Patents by Inventor Ulf Folkesson

Ulf Folkesson has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Method and device for measuring the return loss of a radiofrequency signal
    Patent number: 6029051
    Abstract: A method and device for measuring the return loss of a radiofrequency signal at a feeding circuit coupled to a load, wherein the forward power and the reflected power are sensed by a measuring circuit having first and second branches (11, 12) for transferring a derived forward signal and a derived reflected signal, respectively. The return loss is calculated on the basis of the sensed power levels (P1, P2) of the derived signals in the first and second branches. The sensing range of power levels (P2) to be sensed in one branch (12) is adjusted in response to the sensed power level (P1) in the other branch (11), whereby the dynamic range required for power sensing in the measuring circuit is reduced.
    Type: Grant
    Filed: January 15, 1997
    Date of Patent: February 22, 2000
    Assignee: Allgon AB
    Inventors: Magnus Osterberg, Ulf Folkesson, Gunnar Persson