# US 11,114,773 B2 · Devices, systems, and methods for directional antennas that protect sensitive zones > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 11,114,773 B2 - Document ID: US11114773B2 - Status: Granted - Kind: B2 - Application number: 16/730,704 - Filed: 2019-12-30 - Published: 2020-07-02 - Granted: 2021-09-07 - Earliest claimed: 2018-12-28 - Assignees: Flex Ltd. - Applicants: Flex Ltd. - Inventors: Dan Gorcea - Web page: https://patentgrep.com/patent/US11114773B2 ## CPC - H01Q 25/005: {providing two patterns of opposite direction; back to back antennas (H01Q25/004 takes precedence)} - H01Q 1/245: {with means for shaping the antenna pattern, e.g. in order to protect user against rf exposure} - H01Q 1/273: {Adaptation for carrying or wearing by persons or animals} - H04B 1/38: Transceivers, i.e. devices in which transmitter and receiver form a structural unit and in which at least one part is used for functions of transmitting and receiving - H04B 1/3838: {Arrangements for reducing RF exposure to the user, e.g. by changing the shape of the transceiver while in use} - H04R 1/08: Mouthpieces; {Microphones;} Attachments therefor - H04R 1/1008: {Earpieces of the supra-aural or circum-aural type} - H04R 1/1041: {Mechanical or electronic switches, or control elements (switches in general H01H)} - H04R 1/105: {Earpiece supports, e.g. ear hooks (for stereophonic headphones H04R5/0335)} - H04R 1/1075: {Mountings of transducers in earphones or headphones} - H04R 2201/107: Monophonic and stereophonic headphones with microphone for two-way hands free communication - H04R 2225/51: Aspects of antennas or their circuitry in or for hearing aids - H04R 2420/07: Applications of wireless loudspeakers or wireless microphones - H01Q: ANTENNAS, i.e. RADIO AERIALS (radiators or antennas for microwave heating H05B6/72) - H04B: TRANSMISSION - H04R: LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; ELECTRIC HEARING AIDS; PUBLIC ADDRESS SYSTEMS (producing sounds with frequency not determined by supply frequency G10K) ## Abstract A set of headphones include a zone that is sensitive to electromagnetic radiation, a first earpiece including a first directional antenna operable at a first frequency and having a first radiation pattern radiating away from the zone, and a second earpiece including a second directional antenna operable at the first frequency and having a second radiation pattern radiating away from the zone. ## Claims ### Claim 1 Headphones, comprising: a zone that is sensitive to electromagnetic radiation; a first earpiece including a first directional antenna operable at a first frequency and having a first radiation pattern radiating away from the zone; and a second earpiece including a second directional antenna operable at the first frequency and having a second radiation pattern radiating away from the zone. ### Claim 2 (depends on 1) The headphones of claim 1, further comprising: a headband connected between the first earpiece and the second earpiece, wherein the zone is defined by a region between the first earpiece and the second earpiece; a first speaker housed in the first earpiece; and a second speaker housed in the second earpiece. ### Claim 3 (depends on 1) The headphones of claim 1, wherein the first directional antenna and the second directional antenna transceive at one of more frequencies within a range of about 1.4 GHz to about 70 GHz, and wherein the first and second radiation patterns are such that the zone is substantially free of radiation from the first and second directional antennas. ### Claim 4 (depends on 1) The headphones of claim 1, further comprising: a processor that receives signals received by the first directional antenna and the second directional antenna, and that generates signals transmitted by the first directional antenna and the second directional antenna. ### Claim 5 (depends on 4) The headphones of claim 4, wherein the processor operates the first directional antenna and the second directional antenna according to the suite of 802.11 protocols. ### Claim 6 (depends on 1) The headphones of claim 1, wherein the first radiation pattern and the second radiation pattern are such that the zone experiences a specific absorption rate (SAR) of less than 1.6 W/kg. ### Claim 7 (depends on 1) The headphones of claim 1, further comprising: one or more microphones that convert sound external to the headphones into electrical signals. ### Claim 8 (depends on 7) The headphones of claim 7, further comprising: one or more control elements that control functionality of the headphones. ### Claim 9 (depends on 1) The headphones of claim 1, further comprising: one or more additional antennas that operate at one or more frequencies different from the first frequency. ### Claim 10 (depends on 1) The headphones of claim 1, wherein the first radiation pattern and the second radiation pattern are combinable to form an omnidirectional radiation pattern. ### Claim 11 A system, comprising: headphones including: a zone that is sensitive to electromagnetic radiation; a first earpiece including a first directional antenna operable at a first frequency and having a first radiation pattern radiating away from the zone; and a second earpiece including a second directional antenna operable at the first frequency and having a second radiation pattern radiating away from the zone; and a transceiver in communication with the first directional antenna and the second directional antenna. ### Claim 12 (depends on 11) The system of claim 11, wherein the headphones further comprise: a headband connected between the first earpiece and the second earpiece, wherein the zone is defined by a region between the first earpiece and the second earpiece; a first speaker housed in the first earpiece; and a second speaker housed in the second earpiece. ### Claim 13 (depends on 11) The system of claim 11, wherein the transceiver communicates with the first directional antenna and the second directional antenna at one of more frequencies within a range of about 1.4 GHz to about 70 GHz. ### Claim 14 (depends on 11) The system of claim 11, wherein the transceiver further comprises: a processor that combines signals received from the first directional antenna and the second directional antenna, and that generates signals transmitted to the first directional antenna and the second directional antenna. ### Claim 15 (depends on 14) The system of claim 14, wherein the processor communicates with the first directional antenna and the second directional antenna according to the suite of 802.11 protocols. ### Claim 16 (depends on 11) The system of claim 11, wherein the first radiation pattern and the second radiation pattern are such that the zone experiences a negligible specific absorption rate (SAR). ### Claim 17 (depends on 11) The system of claim 11, wherein the headphones further comprise: one or more microphones that convert sound external to the headphones into electrical signals. ### Claim 18 (depends on 17) The system of claim 17, wherein the headphones further comprise: one or more actuator elements that control functionality of the headphones. ### Claim 19 (depends on 11) The system of claim 11, wherein the headphones and the transceiver each further comprise: one or more additional antennas that operate at one or more frequencies different from the first directional antenna and the second directional antenna. ### Claim 20 A device, comprising: a housing including a zone that is sensitive to electromagnetic radiation; a first directional antenna located at a first side of the housing and having a first radiation pattern away from the zone; and a second directional antenna located at a second side of the housing and having a second radiation pattern away from the zone, the second side of the housing being opposite to the first side of the housing.