# US 10,122,090 B2 · Anntena configurations for wireless devices > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 10,122,090 B2 - Document ID: US10122090B2 - Status: Granted - Kind: B2 - Application number: 14/977,062 - Filed: 2015-12-21 - Published: 2017-06-22 - Granted: 2018-11-06 - Earliest claimed: 2015-12-21 - Assignees: Google Inc. - Applicants: Google Inc. - Inventors: Peter Bevelacqua; Paul Biggins - Web page: https://patentgrep.com/patent/US10122090B2 ## CPC - H01Q 9/0407: {Substantially flat resonant element parallel to ground plane, e.g. patch antenna (dipole H01Q9/285; monopole H01Q9/40)} - H01Q 1/005: {Damping of vibrations; Means for reducing wind-induced forces} - H01Q 1/36: Structural form of radiating elements, e.g. cone, spiral, umbrella; {Particular materials used therewith}(H01Q1/08, H01Q1/14 take precedence) - 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 5/364: Creating multiple current paths - H01Q 5/371: Branching current paths - H01Q 9/40: Element having extended radiating surface - H01Q 1/243: {with built-in antennas} - H01Q 1/48: Earthing means; Earth screens; Counterpoises - H01Q: ANTENNAS, i.e. RADIO AERIALS (radiators or antennas for microwave heating H05B6/72) ## Abstract A wireless device can include an antenna element, a printed circuit board, an antenna feed, a conductive surface, and a conductive connector. The printed circuit board can have a ground plane. The antenna feed can be connected, at a first point, to the antenna element and to the ground plane. The conductive surface can be disposed substantially parallel to the ground plane. The conductive connector can be connected, at a second point, to the ground plane and to the conductive surface. A distance between the first point and the second point can be substantially equal to one quarter of a wavelength of an electromagnetic wave to be exploited by the wireless device. At all other points, the ground plane and the conductive surface can lack a conductive connection between the ground plane and the conductive surface. ## Claims ### Claim 1 A wireless device, comprising: a printed circuit board having a ground plane; a power cord having a connector configured to connect, at a first point, the power cord to the ground plane of the printed circuit board, a function of the power cord being to provide electrical supply power to the wireless device; a ground extension disposed on or within a housing of the wireless device and connected, at a second point, to the ground plane of the printed circuit board, the second point substantially opposite the first point, wherein a ground plane of an antenna of the wireless device comprises the ground plane of the printed circuit board, the power cord, the connector, and the ground extension; and an antenna feed connected, at a third point, to an antenna element and to the ground plane of the printed circuit board, a distance between the third point and the first point substantially equal to a distance between the third point and the second point. ### Claim 2 (depends on 1) The wireless device of claim 1, wherein the wireless device is a wireless hub. ### Claim 3 (depends on 2) The wireless device of claim 2, wherein the wireless hub is a component of a premises management system. ### Claim 4 (depends on 3) The wireless device of claim 3, wherein the premises management system includes a security system. ### Claim 5 (depends on 1) The wireless device of claim 1, wherein the power cord is a Universal Serial Bus™ cable. ### Claim 6 (depends on 1) The wireless device of claim 1, wherein the ground extension comprises a conductive sheet. ### Claim 7 (depends on 6) The wireless device of claim 6, wherein the conductive sheet has a length, a width, and a thickness, the width being substantially equal to a diameter of the power cord. ### Claim 8 (depends on 7) The wireless device of claim 7, wherein the conductive sheet includes a first portion disposed along a top of the wireless device and a second portion disposed along a side of the wireless device. ### Claim 9 (depends on 8) The wireless device of claim 8, wherein the length of the conductive sheet is equal to a sum of a length of the first portion added to a length of the second portion. ### Claim 10 (depends on 1) The wireless device of claim 1, further comprising a holder configured to hold a battery such that, when the battery is held in the holder, a length of the battery is substantially parallel to a plane perpendicular to a line formed by the first point and the second point. ### Claim 11 (depends on 1) The wireless device of claim 1, wherein the antenna is configured to radiate electromagnetic power at a greater efficiency than an antenna having a ground plane that excludes the ground extension. ### Claim 12 (depends on 1) The wireless device of claim 1, wherein the antenna is configured to radiate electromagnetic power over a bandwidth that is larger than a bandwidth of an antenna having a ground plane that excludes the ground extension. ### Claim 13 (depends on 1) The wireless device of claim 1, wherein the wireless device is a wireless access point. ### Claim 14 (depends on 1) The wireless device of claim 1, wherein the wireless device is a wireless gateway. ### Claim 15 (depends on 1) The wireless device of claim 1, wherein the ground extension is configured to provide a conductive path opposite of a conductive path provided by the power cord. ### Claim 16 (depends on 15) The wireless device of claim 15, wherein the conductive path provided by the ground extension is configured to act to undo a bias, toward the power cord, in a current in the ground plane of the antenna. ### Claim 17 (depends on 1) The wireless device of claim 1, wherein the wireless device has a substantially cylindrical shape. ### Claim 18 A wireless device, comprising: a power cord having a connector configured to connect, at a first point, the power cord to a ground plane, a function of the power cord being to provide electrical supply power to the wireless device; a ground extension disposed on or within a housing of the wireless device and connected, at a second point, to the ground plane, the second point substantially opposite the first point; and an antenna feed connected, at a third point, to an antenna element and to the ground plane, a distance between the third point and the first point substantially equal to a distance between the third point and the second point. ### Claim 19 A wireless device, comprising: a power cord having a connector configured to connect, at a first point, the power cord to a ground plane, a function of the power cord being to provide electrical supply power to the wireless device; a ground extension disposed on or within a housing of the wireless device and connected, at a second point, to the ground plane, the second point substantially opposite the first point; a holder configured to hold a battery such that, when the battery is held in the holder, a length of the battery is substantially parallel to a plane perpendicular to a line formed by the first point and the second point; and an antenna feed connected, at a third point, to an antenna element and to the ground plane, a distance between the third point and the first point substantially equal to a distance between the third point and the second point.