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The experimental results demonstrate exceptional performance among photoacoustic gas detection systems utilizing capacitive sensors. This paper presents the design, fabrication, and test of a high-sensitivity micro-electrical-mechanical system (MEMS) capacitive resonator specifically designed for photoacoustic gas detection.
Abstract: This paper presents the design, fabrication, and test of a high-sensitivity micro-electrical-mechanical system (MEMS) capacitive resonator specifically designed for photoacoustic gas detection. The sensor employs area-variable capacitive detection by surrounding the silicon resonator with dense comb teeth.
At sufficiently high frequency, the ESL value takes over, and the impedance starts to appear inductive. This produces an effect known as self-resonance at just the right frequency. Equivalent high frequency capacitor model.
With high speed digital signalling, capacitors should be selected such that they have ideal capacitive impedance up to the signal’s knee frequency (0.35 divided by the 10%-90% rise time). In other words, the self-resonant frequency should be greater than the knee frequency.
Here are two excellent sets of high frequency capacitors that are ideal for applications in the GHz range: American Technical Ceramics MLCCs (1-50 GHz) The 600 seriesof ceramic multilayer capacitors from American Technical Ceramics are ideal for use in the low-to-mid GHz ranges.
This produces an effect known as self-resonance at just the right frequency. Equivalent high frequency capacitor model. This means that the important characteristic distinguishing different capacitors for different frequency ranges is the capacitor’s self-resonant frequency.
A pre-scanning method to determine the actual resonant frequency is proposed followed by the adjustment of the operating frequency or the change of the tuning capacitance …
A resonant switched capacitor converter with high efficiency over a wide and continuous conversion ratio range is introduced. The efficiency of the topology depends …
Few capacitors in the 100uF+ range DO work well in MHz+ territory, be they film, ceramic, or otherwise; big C values mean physically large devices, which mean more …
Here, a minimum resonant capacitor design approach is proposed for the insulated-gate bipolar transistor (IGBT)-based high-power LLC resonant converter to improve …
high-voltage and high-frequency resonant converters. Using a Rogowski coil [3] followed by integrator and comparators is an alternative way to control a high-frequency resonant …
With a long time goal of detecting signs of potential machine failure, we demonstrate a proof-of-principle multiplexed, multichannel, inductive pulse sensor based on …
Texas Instruments'' innovative resonance sensing uses a sensor based on a parallel LC resonator. Any change in the inductance or capacitance of the sensor will change the sensor …
Few capacitors in the 100uF+ range DO work well in MHz+ territory, be they film, ceramic, or otherwise; big C values mean physically large devices, which mean more parasitic inductance. Beyond some point, the …
Abstract: This article presents a novel approach using a resonant inverter operating at 6.78 MHz for a robust capacitive power transfer (CPT) system with a small air …
Hi, I am fairly unfamiliar with the different types of capacitors besides the small ones used for small circuit boards, so I want to be sure I am purchasing the right thing. I will be running experiments with frequencies of 1 …
At low frequency, the impedance provided by the capacitor is dominant, and your capacitor will exhibit close to ideal behavior. At sufficiently high frequency, the ESL value takes over, and the impedance starts to appear …
An inductor-capacitor series resonant converter (LLC-SRC) provides soft-switching features ... Additional slope detection logic inserted in the ... 4 High-frequency resonant converter design …
Abstract: This paper presents the design, fabrication, and test of a high-sensitivity micro-electrical-mechanical system (MEMS) capacitive resonator specifically designed for photoacoustic gas …
At low frequency, the impedance provided by the capacitor is dominant, and your capacitor will exhibit close to ideal behavior. At sufficiently high frequency, the ESL value …
The sensing signals of the resonant currents are obtained from the flying capacitors rather than form the inductive element in which the current includes a dc component. The zero detection …
However, in a high power design with sufficiently large capacitors, long periods of resonant oscillation (T SI and T SII intervals) can be achieved to obtain high efficiency using …
Abstract: This article presents a novel approach using a resonant inverter operating at 6.78 MHz for a robust capacitive power transfer (CPT) system with a small air …
A pre-scanning method to determine the actual resonant frequency is proposed followed by the adjustment of the operating frequency or the change of the tuning capacitance in order to …
Fundamental Knowledge of High-Frequency Characteristics in Inductors and Capacitors – Impedance and Resonance (1) Fundamental Knowledge of High-Frequency …
ESR (ohms) Resonant Frequency (GHz) 1 0.1 1 10 0.1 0.01 1001 0001 0000 11 01 00 1000 Frequency (Mhz) ESR (ohms) 0.1 0.01 100 1000 10000 Conductive Metallization Nickel Plate …
The study of metallized capacitor behavior at high frequencies points out the presence of series and parallel resonances that could lead to oscillations, perturbations and additional losses in …
Multiple leads per capacitor termination, hollow bushings, tubes, flat foils, or tab conductors are typical methods. All ECI capacitors intended for high-frequency operation like resonant capacitors, snubbers, feed-through …
A simple resonant structure for the MHz frequency range includes an inductor with a single-layer foil winding connected to a capacitor. The foil should be at least two skin depth thick so that …