Performance of low-loss RF MEMS capacitive switches

作者: C.L. Goldsmith , Zhimin Yao , S. Eshelman , D. Denniston

DOI: 10.1109/75.704410

关键词: OptoelectronicsMicroelectromechanical systemsFigure of meritElectrical engineeringSurface micromachiningMicrowaveCutoff frequencyRadio frequencyCapacitive sensingMaterials scienceCapacitance

摘要: 'This letter details the construction and performance of metal membrane radio frequency MEMS switches at microwave millimeter-wave frequencies. These shunt possess a movable which pulls down onto metal/dielectric sandwich to form capacitive switch. exhibit low loss (<0.25 dB 35 GHz) with good isolation (35 GHz). devices on-off capacitance ratios in range 80-110 cutoff (figure merit) excess 9000 GHz, significantly better than that achievable electronic switching devices.

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