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High quality factor W band MEMS-tunable evanescent-mode bandstop resonators are presented for the first time. The precision, tolerances, and small feature capability of silicon microfabrication techniques enable these resonators to be the highest frequency tunable evanescent-mode cavities shown to date. Their MEMS tuning technology requires very low power to operate, and the entire resonator-tuner...
For the first time, a magnetic ink containing permalloy nanoparticles coated with a polyelectrolyte shell is presented for miniaturization of radio frequency (RF) integrated inductors. Coating permalloy particles with an electrolyte polymer provides particle separation which minimizes eddy current losses. Coated particles are incorporated into a viscous ink to enable precise deposition. This magnetic...
This paper presents a novel design of high-quality factor (Qu) continuously-tunable resonator compatible with standard PCB fabrication technology. The proposed resonator is tuned by lumped element varactors placed on the top surface of a substrate-integrated evanescent-mode cavity, thus significantly reducing the complexity of integration without sacrificing Qu. The proposed design approach is compatible...
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