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    • 3. 发明授权
    • Micro-electromechanical switched tunable inductor
    • 微机电开关可调谐电感
    • US07847669B2
    • 2010-12-07
    • US11999527
    • 2007-12-06
    • Farrokh AyaziMina RaieszadehPaul A. Kohl
    • Farrokh AyaziMina RaieszadehPaul A. Kohl
    • H01F5/00H01F27/28H01F21/02H01F21/10H01G2/00H01G5/00
    • H01F17/0006H01F21/12H01F27/022H01F2017/0086H01F2021/125
    • Disclosed is an integrated tunable inductor having mutual micromachined inductances fabricated in close proximity to a tunable inductor that is switched in and out by micromechanical ohmic switches to change the inductance of the integrated tunable inductor. To achieve a large tuning range and high quality factor, silver is preferably used as the structural material to co-fabricate the inductors and micromachined switches, and silicon is selectively removed from the backside of the substrate. Using this method, exemplary tuning of 47% at 6 GHz is achievable for a 1.1 nH silver inductor fabricated on a low-loss polymer membrane. The effect of the quality factor on the tuning characteristic of the integrated inductor is evaluated by comparing the measured result of substantially identical inductors fabricated on various substrates. To maintain the quality factor of the silver inductor, the device may be encapsulated using a low-cost wafer-level polymer packaging technique.
    • 公开了一种集成的可调电感器,其具有相互微机电感应,其紧密接近可调电感器,该可调谐电感器由微机械欧姆开关导入和切出以改变集成可调电感器的电感。 为了实现大的调谐范围和高品质因素,优选使用银作为用于共同制造电感器和微加工开关的结构材料,并且硅从衬底的背面选择性地去除。 使用这种方法,在低损耗聚合物膜上制造的1.1nH银电感器可以实现在6GHz下47%的示例性调谐。 通过比较在各种衬底上制造的基本相同的电感器的测量结果来评估质量因子对集成电感器的调谐特性的影响。 为了保持银电感器的品质因素,可以使用低成本晶圆级聚合物封装技术封装器件。