Patent ID: 6052097
Filing Date: 2000-04-18
Classification: A01K,H01Q

Abstract:
An antenna system for a receiver circuit, comprising:(a) a conductive antenna mounting connector for detachable connection of an external antenna to the receiver circuit;(b) a ferrite core;(c) a first winding having a first number of turns about the ferrite core, a first terminal coupled to an antenna input terminal of the receiver circuit, and a second terminal coupled to a first ground conductor;(d) a second winding adjacent to the first winding and having a second number of turns about the ferrite core, a first terminal coupled to the conductive antenna mounting connector, and a second terminal coupled to a second ground conductor;(e) the first winding functioning as a ferrite antenna; and(f) the first and second windings together functioning as a matching transformer coupled between the receiver antenna input terminal of the receiver circuit and an external antenna connected to the antenna mounting connector.