Continue to Site

Eng-Tips is the largest engineering community on the Internet

Intelligent Work Forums for Engineering Professionals

  • Congratulations cowski on being selected by the Eng-Tips community for having the most helpful posts in the forums last week. Way to Go!

Recent content by Johnym

  1. Johnym

    Another circular polarization question - backscatter

    Thanks pstuckey, but I dont at all understand why horizontal and vertical polarization will experience different phase shifts if they are both propagating normal to the refecting surface. Although, assuming the convention that the polarization sense is defined by the direction of rotation as...
  2. Johnym

    Another circular polarization question - backscatter

    Hello, I am confused as to what happens to a circularly polarized wave when it encounters a perfect conductor and is scattered back to the transmitter. I have always just accepted that if the number of "bounces" it undergoes is odd (say it's reflected from a perfectly conducting flat plate or a...
  3. Johnym

    Circular polarization transmission/reception

    So, Higgler, what you are saying is if I put two identical H polarized horns (one Tx and One Rx) on an antenna range facing one another, I could measure the phase difference between the transmit and receive with a network analyzer for instance and use this phase difference as a reference. If I...
  4. Johnym

    Circular polarization transmission/reception

    I have really been struggling with this one: I have read that in a data link for instance, where there is a transmit antenna at one end of the link and a receive antenna at the other end, if CP is used, you want to employ antennae of the same polarization sense. I came up with a simple...

Part and Inventory Search