Patent ID: 7443362
Filing Date: 2008-10-28
Classification: G06K

Abstract:
1. A solenoid antenna comprising: a first set of circuit traces formed on a first side of a substrate; a second set of circuit traces formed on a second side of the substrate; and a set of vias formed through the substrate to electrically connect the first set of circuit traces to the second set of circuit traces, wherein the first set of circuit traces, the second set of circuit traces and the set of vias collectively define an electrically conductive path of the solenoid antenna, and wherein the electrically conductive path defines a coil such that when an electrical current flows through the coil an electromagnetic field is created, wherein the set of vias comprises a first set of vias and the electrically conductive path comprises a first electrically conductive path, the solenoid antenna further comprising a third set of circuit traces, a fourth set of circuit traces, and a second set of vias that electrically connect the third set of circuit traces to the fourth set of circuit traces, wherein the third set of circuit traces, the fourth set of circuit traces and the second set of vias define a second electrically conductive path, wherein the first electrically conductive path is connected to the second electrically conductive path to define the solenoid antenna as a multi-winding solenoid antenna.