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Updated: Sep 11, 2025

Design and Characterization Methodology for Efficient Wide Range Tunable MEMS Filters
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Design and Characterization Methodology for Efficient Wide Range Tunable MEMS Filters

Published on: February 4, 2018

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负载容量匹配用于基于共振频率调整的多石英调叉增强激光光谱传感器的共振频率调整

Hanxu Ma, Shunda Qiao, Ying He

    Optics express
    |August 13, 2025
    PubMed
    概括

    一种新的方法精确地匹配了双光谱传感器中的石英调叉 (QTF) 反响频率. 这大大提高了传感器性能和气体分析的甲检测极限.

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    相关概念视频

    Design Example: Underdamped Parallel RLC Circuit01:17

    Design Example: Underdamped Parallel RLC Circuit

    Consider designing an oscillator circuit, a crucial component in various electronic devices and systems. The objective is to create an oscillator circuit with specific characteristics: a damped natural frequency of 4 kHz and a damping factor of 4 radians per second. To accomplish this, a parallel RLC circuit is employed, known for its ability to sustain oscillations at a resonant frequency. In this case, the damping factor is pivotal in achieving the desired performance.
    Starting with a fixed...
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    Parallel Resonance01:23

    Parallel Resonance

    The parallel RLC circuit is an arrangement where the resistor (R), inductor (L), and capacitor (C) are all connected to the same nodes and, as a result, share the same voltage across them. The parallel RLC circuit is analyzed in terms of admittance (Y), which reflects the ease with which current can flow. The admittance is given by:
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    Equivalent Capacitance01:19

    Equivalent Capacitance

    Multiple capacitors can be connected in a circuit in series or parallel configuration. When the capacitor combination is connected to a battery, the potential drop across each capacitor and the magnitude of charge stored in the individual capacitor depends on the type of the connection. The capacitor combination is replaced by a single equivalent capacitor that stores the same amount of charge as the combination for a given potential difference.
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    Series Resonance01:17

    Series Resonance

    The RLC circuit impedance is defined as the ratio of the supply voltage to the circuit current. Resonance in such a circuit occurs when the imaginary part of this impedance equals zero. This specific condition means that the inductive reactance is exactly equal to the capacitive reactance. The frequency at which this happens is known as the resonant frequency. Mathematically, the resonant frequency is inversely proportional to the square root of the product of the inductance (L) and capacitance...
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