An implantable medical device (IMD) antenna and methods of fabricating the same are provided. An IMD can include a ceramic structure having at least one wall defining a hollow cavity. The ceramic structure can include a first end and a second end distal from the first end, the first and second ends being open to provide access to the hollow cavity. The IMD also includes an antenna cofire-integrated into the at least one wall of the ceramic structure and a housing adjoined to the ceramic structure.
