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相关概念视频

Design Example01:23

Design Example

316
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...
316
Design Example: Capacitance Multiplier Circuit01:20

Design Example: Capacitance Multiplier Circuit

705
In integrated circuit technology, a capacitance multiplier is often utilized to produce a larger capacitance value when a small physical capacitance falls short. This is achieved by a circuit that multiplies capacitance values by a factor of up to 1000, such that a 10-pF capacitor can replicate the performance of a 100-nF capacitor.
The circuit illustrated in Figure 1 below incorporates two op-amps, with the first operating as a voltage follower and the second acting as an inverting amplifier.
705
Upsampling01:22

Upsampling

204
Managing signal sampling rates is essential in digital signal processing to maintain signal integrity. A decimated signal, characterized by a reduced frequency range due to its lower sampling rate, can be upsampled by inserting zeros between each sample. This upsampling process expands the original spectrum and introduces repeated spectral replicas at intervals dictated by the new Nyquist frequency. To refine this zero-inserted sequence, it is passed through a lowpass filter with a cutoff...
204
Active Filters01:25

Active Filters

783
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:
783
Passive Filters01:27

Passive Filters

521
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...
521
Design Example: Vintage Mixing Console01:17

Design Example: Vintage Mixing Console

205
A sound engineer at a music company recently encountered a problem. The output from their newly acquired studio's vintage mixing console was too low for the requirements of modern recording equipment. To rectify this situation, the engineer decided to design an audio pre-amplifier using an operational amplifier (op-amp) to boost the signal level.
The specifications for the pre-amplifier were clear. It needed to amplify the audio signal by a factor of 10, have an input impedance above 10...
205

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相关实验视频

Updated: Jun 6, 2025

Transmission of Multiple Signals through an Optical Fiber Using Wavefront Shaping
09:43

Transmission of Multiple Signals through an Optical Fiber Using Wavefront Shaping

Published on: March 20, 2017

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优化单通道和多通道近似 DA 基过器设计的划定,使用对跨多通道复合器有影响力的单一 MAC 策略.

Britto Pari James1, Leung Man-Fai2, Mariammal Karuthapandian3

  • 1Vel Tech Rangarajan Dr. Sagunthala R&D Institute of Science and Technology, Chennai 600062, India.

Sensors (Basel, Switzerland)
|November 27, 2024
PubMed
概括
此摘要是机器生成的。

本研究介绍了一种高效的多通道FIR过器设计,使用时间分割复杂化 (TDM) 和近似分布式算法 (DA). 这种新的方法显著减少了数字信号处理应用的硬件资源,延迟和功耗.

关键词:
在FPGA中,FPGA是指FPGA.大致计算计算的近似值.分布式算术的分布式算术.有限冲动响应过器的过器.硬件优化 硬件优化多倍-积累单位的单位.

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Microfluidic Platform with Multiplexed Electronic Detection for Spatial Tracking of Particles
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One-Step Approach to Fabricating Polydimethylsiloxane Microfluidic Channels of Different Geometric Sections by Sequential Wet Etching Processes
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One-Step Approach to Fabricating Polydimethylsiloxane Microfluidic Channels of Different Geometric Sections by Sequential Wet Etching Processes

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相关实验视频

Last Updated: Jun 6, 2025

Transmission of Multiple Signals through an Optical Fiber Using Wavefront Shaping
09:43

Transmission of Multiple Signals through an Optical Fiber Using Wavefront Shaping

Published on: March 20, 2017

9.8K
Microfluidic Platform with Multiplexed Electronic Detection for Spatial Tracking of Particles
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科学领域:

  • 数字信号处理 数字信号处理
  • 在 VLSI 设计中,
  • 计算机工程 计算机工程

背景情况:

  • 多通道有限脉冲响应 (FIR) 过器在各种信号处理应用中至关重要.
  • 由于资源限制,这些过器的高效硬件实现具有挑战性.
  • 现有的设计往往需要大量的计算资源和功率.

研究的目的:

  • 提出一个新的多通道FIR过器设计.
  • 通过使用单个乘法加法单元来优化资源利用.
  • 在过器实现中减少延迟,面积和功耗.

主要方法:

  • 使用时间划分多重组 (TDM) 方法来共享资源.
  • 采用近似分布式算术 (DA) 电路来进行乘数优化.
  • 在DA框架内实现radix-8和radix-4 Booth算法.
  • 使用一个erratum修复单元用于输入流的截断和部分产品的构造.
  • 整合一个大致的华莱士树用于部分产品聚合.

主要成果:

  • 显著减少了延迟,面积和功耗.
  • 在Xilinx Vertex设备上达到高达429MHz的高工作频率.
  • 经过验证的过器性能,具有16点的多通道实现.
  • 使用TSMC 180nm CMOS技术和Cadence RC编译器确认了细胞水平的性能.

结论:

  • 拟议的基于TDM的多通道FIR过器设计可以大幅节省硬件成本.
  • 整合近似的DA技术有效地最大限度地减少了资源使用,提高了性能.
  • 该设计适用于需要低功率和面积的高频应用.