# US 11,444,371 B2 · Antenna for wearable devices > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 11,444,371 B2 - Document ID: US11444371B2 - Status: Granted - Kind: B2 - Application number: 16/260,399 - Filed: 2019-01-29 - Published: 2020-07-30 - Granted: 2022-09-13 - Earliest claimed: 2019-01-29 - Assignees: Google Inc. - Applicants: Google LLC - Inventors: Jiang Zhu; Paul Biggins; Zheyu Wang - Web page: https://patentgrep.com/patent/US11444371B2 ## CPC - H01Q 1/273: {Adaptation for carrying or wearing by persons or animals} - G04G 21/04: using radio waves (radio-controlled time-pieces G04R) - G04G 21/08: Touch switches specially adapted for time-pieces - G04R 60/02: Antennas also serving as components of clocks or watches, e.g. motor coils - G04R 60/06: Antennas attached to or integrated in clock or watch bodies - G04R 60/12: inside metal cases - H01Q 1/521: {reducing the coupling between adjacent antennas} - H01Q 7/00: Loop antennas with a substantially uniform current distribution around the loop and having a directional radiation pattern in a plane perpendicular to the plane of the loop - H01Q 9/40: Element having extended radiating surface - H01Q 9/42: with folded element, the folded parts being spaced apart a small fraction of the operating wavelength - H01Q 21/28: Combinations of substantially independent non-interacting antenna units or systems {(multiple beam H01Q25/00)} - H01Q: ANTENNAS, i.e. RADIO AERIALS (radiators or antennas for microwave heating H05B6/72) - G04G: ELECTRONIC TIME-PIECES - G04R: RADIO-CONTROLLED TIME-PIECES ## Abstract An antenna is provided for a wearable personal computing device, such as a smartwatch. The antenna integrates with other components of the wearable device, such as a second antenna. For example, the first antenna may be a coupled loop antenna in proximity to a second antenna that may be a monopole antenna, without causing interference between the two antennas. In one example, the first antenna shares a common ground with the second antenna. ## Claims ### Claim 1 An antenna, comprising: an inner trace, the inner trace having a first end and a second end; an outer trace, the outer trace having a first end and a second end, the first end of the outer trace positioned adjacent to the second end of the inner trace, and the second end of the outer trace coupled to a feed for the antenna; wherein the inner trace and the outer trace are positioned along a periphery of a wearable device and coupled to a ground; and wherein the antenna is a coupled loop antenna. ### Claim 2 (depends on 1) The antenna of claim 1, wherein the antenna is positioned in proximity to a second antenna of a different type without causing interference between the antenna and the second antenna. ### Claim 3 (depends on 2) The antenna of claim 2, wherein the antenna has a length between one-half and one-fourth of the periphery of the wearable device. ### Claim 4 (depends on 1) The antenna of claim 1, wherein the wearable device is a smartwatch. ### Claim 5 (depends on 1) The antenna of claim 1, wherein the antenna is configured to be coupled to a carrier within the wearable device, the carrier having an inner leg and an outer leg, the outer leg is next to the inner leg, the inner leg and the outer legs connected at an apex by an arcuate surface. ### Claim 6 A wearable device, comprising: a housing shaped to be worn on a human body, the housing having at least one outer surface and an internal cavity, wherein the at least one outer surface of the housing is shaped to come in contact with the human body; a cover configured to enclose the internal cavity of the housing; a carrier, the carrier positioned within the internal cavity of the housing along a periphery of the internal cavity; a first antenna for a first frequency band, the first antenna being a coupled loop antenna attached to the carrier at a first location, the first antenna comprising: an outer trace, the outer trace having a first end and a second end, wherein the first end of the outer trace is coupled to a feed for the first antenna; and an inner trace, the inner trace having a first end positioned adjacent to the second end of the outer trace. ### Claim 7 (depends on 6) The wearable device of claim 6, wherein the carrier has an inner leg and an outer leg, the outer leg is angled towards the inner leg, the inner leg and the outer leg connected at an apex by an arcuate surface. ### Claim 8 (depends on 6) The wearable device of claim 6, wherein the first antenna has a length between one-half and one-fourth of the periphery of the wearable device. ### Claim 9 (depends on 6) The wearable device of claim 6, further comprising a second antenna, the second antenna being a monopole antenna and attached to the carrier at a location in proximity to the first antenna. ### Claim 10 (depends on 9) The wearable device of claim 9, wherein the first antenna and second antenna share a common ground. ### Claim 11 (depends on 10) The wearable device of claim 10, wherein the common ground is the housing. ### Claim 12 A system, comprising: a first antenna for a first frequency band, the first antenna being a coupled loop antenna having an inner trace and an outer trace, the outer trace having a first end coupled to a feed for the first antenna and the inner trace having a first end positioned adjacent to the second end of the outer trace; a second antenna for a second frequency band, the second antenna being a monopole antenna having a first end configured to serve as a feed for the first antenna; and wherein the first and second antennas are positioned along a periphery of a wearable device and coupled to a common ground. ### Claim 13 (depends on 12) The system of claim 12, wherein the first antenna has a length between one-half and one-fourth of the periphery of the wearable device. ### Claim 14 (depends on 12) The system of claim 12, wherein the first antenna is a GPS antenna. ### Claim 15 (depends on 12) The system of claim 12, wherein the wearable device is a smartwatch. ### Claim 16 (depends on 15) The system of claim 15, wherein the smartwatch includes a housing, the housing being insertable into a variety of different watchbands, the variety of different watchbands comprised of a variety of different materials. ### Claim 17 (depends on 12) The system of claim 12, wherein the first antenna is positioned in proximity to the second antenna without causing interference between the first and second antennas. ### Claim 18 (depends on 12) The system of claim 12, wherein the outer trace has a second end and the inner trace has a first end, the second end of the outer trace is positioned adjacent to the first end of the inner trace. ### Claim 19 (depends on 12) The system of claim 12, wherein the first and second antennas are configured to be coupled to a carrier within the wearable device, the carrier having an inner leg and an outer leg, the outer leg is next to the inner leg, the inner leg and the outer legs connected at an apex by an arcuate surface. ### Claim 20 (depends on 1) The antenna of claim 1, wherein the inner trace and the outer trace form separate structures. ### Claim 21 (depends on 20) The antenna of claim 20, wherein the inner trace is aligned with the outer trace without the inner trace and outer trace touching each other.