Hearing aid antenna for high-frequency data communication
Hearing aids having example antennas tuned to transmit and receive signals having a frequency greater than or equal to 2.4 GHz are described. The antenna includes a first segment and a second segment. The first segment is configured to fit inside a housing of the hearing aid and to be within the ear canal when the hearing aid is inserted into an ear of a wearer. The second segment is configured to be within the housing and disposed near a side of the housing facing toward an outside of the ear canal when the hearing aid is inserted into the ear of the wearer.
1. A hearing aid comprising:
a housing configured to fit inside an ear canal;
an antenna within the housing, the antenna comprising:
a first segment configured to fit inside the housing and to be within the ear canal when the hearing aid is inserted into an ear of a wearer, the first segment having a first end and a second end, and the second end being open ended;
a second segment configured to be within the housing and disposed near a side of the housing facing toward an outside of the ear canal when the hearing aid is inserted into the ear of the wearer, the second segment having a third end and a fourth end, and the fourth end being open ended; and
a transmission line;
wherein the first end of the first segment and the third end of second segment are coupled to the transmission line,
wherein the first segment is substantially orthogonal to the second segment, and
wherein the antenna, that includes the first segment and the second segment, is tuned to transmit and receive signals having a frequency equal to or greater than 2.4 GHz; and
circuitry, within the housing, coupled to the antenna via the transmission line and configured to transmit the signals to the antenna and receive the signals from the antenna.
2. The hearing aid of claim 1 , wherein the second segment is configured to extend around a periphery of the housing.
3. The hearing aid of claim 1 , wherein the first segment is shorter than the second segment.
4. The hearing aid of claim 1 , wherein the first segment and the second segment are in different environments having different dielectric constants when the hearing aid is inserted in the ear of the wearer.
5. The hearing aid of claim 1 , wherein the first segment is approximately 0.5 cm, and the second segment is approximately 3 cm.
6. The heading aid of claim 1 , wherein the first segment is within a range of 0.4 cm and 0.6 cm, and the second segment is within a range of 2 cm and 4 cm.
7. The hearing aid of claim 1 , wherein the first segment is configured in a helix shape such that an impedance of the antenna is closer to an impedance of the circuitry coupled to the antenna as compared to if the first segment had a linear shape.
8. The hearing aid of claim 1 , wherein the second segment is configured to curve around an internal perimeter of the housing.
9. The hearing aid of claim 1 , wherein the second segment is configured in a shape comprising one of a circular shape, a spiral shape, or a serpentine shape.
10. The hearing aid of claim 1 , further comprising a battery positioned inside the housing in a manner to reflect signals transmitted from the antenna.
11. The hearing aid of claim 1 , wherein the antenna of the hearing-aid is configured to transmit and receive signals having a frequency within a frequency band of 2.4 to 2.483 GHz.
12. A method of manufacturing a hearing aid, the method comprising:
forming a first segment of an antenna of the hearing aid to fit inside a housing of the hearing aid and to be within an ear canal when the hearing aid is inserted into an ear of a wearer the first segment having a first end and a second end, and the second end being open ended;
forming a second segment of the antenna of the hearing aid to be within the housing and disposed near a side of the housing facing toward an outside of the ear canal when the hearing aid is inserted into the ear of the wearer, the second segment having a third end and a fourth end, and the fourth end being open ended;
forming a transmission line; and
coupling the first end of the first segment and the third end of the second segment to the transmission line,
wherein the first segment is substantially orthogonal to the second segment, and
wherein the antenna, that includes the first segment and the second segment, is tuned to transmit and receive signals having a frequency equal to or greater than 2.4 GHz; and
coupling, via the transmission line, the antenna to circuitry within the housing that is configured to transmit the signals to the antenna and receive the signals from the antenna.
13. The method of claim 12 , wherein the second segment is configured to extend around a periphery of the housing.
14. The method of claim 12 , wherein the first segment is shorter than the second segment.
15. The method of claim 12 , wherein the first segment and the second segment are in different environments having different dielectric constants when the hearing aid is inserted in the ear of the wearer.
16. The method of claim 12 , wherein forming the first segment comprises forming the first segment to be within a range of 0.4 cm and 0.6 cm, and wherein forming the second segment comprises forming the second segment to be within a range of 2 cm and 4 cm.
17. The method of claim 12 , wherein forming the first segment comprises forming the first segment in a helix shape such that an impedance of the antenna is closer to an impedance of the circuitry coupled to the antenna as compared to if the first segment had a linear shape.
18. The method of claim 12 , wherein forming the second segment comprises forming the second segment to have a shape comprising one of a circular shape, a spiral shape, or a serpentine shape.
19. The method of claim 12 , further comprising positioning a battery inside the housing in a manner to reflect signals transmitted from the antenna.
20. The method of claim 12 , wherein the antenna of the hearing aid is configured to transmit and receive signals having a frequency within a frequency band of 2.4 to 2.483 GHz.