05861019 is referenced by 475 patents and cites 16 patents.

A microstrip RF telemetry antenna is formed on or within the exterior surface of an implantable medical device housing that is formed either of a conductive metal or of a non-conductive dielectric material. The microstrip antenna is formed of an electrically conductive radiator patch layer that is laminated upon an exterior facing side of a dielectric substrate layer of relatively constant thickness. A conductive ground plane layer is formed on the opposite side of the dielectric substrate layer to extend parallel to and at least coextensively with the radiator patch layer. The radiator patch layer is coupled to the transceiver circuitry within the implantable medical device housing by a feedthrough extending through the dielectric substrate layer, the ground plane layer and the implantable medical device housing side wall. If the implantable medical device housing is conductive it may form the ground plane layer over which the dielectric substrate layer and the radiator patch layer are formed through deposition or other techniques. If the implantable medical device housing is formed of a suitable non-conductive dielectric material, the ground plane layer is formed on an interior surface thereof and the radiator patch layer is formed on an exterior housing surface thereof, preferably by deposition techniques. The ground plane layer may be recessed to form a cavity backed ground plane that receives the dielectric layer and radiator patch layer within the cavity. The exterior surfaces of the radiator patch layer, the dielectric layer and any exposed surface of the ground plane layer may be electrically insulated by a radome layer.

Title
Implantable medical device microstrip telemetry antenna
Application Number
8/900624
Publication Number
5861019
Application Date
July 25, 1997
Publication Date
January 19, 1999
Inventor
Garry L Dublin
Maple Grove
MN, US
Gregory J Haubrich
Champlin
MN, US
Weimin Sun
Plymouth
MN, US
Agent
Harold R Patton
Thomas F Woods
Assignee
Medtronic
MN, US
IPC
H04B 1/38
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