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High-impedance Buffer Amplifier For Micro-electromechanical System (MEMS) Resonator Measurements

机译:用于微机电系统(mEms)谐振器测量的高阻抗缓冲放大器

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The electrical performance of micro-electromechanical system (MEMS) resonators built at the U.S. Army Research Laboratory (ARL) requires measurement techniques that do not overstress the devices. As a result, we need a high-impedance amplifier that operates over an extended frequency range suitable for use ahead of a 50-ohm vector network analyzer (VNA). The prototype amplifier 'buffers' the resonator from the VNA. This amplifier was designed, fabricated, and tested during a fourweek period. It demonstrates that future designs using operational amplifiers with wider frequency ranges will be suitable for this application.

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