1. Limited time only! Sign up for a free 30min personal tutor trial with Chegg Tutors
    Dismiss Notice
Dismiss Notice
Join Physics Forums Today!
The friendliest, high quality science and math community on the planet! Everyone who loves science is here!

Homework Help: Bode Plots & High Pass, Low Pass, Band Stop and Pass Frequen

  1. Feb 20, 2016 #1
    1. The problem statement, all variables and given/known data

    I just need some confirmation on 3 questions

    H(s) = 1/(s+1)^2

    1. I was asked to calculate the poles and zeros. I believe

    zeros: none
    poles: 2 (or p1,2) = -1

    2. I was also asked to calculate the slope of the magnitude response was w -> 0
    Here is my sketched graph

    2016-02-20 20.17.13.jpg

    From my pic, it shows that as w -> 0, H(s) -> 0.

    3. What type of filter response does this network exhibit.
    I believe it will be a Low Pass because as

    s->0, H(s) -> 1 and as s-> infinity, H(s) -> 0?

    Does this reasoning make it a low pass filter, high pass, band stop or band pass?

    Any help is appreciated
  2. jcsd
  3. Feb 20, 2016 #2


    User Avatar
    Science Advisor

    According to your graph, what frequencies pass thru with the least attenuation?
  4. Feb 21, 2016 #3

    rude man

    User Avatar
    Homework Helper
    Gold Member

    Your Bode plot is good, and I can only second TomG's rhetorical question.
Share this great discussion with others via Reddit, Google+, Twitter, or Facebook

Have something to add?
Draft saved Draft deleted