hybrid coupler characteristic impedance

Discussion in 'General Electronics Chat' started by erumai, Oct 2, 2007.

  1. erumai

    Thread Starter New Member

    Sep 28, 2007
    Hi friends,

    Do any one of you know why we use a 71 ohm characteristic impedance networks in a hybrid coupler to couple 50 ohms input and outputs?
  2. hon

    New Member

    Jun 22, 2006
    You really should look up a book on transmission lines or microwave engineering book to get details. But simply, it is related to 1/4 wavelength transmission line property and matching between 50 ohm inputs.

    Book by Pozar talks about this.