Patent ID: 9543650
Date: 2017-01-10
CPC Classifications: H01Q

Claim:
1. An antenna system comprising: a parasitic loop antenna formed as a conductive track on a dielectric substrate having first and second opposed surfaces, the dielectric substrate having a first ground point and a second ground point adjacent to each other on the first surface of the dielectric substrate, the conductive track being formed on the dielectric substrate and having a first arm and a second arm, the first arm being formed on the dielectric substrate and following a first path starting at the first ground point, extending toward a first edge of the dielectric substrate, extending to the second surface of the dielectric substrate, extending across the second surface of the dielectric substrate along a second path, and connecting to a conductive loading plate, and a second arm formed on the dielectric substrate and following a third path starting at the second ground point, extending toward a second edge of the dielectric substrate, extending to the second surface of the dielectric substrate, extending across the second surface of the dielectric substrate along a fourth path, and connecting to the conductive loading plate, the conductive loading plate being formed on the second surface of the dielectric substrate and extending into a central part of a loop formed by the conductive track on the second surface of the dielectric substrate; and a separate, directly driven antenna configured to excite the parasitic loop antenna.