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:
Feb. 08, 2005
Filed:
Aug. 23, 2002
Nicolaos G. Alexopoulos, Santa Monica, CA (US);
Harry Contopanagos, Santa Monica, CA (US);
Chryssoula Kyriazidou, Santa Monica, CA (US);
Nicolaos G. Alexopoulos, Santa Monica, CA (US);
Harry Contopanagos, Santa Monica, CA (US);
Chryssoula Kyriazidou, Santa Monica, CA (US);
Broadcom Corporation, Irvine, CA (US);
Abstract
An antenna includes a magnetic interface generator that generates a magnetic interface at a center frequency f. The magnetic interface generator is a passive array of spirals that are deposited on one layer of a multi-layer substrate. The magnetic interface is generated in a plane at a distance Z above the surface of the substrate layer that it is printed on, where the antenna in printed on a second layer of the multi-layer substrate. The distance Z where the magnetic interface is created is determined by the cell size of the spiral array, where the cell size is based on the spiral arm length and the spacing S between the spirals. The center frequency of the magnetic interface is determined by the average track length Dof the spirals in the spiral array. The spacing S of the spiral array is chosen to project the magnetic interface to the second layer in the multi-layer substrate so as to improve performance of the antenna that printed on the second layer. The magnetic interface can be used to increase the gain, matching, and bandwidth of a microstrip patch antenna, or other type of antenna.