# US 10,122,087 B2 · Proximity sensor antenna device and antenna structure thereof > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 10,122,087 B2 - Document ID: US10122087B2 - Status: Granted - Kind: B2 - Application number: 15/433,132 - Filed: 2017-02-15 - Published: 2018-08-16 - Granted: 2018-11-06 - Earliest claimed: 2017-02-15 - Assignees: Auden Techno Corp. - Applicants: Auden Techno Corp. - Inventors: Chia-Lun Tang; Chi-Ming Chiang; Chun-Chuan Chang - Web page: https://patentgrep.com/patent/US10122087B2 ## CPC - H01Q 5/328: between a radiating element and ground - H01Q 1/2291: {used in Bluetooth® or Wi-Fi® devices of Wireless Local Area Networks [WLAN] (H01Q1/241 takes precedence; WLAN in general H04W)} - H01Q 1/243: {with built-in antennas} - H01Q 1/48: Earthing means; Earth screens; Counterpoises - H04B 1/3833: {Hand-held transceivers} - H01Q: ANTENNAS, i.e. RADIO AERIALS (radiators or antennas for microwave heating H05B6/72) - H04B: TRANSMISSION ## Abstract An antenna structure includes a first conductor, a high-frequency blocking unit, and a second conductor. The first conductor includes a feeding segment, a coupling segment spaced apart from the feeding segment, and a DC blocking unit connected between the feeding segment and the coupling segment. The high-frequency blocking unit is connected to the coupling segment. The second conductor is spaced apart from the first conductor and couples with the coupling segment. An end of the second conductor is connected to a ground, and the second conductor is provided without connecting any capacitance member and any inductance member. The coupling segment is used as a capacitor electrode for detecting an external object. When the coupling segment is in a capacitor electrode mode, a capacitance value between the coupling segment and the external object is variable according to a distance between the coupling segment and the external object. ## Claims ### Claim 1 A proximity sensor antenna device, comprising: an antenna structure, comprising: a first conductor having a feeding segment for connecting to a signal feeding cable, a coupling segment spaced apart from the feeding segment, and a direct current (DC) blocking unit connected between the feeding segment and the coupling segment; a high-frequency blocking unit connected to the coupling segment of the first conductor; and a second conductor spaced apart from the first conductor, wherein an end of the second conductor is connected to a ground, and the second conductor is provided without connecting any capacitance member and any inductance member; wherein the coupling segment of the first conductor is selectively in a coupling antenna mode and in a capacitance electrode mode; when the coupling segment is in the coupling antenna mode, the coupling segment is configured to couple with the second conductor through a radiofrequency signal; when the coupling segment is in the capacitance electrode mode, the coupling segment is configured to detect an external object, and a capacitance value between the coupling segment and the external object is variable according to a distance between the coupling segment and the external object; and a proximity sensor electrically connected to the high-frequency blocking unit, wherein the proximity sensor is electrically connected to the coupling segment of the first conductor via the high-frequency blocking unit. ### Claim 2 (depends on 1) The proximity sensor antenna device as claimed in claim 1, wherein the antenna structure includes a first inductance unit and a first expanding electrode segment, one end of the first inductance unit is connected to the coupling segment, and the other end of the first inductance unit is connected to the first expanding electrode segment, so that the coupling segment and the first expanding electrode segment are configured to co-detect the external object when the coupling segment is in the capacitance electrode mode. ### Claim 3 (depends on 2) The proximity sensor antenna device as claimed in claim 2, wherein the antenna structure includes a second inductance unit and a second expanding electrode segment, one end of the second inductance unit is connected to the coupling segment, and the other end of the second inductance unit is connected to the second expanding electrode segment, so that the coupling segment, the first expanding electrode segment, and the second expanding electrode segment are configured to co-detect the external object when the coupling segment is in the capacitance electrode mode. ### Claim 4 (depends on 3) The proximity sensor antenna device as claimed in claim 3, wherein one of the first inductance member and the second inductance member is connected to an end of the coupling segment arranged away from the feeding segment. ### Claim 5 (depends on 1) The proximity sensor antenna device as claimed in claim 1, wherein the DC blocking unit includes two coupling portions spaced apart from each other, the two coupling portions are respectively and integrally connected to the feeding segment and the coupling segment, and the two coupling portions are configured to couple with each other to generate a capacitance effect. ### Claim 6 An antenna structure of a proximity sensor antenna device, comprising: a first conductor having a feeding segment for connecting to a signal feeding cable, a coupling segment spaced apart from the feeding segment, and a direct current (DC) blocking unit connected between the feeding segment and the coupling segment; a high-frequency blocking unit connected to the coupling segment of the first conductor; and a second conductor spaced apart from the first conductor, wherein an end of the second conductor is connected to a ground, and the second conductor is provided without connecting any capacitance member and any inductance member; wherein the coupling segment of the first conductor is selectively in a coupling antenna mode and in a capacitance electrode mode; when the coupling segment is in the coupling antenna mode, the coupling segment is configured to couple with the second conductor through a radiofrequency signal; when the coupling segment is in the capacitance electrode mode, the coupling segment is configured to detect an external object, and a capacitance value between the coupling segment and the external object is variable according to a distance between the coupling segment and the external object. ### Claim 7 (depends on 6) The antenna structure of the proximity sensor antenna device as claimed in claim 6, further comprising a first inductance unit and a first expanding electrode segment, wherein one end of the first inductance unit is connected to the coupling segment, and the other end of the first inductance unit is connected to the first expanding electrode segment, so that the coupling segment and the first expanding electrode segment are configured to co-detect the external object when the coupling segment is in the capacitance electrode mode. ### Claim 8 (depends on 7) The antenna structure of the proximity sensor antenna device as claimed in claim 7, further comprising a second inductance unit and a second expanding electrode segment, wherein one end of the second inductance unit is connected to the coupling segment, and the other end of the second inductance unit is connected to the second expanding electrode segment, so that the coupling segment, the first expanding electrode segment, and the second expanding electrode segment are configured to co-detect the external object when the coupling segment is in the capacitance electrode mode. ### Claim 9 (depends on 8) The antenna structure of the proximity sensor antenna device as claimed in claim 8, wherein one of the first inductance member and the second inductance member is connected to an end of the coupling segment arranged away from the feeding segment. ### Claim 10 (depends on 6) The antenna structure of the proximity sensor antenna device as claimed in claim 6, wherein the DC blocking unit includes two coupling portions spaced apart from each other, the two coupling portions are respectively and integrally connected to the feeding segment and the coupling segment, and the two coupling portions are configured to couple with each other to generate a capacitance effect.