# US 12,603,527 B2 · Energy collection device and rectifier circuit > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 12,603,527 B2 - Document ID: US12603527B2 - Status: Granted - Kind: B2 - Application number: 18/721,274 - Filed: 2022-12-26 - Published: 2025-08-07 - Granted: 2026-04-14 - Earliest claimed: 2021-12-28 - Assignees: Sony Semiconductor Solutions Corporation - Applicants: Sony Semiconductor Solutions Corporation - Inventors: Yoshitaka Yoshino; Yuta Toeda - Web page: https://patentgrep.com/patent/US12603527B2 ## CPC - H02J 50/27: characterised by the type of receiving antennas, e.g. rectennas - H02J 7/345: {using capacitors as storage or buffering devices} - H02J 50/001: {Energy harvesting or scavenging} - H02J 50/005: {Mechanical details of housing or structure aiming to accommodate the power transfer means, e.g. mechanical integration of coils, antennas or transducers into emitting or receiving devices} - H02M 1/32: Means for protecting converters other than automatic disconnection - H02M 3/335: using semiconductor devices only - H02M 7/003: {Constructional details, e.g. physical layout, assembly, wiring or busbar connections} - H02M 7/06: using discharge tubes without control electrode or semiconductor devices without control electrode - H02M 7/217: using semiconductor devices only - H02M 7/219: in a bridge configuration - H02J 7/02: for charging batteries from AC mains by converters - H02J 50/05: using capacitive coupling - H02J: ELECTRIC POWER NETWORKS; CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY - H02M: APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF (transformers H01F; dynamo-electric converters H02K47/00; controlling transformers, reactors or choke coils, control or regulation of electric motors, generators or dynamo-electric converters H02P) ## Abstract An energy collection device that increases output power to be collected is provided. Provided is an energy collection device that includes: an antenna unit having a dipole structure, the antenna unit including a first antenna element that is in contact with an industrial product metal portion or a human body and functions as an antenna, and a second antenna element including a conductor, the antenna unit receiving electric field energy of a radio wave and a quasi-electrostatic field existing in space; a rectifier circuit provided with a switching element that rectifies alternating current (AC) energy output from the antenna unit; and a power storage capacitor configured to store charge output from the rectifier circuit, in which the power storage capacitor has a capacitance value of at least 1 μF or more in order to receive power in a low frequency band. ## Claims ### Claim 1 An energy collection device, comprising: an antenna unit having a dipole structure, the antenna unit including a first antenna element that is in contact with an industrial product metal portion or a human body and functions as an antenna, and a second antenna element including a conductor, the antenna unit receiving electric field energy of a radio wave and a quasi-electrostatic field existing in space; a rectifier circuit provided with a switching element that rectifies alternating current (AC) energy output from the antenna unit; and a power storage capacitor configured to store charge output from the rectifier circuit, wherein the power storage capacitor has a capacitance value of at least 1 μF or more in order to receive power in a low frequency band, wherein the second antenna element, the rectifier circuit, and the power storage capacitor are at least partially coplanar in the energy collection device in an absence of any part of an area of the rectifier circuit and the power storage capacitor overlapping with any part of an area of the second antenna, and wherein the second antenna is a ground for the energy collection device. ### Claim 2 (depends on 1) The energy collection device according to claim 1, the switching element is an FET. ### Claim 3 (depends on 1) The energy collection device according to claim 1, wherein the switching element is a diode. ### Claim 4 (depends on 1) The energy collection device according to claim 1, wherein the low frequency is about 1 Hz to 100 Hz. ### Claim 5 (depends on 4) The energy collection device according to claim 4, wherein the low frequency is 75 Hz to 100 Hz. ### Claim 6 (depends on 1) The energy collection device according to claim 1, wherein the rectifier circuit is any one of a half-wave rectifier circuit, a full-wave rectifier circuit, a voltage doubler circuit, and a Cockcroft-Walton circuit. ### Claim 7 (depends on 1) The energy collection device according to claim 1, configured as an integrated circuit. ### Claim 8 (depends on 1) The energy collection device according to claim 1, further comprising a varistor coupled to and between the first antenna element and the second antenna element. ### Claim 9 (depends on 1) The energy collection device according to claim 1, wherein the first antenna element comprises a conductive resin or a conductive rubber. ### Claim 10 (depends on 1) The energy collection device according to claim 1, wherein the first antenna element is capable of being placed in contact with an industrial product metal portion or a human body. ### Claim 11 An energy collection circuit comprising: an antenna unit having a dipole structure, the antenna unit including a first antenna element that is capable of being placed in contact with an industrial product metal portion or a human body, and a second antenna element including a conductor, the antenna unit receiving electric field energy of a radio wave and a quasi-electrostatic field existing in space; a switching element configured to rectify an alternating current output by the antenna unit; and a matching circuit provided between the antenna unit and the switching element, wherein the matching circuit has a configuration of a low-pass filter that makes matching at a specific frequency of 100 MHz or more, and wherein the rectifier circuit is configured to receive electric field energy of both a frequency band of 100 MHz or less and the specific frequency band, wherein the second antenna element and the switching element at least partially occupy a coplanar area of the energy collection device, wherein an area occupied by the second antenna element does not overlap with an area occupied by the switching device, and wherein the second antenna is a ground for the energy collection circuit. ### Claim 12 (depends on 11) The energy collection circuit according to claim 11, wherein the switching element is an FET. ### Claim 13 (depends on 11) The energy collection circuit according to claim 11, wherein the switching element is a diode. ### Claim 14 (depends on 11) The energy collection circuit according to claim 11, wherein the switching element comprises is any one of a half-wave rectifier circuit, a full-wave rectifier circuit, a voltage doubler circuit, and a Cockcroft-Walton circuit. ### Claim 15 (depends on 11) The energy collection circuit according to claim 11, wherein the specific frequency is any of a UHF band of a television signal, a 900 MHz band, a 2.4 GHz band, and a 5 GHz band. ### Claim 16 (depends on 11) The energy collection circuit according to claim 11, configured as an integrated circuit. ### Claim 17 (depends on 11) The energy collection circuit according to claim 11, further comprising a varistor coupled to and between the first antenna element and the second antenna element. ### Claim 18 An energy collection device, comprising: an antenna unit having a dipole structure, the antenna unit including a first antenna element, and a second antenna element including a conductor, wherein the antenna unit is capable of receiving electric field energy of a radio wave and a quasi-electrostatic field existing in space; a rectifier circuit including a switching element configured to rectify an alternating current received from the antenna unit; and a power storage capacitor configured to store charge output from the rectifier circuit, wherein the power storage capacitor has a capacitance value of at least 1 μF or more in order to receive power in a low frequency band, wherein the second antenna element, the rectifier circuit, and the power storage capacitor are disposed in the energy collection device at least partially coplanar and in an absence of any part of an area of the rectifier circuit and the power storage capacitor overlapping with any part of an area of the second antenna, and wherein the second antenna is a ground for the energy collection device. ### Claim 19 (depends on 18) The energy collection device according to claim 18, wherein the low frequency is about 1 Hz to 100 Hz. ### Claim 20 (depends on 19) The energy collection device according to claim 19, wherein the low frequency is 75 Hz to 100 Hz.