Patents by Inventor Joelle Ariel

Joelle Ariel 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).

  • Microwave phase shifter circuit
    Patent number: 4967172
    Abstract: Disclosed are microwave phase shifter circuits which achieve phase shifts of elementary values and of whole number multiples of the values. The phase shifter circuit is made by utilizing of strip lines arranged in candlestick form on one face of a substrate and a slot line arranged on the other face. The length of the branches of the candlestick differ by b/4, b being the wavelength, and the ends of the branches are short-circuited or not short-circuited by utilizing of diodes which can be forward biased or reverse biased.
    Type: Grant
    Filed: March 28, 1989
    Date of Patent: October 30, 1990
    Assignee: Thomson-CSF
    Inventors: Joelle Ariel, Jacques Legendre