+ Post New Thread
Results 1 to 2 of 2
  1. #1
    Full Member level 3
    Points: 995, Level: 7

    Join Date
    Jan 2018
    Posts
    157
    Helped
    1 / 1
    Points
    995
    Level
    7

    How to make image impedance equal

    Hi, In Microwave engineering by Pozar, for constant K-filters it was said that
    Zi1 = input impedance at port 1 when port 2 is terminated with Zi2 .

    I would like to know

    (1).Is it also true that the input impedance at port 1 is Zi2 if the port 2 is terminated with Zi1?
    2.How to make the input impedance looking into port 1 is 50 ohm, when port 2 is terminated with 50 ohm and vice versa ( input impedance looking into port 2 is 50 ohm, when port 1 is terminated with 50 ohm)?. I think I should use the ZiT formula shown in below figure but for that I need to whether (1) is true.

    Click image for larger version. 

Name:	image_impedance.JPG 
Views:	9 
Size:	26.4 KB 
ID:	154398

    •   AltAdvertisement

        
       

  2. #2
    Super Moderator
    Points: 258,502, Level: 100
    Awards:
    1st Helpful Member

    Join Date
    Jan 2008
    Location
    Bochum, Germany
    Posts
    45,129
    Helped
    13719 / 13719
    Points
    258,502
    Level
    100

    Re: How to make image impedance equal

    Suggest to read the section 8.2 up to the posted snippet more thoroughly. Your questions are already answered in the text. Look from where they are analyzing symmetric networks (Zi1 = Zi2).


    1 members found this post helpful.

--[[ ]]--