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相关概念视频

Design Example01:23

Design Example

348
The innovation of touch-tone telephony revolutionized the telecommunications industry by replacing the traditional rotary dial with a dual-tone multi-frequency (DTMF) signaling system. This system uses a matrix-style keypad with buttons arranged in four rows and three columns, creating 12 distinct signals each assigned to a pair of frequencies. Each button press results in a simultaneous generation of two sinusoidal tones – one from a low-frequency group (697 to 941 Hz) and one from a...
348
Active Filters01:25

Active Filters

855
Active filters are electronic circuits that use operational amplifiers (op-amps), resistors, and capacitors to filter out unwanted frequency components from a signal. A first-order low-pass active filter is designed to pass signals with a frequency lower than a certain cutoff frequency and attenuate frequencies higher than that cutoff frequency. The transfer function for a first-order low-pass active filter is:
855
Parallel Resonance01:23

Parallel Resonance

229
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:
229
Aliasing01:18

Aliasing

159
Accurate signal sampling and reconstruction are crucial in various signal-processing applications. A time-domain signal's spectrum can be revealed using its Fourier transform. When this signal is sampled at a specific frequency, it results in multiple scaled replicas of the original spectrum in the frequency domain. The spacing of these replicas is determined by the sampling frequency.
If the sampling frequency is below the Nyquist rate, these replicas overlap, preventing the original...
159
Design Example: Underdamped Parallel RLC Circuit01:17

Design Example: Underdamped Parallel RLC Circuit

328
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...
328
Passive Filters01:27

Passive Filters

561
Passive filters are utilized to shape the frequency spectrum of signals across a diverse array of applications. These filters, using only passive elements like resistors (R), inductors (L), and capacitors (C), are capable of selectively allowing or blocking certain frequency ranges without the need for external power sources.
Low-Pass Filters
Low-pass filters are designed to transmit signals with frequencies lower than the cutoff frequency, ωc, and attenuate those above it. The cutoff...
561

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Design and Characterization Methodology for Efficient Wide Range Tunable MEMS Filters
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基于特征的替代品的基于共振器的切口过器的计算效率高的统计设计和产量优化.

Slawomir Koziel1,2, Tanveerul Haq3

  • 1Engineering Optimization and Modeling Center, Reykjavik University, 101, Reykjavik, Iceland.

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|September 8, 2023
PubMed
概括

本研究介绍了一种计算效率高的方法,用于统计分析和优化基于共振器的隙过器. 该方法通过考虑制造公差来提高设计可靠性,确保尽管制造不准确,但性能更好.

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科学领域:

  • 电气工程 电气工程
  • 微波工程 微波工程
  • 计算电磁学 计算机电磁学

背景情况:

  • 现代微波设备需要精确的电性能,需要精细的几何参数调整.
  • 操作频率的增加导致被动微波电路的物理尺寸较小,从而增加了对制造公差的敏感性.
  • 制造不准确性会对核心频率和带宽等关键参数产生重大影响,特别是对于狭窄带结构,如口过器.

研究的目的:

  • 提出一种简单,计算效率高,可靠的统计分析程序,并优化基于共振器的隙过器的产量.
  • 开发一种方法,量化制造公差的影响,并将其纳入设计过程,以提高可靠性.
  • 增加尽管存在制造错误,但过器运行良好的可能性.

主要方法:

  • 使用基于特征的替代模型,使用最小的训练数据建立,以快速评估电路制造产量.
  • 开发一种代收益率优化程序,在移动的本地域内采用一系列基于特征的模型.
  • 使用这些模型作为预测器,以识别具有低计算成本的最大收益率的强大设计.

主要成果:

  • 通过使用两个互补互补的分环共振器 (CSRR) 基的隙过器演示了这种方法.
  • 获得的统计设计成本约为一百个电磁 (EM) 模拟.
  • 通过基于EM的蒙特卡罗分析证实了收益率评估的可靠性.

结论:

  • 拟议的方法提供了一种计算效率高,可靠的方法,用于统计分析和优化基于共振器的孔过器的产量.
  • 基于特征的替代建模方法有效地解决了制造容忍度,从而导致更强大的设计.
  • 这种方法显著降低了与实现高产量的微波波器设计相关的计算成本.