有梯度掺杂分布的体效应器件结构。Gunn装置的设计将使用研究人员开发的蒙特卡罗模拟器进行。利用Hewlett-Packard高频结构模拟器(HFSS)对谐振型波导腔进行分析和设计。通过将蒙特卡罗方法和HFSS结果相结合，将获得对射频输出功率电平的实际估计，从而实现谐波平衡技术。这些估计将大大加快优化过程。研究工作将由纽约州立大学石溪分校和密歇根大学合作进行。该装置和谐振电路的设计将由国际和平研究所和一名研究生在石溪大学进行。安装和器件制造以及测量将由艾赛尔博士和一名研究生在密歇根大学进行。在第一年，将开发一种使用梁引线和/或微机械加工的新工艺技术，以简化封装步骤，并改善热管理、封装寄生和可靠性。第二年将开发适用于200 GHz至260 GHz频率的振荡器，最后一年将开发适用于260 GHz至300 GHz频率的振荡器。该项目的成功完成将为上毫米波区提供紧凑可靠的低噪声和高性能的定位振荡器。这将消除任何变容管乘法级，或至少极大地减少本振系统中的变容管乘法级，从而简化低噪声接收机中这种系统的设计。

9803781KamouaThe objective of this proposal is to design, build, and test InP Gunn oscillators for second-harmonic power generation at frequencies between 200Ghz and 300 Ghz. The goal is to provide powerful, low-noise, compact, and efficient local oscillators for receiver systems. The cost advantage of our approach would stimulate the development of commercial and military applications in the millimeter/submillimeter-wave region. This effort is motivated by the PI's recent theoretical and experimental results demonstrating that high performance (RF output power 100 mW) can be obtained from InP Gunn oscillators operating in the fundamental mode at D-band (110-170 GHz) frequencies.Gunn device structures with a graded doping profile in the active region will be designed, fabricated, and tested. The design of the Gunn devices will be performed using a Monte Carlo simulator developed by the investigators. The Hewlett-Packard High-Frequency Structure Simulator (HFSS) will be used to analyze and design the resonant waveguide cavity. Realistic estimation of the RF output power levels will be obtained by coupling the Monte Carlo and the HFSS results in a harmonic-balance technique. These estimates will significantly expedite the optimization process.The research effort will be conducted as a collaboration of SUNY at Stony Brook and the University of Michigan. The design of the device and the resonant circuit will be carried out at Stony Brook by the PI and a graduate student. The mount and device fabrication as well as the measurements will be conducted at the University of Michigan by Dr. Eisele and a graduate student. During the first year, a new processing technologies using beam leads and/or micromaching will be developed to simplify the packaging step as well as improve heat management, package parasitic, and reliability. In the second year, oscillators will be developed for frequencies between 200 GHz and 260 GHz while in the final year oscillators will be developed for frequencies from 260 GHz to 300 GHz.Successful completion of the project will provide compact and reliable locate oscillators with low noise and high performance in the upper millimeter-wave region. This will either eliminate any varactor multiplier stage or at least greatly reduce their number in a local oscillator system, thus simplifying the design of such a system in low-noise receivers.