# US 2014/0191912 A1 · Antenna For A Wearable Device > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 2014/0191912 A1 - Document ID: US20140191912A1 - Status: Published application - Kind: A1 - Application number: 14/011,352 - Filed: 2013-08-27 - Published: 2014-07-10 - Earliest claimed: 2013-01-04 - Assignees: Filip Technologies UK Ltd. - Applicants: Filip Technologies UK Ltd. - Inventors: William H. Darden, IV; Kenneth Hogue; Anders Broms; Owen Lewis Joyce; Jeffrey Lick; Paal Selnaes - Web page: https://patentgrep.com/patent/US20140191912A1 ## CPC - H01Q 1/273: {Adaptation for carrying or wearing by persons or animals} - H01Q 1/38: formed by a conductive layer on an insulating support {(patch antennas H01Q9/0407; microstrip dipole antennas H01Q9/065; microstrip slot antennas H01Q13/106; transmission line microstrip antennas H01Q13/206; manufacturing reflecting surfaces using insulating material for supporting the reflecting surface H01Q15/142)} - H01Q 5/371: Branching current paths - H01Q 9/42: with folded element, the folded parts being spaced apart a small fraction of the operating wavelength - H01Q: ANTENNAS, i.e. RADIO AERIALS (radiators or antennas for microwave heating H05B6/72) ## Abstract This disclosure relates to antennas for wearable devices. in an aspect, the antenna includes an active portion that includes conductive traces that send and receive radiofrequency communication signals. The antenna also includes a ground plane. The antenna includes a spacer that provides separation between the active portion and the ground plane portion. ## Claims ### Claim 1 An antenna for a wearable device, comprising: an active portion comprising conductive traces configured to send and receive radiofrequency communication signals; a ground plane portion; and a spacer between the active portion and the ground plane portion, the spacer configured to provide separation between the active portion and the ground plane portion. ### Claim 2 (depends on 1) The antenna of claim 1, wherein the spacer is comprised of a dielectric material. ### Claim 3 (depends on 1) The antenna of claim 1, wherein the spacer comprises a cavity. ### Claim 4 (depends on 3) The antenna of claim 3, wherein the cavity comprises air. ### Claim 5 (depends on 1) The antenna of claim 1, wherein the spacer comprises an inside surface and an outside surface, the inside surface disposed toward a body, and the outside surface disposed away from a body. ### Claim 6 (depends on 5) The antenna of claim 5, wherein the antenna is mounted on the spacer such that the active portion is substantially disposed on the outside surface and the ground plane portion is substantially disposed on the inside surface. ### Claim 7 (depends on 1) The antenna of claim 1, wherein the wearable device is configured to be worn on a wrist. ### Claim 8 (depends on 1) The antenna of claim 1, wherein the antenna comprises a flexible printed circuit. ### Claim 9 (depends on 1) The antenna of claim 1, further comprising a band configured to be worn on the body, the band further comprising the active portion, the ground plane portion, and the spacer. ### Claim 10 A wearable radiofrequency device, comprising: a band configured to allow the device to be worn, the band comprising an antenna, the antenna further comprising: an active portion comprising conductive traces configured to send and receive radiofrequency communication signals; a ground plane portion; and a spacer between the active portion and the ground plane portion, the spacer configured to provide separation between the active portion and the ground plane portion. ### Claim 11 (depends on 10) The wearable radiofrequency device of claim 10, wherein the spacer comprises a dielectric material. ### Claim 12 (depends on 10) The wearable radiofrequency device of claim 10, wherein the spacer comprises a cavity. ### Claim 13 (depends on 12) The wearable radiofrequency device of claim 12, wherein the cavity comprises air. ### Claim 14 (depends on 10) The wearable radiofrequency device of claim 10, wherein the spacer comprises an inside surface and an outside surface, the inside surface disposed toward a body, and the outside surface disposed away from a body. ### Claim 15 (depends on 14) The wearable radiofrequency device of claim 14, wherein the antenna is mounted on the spacer such that the active portion is substantially disposed on the outside surface and the ground plane is substantially disposed on the inside surface. ### Claim 16 (depends on 10) The wearable radiofrequency device of claim 10, wherein the wearable device is configured to be worn on a wrist. ### Claim 17 An antenna assembly for a wearable radiofrequency device, comprising: a flexible printed circuit antenna comprising: an active portion comprising conductive traces configured to send and receive radiofrequency communication signals; and a ground plane portion; a spacer configured to provide separation between the active portion and the ground plane portion, the spacer comprising: an inside surface configured to be disposed toward a body when the wearable device is worn; and an outside surface configured to be disposed away from a body when the wearable device is worn; the flexible printed circuit antenna coupled to the spacer such that the active portion is substantially disposed on the outside surface, and the ground plane portion is substantially disposed on the inside surface. ### Claim 18 (depends on 17) The antenna assembly of claim 17, further comprising a band configured to be worn around a portion of a body. ### Claim 19 (depends on 18) The antenna assembly of claim 18, wherein the band is configured to be worn around the wrist. ### Claim 20 (depends on 17) The antenna assembly of claim 17, wherein the spacer comprises a dielectric material.