Session TU4D: Microwave Magnetic Devices

IEEE MTT-S International Microwave Symposium Digest, 2005. Pub Date : 2005-06-17 DOI:10.1109/MTT67880.2005.9387788

D. Adam, B. El-sharawy

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Abstract

This session comprises seven papers covering recent developments in ferrite phase shifters, lumped element circulators, left-handed ferrite waveguides, microwave inductors and magnetostatic wave (MSW) oscillators. The stress related insertion loss in longitudinal field ferrite devices is analyzed and a method is suggested for screening ferrite rod samples to determine suitability for use in dual-mode phase shifters. A duplexing reciprocal phase shifter is described that integrates a circulator function into the phase shifter structure. Two papers discuss improvements to lumped element isolator and circulator designs through improved techniques and a novel gyrator circuit. A lefthanded periodic, ferrite-filled waveguide structure was modeled and fabricated. Measurements confirmed the existence of pass-bands below the waveguide cut-off frequency. Ferromagnetic RF integrated inductors are described that exhibit a record breaking Q 12 at 1GHz using soft CoNbZr films and closed magnetic circuits. Finally a novel regenerative detector using a MSW resonator is discussed that combines high sensitivity with simplicity and potentially low cost..

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会议TU4D:微波磁器件

本次会议包括七篇论文，涵盖铁氧体移相器、集总元环行器、左旋铁氧体波导、微波电感器和静磁波振荡器的最新进展。分析了纵向磁场铁氧体器件中与应力相关的插入损耗，提出了一种筛选铁氧体棒样品的方法，以确定是否适合用于双模移相器。描述了一种将环行器功能集成到移相器结构中的双工互易移相器。两篇论文讨论了通过改进技术和一种新的旋转电路来改进集总元件隔离器和环行器的设计。模拟并制备了一种左旋周期铁氧体填充波导结构。测量证实了在波导截止频率以下存在通带。铁磁射频集成电感器采用软CoNbZr薄膜和闭合磁路，在1GHz时显示破纪录的q12。最后讨论了一种新型的利用固体垃圾谐振器的再生探测器，该探测器结合了高灵敏度、简单性和潜在的低成本。

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IEEE MTT-S International Microwave Symposium Digest, 2005.

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