ece137a, notes set 16: second-order circuits

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ECE137A class notes, UCSB, Mark Rodwell, copyright 2019

ECE137A, Notes Set 16:

Second-Order Circuits

Mark Rodwell, Doluca Family Chair, ECE DepartmentUniversity of California, Santa Barbararodwell@ece.ucsb.edu

ECE137A class notes, UCSB, Mark Rodwell, copyright 2019

Parallel RLC Resonance

ECE137A class notes, UCSB, Mark Rodwell, copyright 2019

Parallel RLC Resonance: Analysis

ECE137A class notes, UCSB, Mark Rodwell, copyright 2019

Parallel RLC Resonance: Frequency Reponse

ECE137A class notes, UCSB, Mark Rodwell, copyright 2019

Bode Plot of Resonance

ECE137A class notes, UCSB, Mark Rodwell, copyright 2019

Poles, Zeros

ECE137A class notes, UCSB, Mark Rodwell, copyright 2019

Poles, Zeros

ECE137A class notes, UCSB, Mark Rodwell, copyright 2019

Root Constellation

ECE137A class notes, UCSB, Mark Rodwell, copyright 2019

Root Constellation: For Underdamped System

21 where nd

1dnp js 2,1

22 /)/2(1

)/2()(

nn

n

ss

ssH

ECE137A class notes, UCSB, Mark Rodwell, copyright 2019

Root Constellation: For Overdamped System

1

complex. is 1then

,1 ifbut

2

nd

dnp js 2,1

11

use then ,1 If

22

nnd jj

1

So

2

2,1

nn

dnp js

ECE137A class notes, UCSB, Mark Rodwell, copyright 2019

Root Constellation: For Overdamped System

1

1 2

2,1

nn

dnp js

22 /)/2(1

)/2()(

nn

n

ss

ssH

ECE137A class notes, UCSB, Mark Rodwell, copyright 2019

Root Constellation and Frequency Response: Complex Poles

? peaks thehavefunction transfer thedoesWhy

ECE137A class notes, UCSB, Mark Rodwell, copyright 2019

Root Constellation and Frequency Response: Complex Poles

frequency. indicated at the small gets

distance thisbecause peaksfunction transfer The

ECE137A class notes, UCSB, Mark Rodwell, copyright 2019

Quality factor of an Energy Storage Element

ECE137A class notes, UCSB, Mark Rodwell, copyright 2019

Quality factor of an Energy Storage Element

ECE137A class notes, UCSB, Mark Rodwell, copyright 2019

-3 dB (Half-Power) Bandwidth

ECE137A class notes, UCSB, Mark Rodwell, copyright 2019

Series RLC Circuit

ECE137A class notes, UCSB, Mark Rodwell, copyright 2019

Another Resonant Circuit

ECE137A class notes, UCSB, Mark Rodwell, copyright 2019

Another Resonant Circuit

ECE137A class notes, UCSB, Mark Rodwell, copyright 2019

Low-Pass, 2nd-Order Filters

ECE137A class notes, UCSB, Mark Rodwell, copyright 2019

Band-Pass 2nd-Order Filters

ECE137A class notes, UCSB, Mark Rodwell, copyright 2019

High-Pass 2nd-Order Filters

ECE137A class notes, UCSB, Mark Rodwell, copyright 2019

Impulse Response

ECE137A class notes, UCSB, Mark Rodwell, copyright 2019

Impulse Response

ECE137A class notes, UCSB, Mark Rodwell, copyright 2019

Impulse Response

ECE137A class notes, UCSB, Mark Rodwell, copyright 2019

Step Response of 2nd Order Systems

? response step thebe What would

ECE137A class notes, UCSB, Mark Rodwell, copyright 2019

Step Response of 2nd Order Systems

ECE137A class notes, UCSB, Mark Rodwell, copyright 2019

Step Response of 2nd Order Systems

ECE137A class notes, UCSB, Mark Rodwell, copyright 2019

Low-Pass, 2nd-Order Filters: Its step response:

So:

ECE137A class notes, UCSB, Mark Rodwell, copyright 2019

Low-Pass, 2nd-Order Filters: Its step response:

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