Systems and methods for incorporating a patch antenna in an implantable medical device
Systems and methods for an implantable medical device which utilizes a patch antenna for communicating with an external device. The implantable medical device includes a housing, a header, and a patch antenna formed using an RF plate and a ground plate, which may be or include a metal surface of the housing. Also, a material of the header forms a dielectric of the patch antenna.
1. An implantable medical device comprising: a header connector assembly comprising a connector assembly and a header enclosing the connector assembly; a housing coupled to the header connector assembly and comprising a metal surface, the housing enclosing electronics for the implantable medical device; and a patch antenna enclosed by the header and comprising an RF plate and a ground plate, wherein: a material forming the header serves as a dielectric of the patch antenna, an extension member electrically coupled to the metal surface forms the ground plate, and a portion of the extension member adjacent the metal surface extends perpendicular to a planar orientation of the metal surface, and wherein the portion of the extension member forming the ground plate forms a first ground plate and the metal surface forms a second ground plate, the RF plate sandwiched between the first ground plate and the second ground plate.
2. The implantable medical device of claim 1 , wherein the extension member projects from the metal surface.
3. The implantable medical device of claim 1 , further comprising a feedthru flange coupled to the housing and electrically connected to the metal surface, the extension member coupled to and extending from the feedthru flange.
4. The implantable medical device of claim 3 , wherein a portion of the extension member forming the ground plate forms a first ground plate and the feedthru flange forms a second ground plate.
5. The implantable medical device of claim 1 , wherein each of the RF plate and a portion of the extension member forming the ground plate are oriented parallel to the planar orientation of the metal surface.
6. The implantable medical device of claim 1 , wherein the patch antenna communicates in a Bluetooth frequency band contained within 2.40 to 2.48 GHz.
7. The implantable medical device of claim 1 , wherein the dielectric material includes at least one of a thermosetting polymer, an epoxy, thermoplastic, polyurethane, tecothane, pellethane, silicone, acrylic or bionate.