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Filter Design and Applications Filter Design and Applications

Filter Design and Applications - PowerPoint Presentation

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Uploaded On 2015-12-11

Filter Design and Applications - PPT Presentation

ECE 480 Team 3 Team Members Nate Kesto Mike Mock Justin Bohr Yuan Mei Xie He Chaoli Ang Outline Introduction Filter Designs Low Pass High Pass Band Width Band Pass Differential ID: 221083

pass filter differential applications filter pass applications differential designs band speaker stop power ended high signal single http active

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Slide1

Filter Design and Applications

ECE 480 - Team 3

Team Members:

Nate

Kesto

Mike Mock

Justin Bohr

Yuan Mei

Xie

He

Chaoli

AngSlide2

Outline

Introduction

Filter Designs

Low Pass

High PassBand WidthBand Pass Differential FilteringFilter ApplicationsPower FilteringAudio ApplicationBand StopECG ApplicationSlide3

Introduction

Characteristics

Analog or Digital

Passive or Active

Linear or Non-LinearFilter TypesLow PassHigh PassBand Pass Band StopSlide4

Filter Designs – Order

and Cutoff Frequency

Order of filters

First order

Second order

Third and higher order

Cutoff frequencySlide5

Filter Designs – Low Pass

Passive

Transfer function

Slide6

Active

Filter Designs – Low PassSlide7

Filter Designs – High Pass

Passive

ActiveSlide8

Filter Designs – Bandwidth

Bandwidth

Cutoff frequency and center frequency

Q factorSlide9

Passive

Active

Filter Designs –

Band

Pass Slide10

Filter Designs – Differential

Concepts

Differential Filter: Any filter with a differential input and a differential output. Single-Ended Signal: -One of the signal terminals are grounded. Differential Signal: -Neither of the signal terminals are grounded.

Why do we need it ?

C

ouple with differential amplifiers.

Increase common mode rejection ratio, reduce noise and interference.Slide11

Filter Designs – Differential

Passive

High-pass Low-pass

Active

High-pass Low-passSlide12

Filter Designs – Differential

How to design it

Single-Ended to Differential-Ended Filter Translation.Single-Ended LP Filter Differential LP Filter *

Figures from Texas Instruments Application Report “Design of Differential Filters for High-Speed Signal Chains” by Ken ChanSlide13

Filter Designs – Differential

Simulation result of both the Single Ended

and Differential filters using TINA-TISlide14

Buck Converter

Switched-Mode

Filter

Applications

– Power Slide15

Power Filter

Filter

Applications

– Power Slide16

Tina – TI Simulation

Filter

Applications

Power Slide17

Filter Applications – Power

ResultsSlide18

Filter Applications – Audio

3-way Speaker Crossover

Subwoofers (20 - 80Hz)

Midrange (80Hz - 2kHz)

Tweeter (2 - 20kHz)

http://www.waldonell.com/thoughts/sticky-articles/designing-a-100w-3-way-speaker-system/

Bode Plot for 3-way Crossover

Commercial 3-Way Speaker PairSlide19

Speaker Equivalent Circuit

Filter Applications

Audio

Speaker Impedance vs. Frequency

Design Goal:

Match speaker’s natural frequency response with crossover

Maintain appropriate power distribution

http://sound.westhost.com/tsp.htm

http://fmarvasti.com/Graphics/Impedance.jpgSlide20

Filter Applications – Audio

Speaker Crossover Schematic

Passive Elements (RLC Networks)

http://www.trueaudio.com/st_xov_1.htmSlide21

Filter Designs – Band Stop

Background

Analog

design

Digital designSlide22

Filter Applications – Band Stop Slide23

Notch Filter by Matlab

Filter Applications – Band Stop Slide24

Plot of the Notch Filter

Filter

Applications – Band Stop Slide25

Filter

Applications – Band Stop Slide26

Filter Applications – ECG

AFE

Stellaris Oscilloscope

Band Pass

f

0

= .7 Hz

f

1

= 50 HzSlide27

Filter Applications – ECG

INA333

Input Filtering

Post Filtering

Stellaris Oscilloscope

Servo Loop

RLD

CardioSim

II

Low Pass

Inverting Low Pass

Inverting High

Pass

Low PassSlide28

Filter Applications – ECG

Servo Loop

Inverting Low Pass filter

Output sent to Reference pin of INA

Effective High PassSlide29

Questions?