Having a project about microwave engineering course

Discussion in 'Homework Help' started by Darknight7, Jan 1, 2013.

  1. Darknight7

    Thread Starter New Member

    May 21, 2012
    20
    0
    Please help us about our project homework;
    Here is the question;

    Design a five section high pass lumped element filter with 1 dB equal-ripple response, a cut-off frequency of 1 GHz and an impedance of 50 Ohms. Plot the amplitude and phase response of the filter. Obtain microstrip realization for a dilecetric material of εr=9 and thickness 0.5 mm.

    What are the whole steps which toolbox should we use matlab sth. please show us the steps and help us to find the solutions ?
     
  2. bertus

    Administrator

    Apr 5, 2008
    15,652
    2,348
  3. Papabravo

    Expert

    Feb 24, 2006
    10,180
    1,800
    What you need for an equal ripple response is a Chebyshev filter. There are tables available that give component values for a lumped element low pass filter with a corner frequency of 1 radian per second. This prototype filter is then scaled up to the frequency of interest.

    You can also transform the prototype low pass filter to a high pass, bandpass, or band stop filter (aka Notch filter).

    All this and more is contained in van Valkenburg,Analog Filter Design
    or online at
    http://www.engr.uky.edu/~gedney/courses/ee521/notes/Set5_LadderFilterAndPuff.pdf
    http://www.rfcafe.com/references/electrical/cheby-proto-values.htm

    Can't help with Matlab. I use Excel and LTSpice for this stuff.
     
Loading...