Patents by Inventor Hjalti Hreinn Sigmarsson

Hjalti Hreinn Sigmarsson 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).

  • Tunable evanescent-mode cavity filter
    Patent number: 9024709
    Abstract: A tunable filter having an electronically tunable center frequency and dynamic bandwidth control over a large tuning range. High-Q continuously tunable evanescent-mode cavity resonators and filters using reliable RF MEMS actuators. One embodiment is a 3.4-6.2 GHz (1.8:1 tuning ratio) continuously tunable electrostatic MEMS resonator with quality factor of 460-530, with a volume of 18×30×4 mm including the actuation scheme and biasing lines. A tunable resonators is also disclosed with a 2.8:1 (5.0-1.9 GHz) tuning ratio, and Q of 300-650.
    Type: Grant
    Filed: October 3, 2009
    Date of Patent: May 5, 2015
    Assignee: Purdue Research Foundation
    Inventors: Himanshu Joshi, Hjalti Hreinn Sigmarsson, Dimitrios Peroulis, William J. Chappell, Xiaoguang Liu
  • TUNABLE EVANESCENT-MODE CAVITY FILTER
    Publication number: 20110241802
    Abstract: A tunable filter having an electronically tunable center frequency and dynamic bandwidth control over a large tuning range. High-Q continuously tunable evanescent-mode cavity resonators and filters using reliable RF MEMS actuators. One embodiment is a 3.4-6.2 GHz (1.8:1 tuning ratio) continuously tunable electrostatic MEMS resonator with quality factor of 460-530, with a volume of 18×30×4 mm including the actuation scheme and biasing lines. A tunable resonators is also disclosed with a 2.8:1 (5.0-1.9 GHz) tuning ratio, and Q of 300-650.
    Type: Application
    Filed: October 3, 2009
    Publication date: October 6, 2011
    Inventors: Himanshu Joshi, Hjalti Hreinn Sigmarsson, Dimitrios Peroulis, William J. Chappell, Xiaoguang Liu