ANTENNA ON CERAMIC CASE
First Claim
1. A dipole antenna formed on an implantable microdevice, said implantable microdevice having a case, said case being a hollow cylinder having an inner and an outer surface and adapted for housing communications circuitry, said dipole antenna comprising:
- at least two radiating elements, wherein said radiating elements are electrically conducting and are formed on said outer surface; and
wherein said dipole antenna is electrically coupled to said communications circuitry to create a telemetry system for said implantable microdevice.
1 Assignment
0 Petitions
Accused Products
Abstract
The invention is an antenna for use with an implantable microdevice, such as a microstimulator or microsensor, having a dipole antenna that is formed by ceramic processes on the inner or outer surface of the ceramic case of the microdevice. The antenna receives data transmitted from an external device, and transmits data to an external device. A dipole antenna may be formed from two radiating elements separated by an insulating material. A tuning circuit comprising capacitors and/or inductors is used to obtain resonance in the dipole antenna. In a preferred embodiment, the antenna is formed of a biocompatible material by applying a metal-containing paste to the ceramic case of the microdevice and thermally processing it.
-
Citations
23 Claims
-
1. A dipole antenna formed on an implantable microdevice, said implantable microdevice having a case, said case being a hollow cylinder having an inner and an outer surface and adapted for housing communications circuitry, said dipole antenna comprising:
-
at least two radiating elements, wherein said radiating elements are electrically conducting and are formed on said outer surface; and
wherein said dipole antenna is electrically coupled to said communications circuitry to create a telemetry system for said implantable microdevice. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11)
-
-
12. A dipole antenna formed on the outer surface of a case, comprising:
-
a tuning element that is electrically coupled to a radiating element, wherein said tuning element and said radiating element combine to form a resonant circuit;
at least two radiating elements, wherein said radiating elements are electrically conducting and are formed on the outer surface of the case; and
wherein said dipole antenna forms a loop antenna when immersed in electrically conductive living tissue.
-
-
13. A method of forming a dipole antenna on an implantable microdevice, said implantable microdevice having a ceramic case, said ceramic case being a hollow cylinder having an inner and an outer surface and adapted for housing communications circuitry, said method comprising the steps of:
-
selecting at least one radiating element design;
selecting a thick film layer of metal for said radiating element design;
applying said thick film layer of metal containing paste at about 20°
C. to said case in said radiating element design;
drying said thick film layer at 90°
to 130°
C.; and
firing said thick film layer at 900°
to 1200°
C. for 10 to 30 minutes. - View Dependent Claims (14, 15, 16, 17, 18, 19, 20, 21, 22, 23)
-
Specification