The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jul. 31, 2007
Filed:
Jun. 22, 2004
Applicants:
John A. Higgins, Westlake Village, CA (US);
Hao Xin, Tucson, AZ (US);
Inventors:
John A. Higgins, Westlake Village, CA (US);
Hao Xin, Tucson, AZ (US);
Assignee:
Teledyne Licensing, LLC, Thousand Oaks, CA (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H01P 1/207 (2006.01); H01P 1/20 (2006.01);
U.S. Cl.
CPC ...
Abstract
A filter includes a waveguide with at least one impedance structure with a resonant frequency. The impedance structure is positioned in the waveguide to reflect signals at the resonant frequency. The filter can be tunable by including variable capacitance devices in the impedance structure(s) so that the resonant frequency can be adjusted.