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:
May. 30, 2006
Filed:
Aug. 11, 2004
Steven S. Chan, Alhambra, CA (US);
Te Kao Wu, Rancho Palos Verdes, CA (US);
Arun Bhattacharyya, El Segundo, CA (US);
Juan Rivera, Torrance, CA (US);
Phillip L. Metzen, Hermosa Beach, CA (US);
Steven S. Chan, Alhambra, CA (US);
Te Kao Wu, Rancho Palos Verdes, CA (US);
Arun Bhattacharyya, El Segundo, CA (US);
Juan Rivera, Torrance, CA (US);
Phillip L. Metzen, Hermosa Beach, CA (US);
Northrop Grumman Corporation, Los Angeles, CA (US);
Abstract
A phased array antenna structure capable of operation at millimeter-wave frequencies and having multiple ring slot radiator elements (). The RF feed structure for each radiator element includes a feed via () extending part-way through a multi-layer structure () on which the radiator elements () are formed and a strip line feed probe () extending from the via () toward the radiator element. A key feature facilitating high-frequency operation is the inclusion of multiple mode suppressors () surrounding the via () and providing a smooth transition from a coaxial mode of RF transmission to a strip line mode of RF transmission. The feed probe () is tailored to provide either a narrow-band or a wideband frequency characteristic.