Patents by Inventor Vitor Andrade FREITAS
Vitor Andrade FREITAS has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
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Patent number: 11610089Abstract: An apparatus comprising: an inductive coupler for coupling inductively with a radio frequency, RF, H-field to provide an alternating RF voltage; a near field, RF, communicator connected to the inductive coupler for performing near field RF communication; an auxiliary circuit connected to the inductive coupler by a rectifier for obtaining DC electrical energy from the alternating RF voltage wherein the auxiliary circuit is arranged to communicate data with the near field RF communicator; wherein the rectifier comprises: a first rectifier input and a second rectifier input for receiving the alternating RF voltage, a first rectifier output and a second rectifier output for providing the DC electrical energy to the auxiliary circuit; a rectifying element connected between the first rectifier input and the second rectifier input wherein the first rectifier output is coupled to an output of the rectifying element and to the first rectifier input by a first inductor.Type: GrantFiled: March 3, 2022Date of Patent: March 21, 2023Assignee: FREEVOLT TECHNOLOGIES LIMITEDInventors: Vitor Andrade Freitas, Manuel Pinuela Rangel, Victor Diaz
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Publication number: 20220188587Abstract: An apparatus comprising: an inductive coupler for coupling inductively with a radio frequency, RF, H-field to provide an alternating RF voltage; a near field, RF, communicator connected to the inductive coupler for performing near field RF communication; an auxiliary circuit connected to the inductive coupler by a rectifier for obtaining DO electrical energy from the alternating RF voltage wherein the auxiliary circuit is arranged to communicate data with the near field RF communicator; wherein the rectifier comprises: a first rectifier input and a second rectifier input for receiving the alternating RF voltage, a first rectifier output and a second rectifier output for providing the DC electrical energy to the auxiliary circuit; a rectifying element connected between the first rectifier input and the second rectifier input wherein the first rectifier output is coupled to an output of the rectifying element and to the first rectifier input by a first inductor,Type: ApplicationFiled: March 3, 2022Publication date: June 16, 2022Inventors: Vitor Andrade FREITAS, Manuel Pinuela RANGEL, Victor DIAZ
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Patent number: 11295187Abstract: An apparatus comprising: an inductive coupler for coupling inductively with a radio frequency, RF, H-field to provide an alternating RF voltage; a near field, RF, communicator connected to the inductive coupler for performing near field RF communication; an auxiliary circuit connected to the inductive coupler by a rectifier for obtaining DC electrical energy from the alternating RF voltage wherein the auxiliary circuit is arranged to communicate data with the near field RF communicator; wherein the rectifier comprises: a first rectifier input and a second rectifier input for receiving the alternating RF voltage, a first rectifier output and a second rectifier output for providing the DC electrical energy to the auxiliary circuit; a rectifying element connected between the first rectifier input and the second rectifier input wherein the first rectifier output is coupled to an output of the rectifying element and to the first rectifier input by a first inductor.Type: GrantFiled: October 29, 2018Date of Patent: April 5, 2022Assignee: FREEVOLT TECHNOLOGIES LIMITEDInventors: Vitor Andrade Freitas, Manuel Pinuela Rangel, Victor Diaz
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Patent number: 11095165Abstract: An RF power harvester comprising a dielectric substrate, having a first major surface and a second major surface, opposite to the first major surface; a connection for a rectifier on the first major surface; an antenna carried on the substrate for harvesting electrical power from a radio frequency electromagnetic field. The antenna comprising a first track of conductive material, carried on the first major surface and comprising a first end adjacent an edge of the substrate, a second end for connection to the rectifier, a first series of line sections between the first end and the second end and a first plurality of meanders, wherein a first line section of the series provides the first end and each subsequent line section is connected to its preceding line section by a meander and is of greater length than its preceding line section.Type: GrantFiled: March 29, 2018Date of Patent: August 17, 2021Assignee: Drayson Technologies (Europe) LimitedInventors: Aline Coelho De Souza, Bruno Roberto Franciscatto, Vitor Andrade Freitas
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Publication number: 20210119490Abstract: An RF power harvesting insert (100) for a wrist-watch, the insert comprising a dielectric substrate (102) and an antenna (104) tuned to harvest power from RF electromagnetic fields to provide a radio frequency electrical signal and comprising a track of electrically conductive material on the substrate, wherein the antenna is carried by an annular region of a first surface of the substrate.Type: ApplicationFiled: March 29, 2018Publication date: April 22, 2021Inventors: Aline Coelho DE SOUSA, Bruno Roberto FRANCISCATTO, Vitor Andrade FREITAS
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Publication number: 20200293847Abstract: An apparatus comprising: an inductive coupler for coupling inductively with a radio frequency, RF, H-field to provide an alternating RF voltage; a near field, RF, communicator connected to the inductive coupler for performing near field RF communication; an auxiliary circuit connected to the inductive coupler by a rectifier for obtaining DC electrical energy from the alternating RF voltage wherein the auxiliary circuit is arranged to communicate data with the near field RF communicator; wherein the rectifier comprises: a first rectifier input and a second rectifier input for receiving the alternating RF voltage, a first rectifier output and a second rectifier output for providing the DC electrical energy to the auxiliary circuit; a rectifying element connected between the first rectifier input and the second rectifier input wherein the first rectifier output is coupled to an output of the rectifying element and to the first rectifier input by a first inductor.Type: ApplicationFiled: October 29, 2018Publication date: September 17, 2020Inventors: Vitor Andrade FREITAS, Manuel Pinuela RANGEL, Victor DIAZ
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Publication number: 20200195059Abstract: An RF power harvester comprising a dielectric substrate, having a first major surface and a second major surface, opposite to the first major surface; a connection for a rectifier on the first major surface; an antenna carried on the substrate for harvesting electrical power from a radio frequency electromagnetic field. The antenna comprising a first track of conductive material, carried on the first major surface and comprising a first end adjacent an edge of the substrate, a second end for connection to the rectifier, a first series of line sections between the first end and the second end and a first plurality of meanders, wherein a first line section of the series provides the first end and each subsequent line section is connected to its preceding line section by a meander and is of greater length than its preceding line section.Type: ApplicationFiled: March 29, 2018Publication date: June 18, 2020Inventors: Aline Coelho DE SOUSA, Bruno Roberto FRANCISCATTO, Vitor Andrade FREITAS
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Publication number: 20200194874Abstract: An RF power harvester comprising a dielectric substrate, an antenna carried on the substrate for coupling with an RF electromagnetic field, the antenna comprising at least one track of conductive material arranged to provide at least one loop around an annular region at the edge of a first face of the substrate, wherein a signal collection gap in the loop provides an electrical connection for obtaining an RF signal from the antenna; and two signal links coupled to the gap and arranged to carry an electrical signal into a region on the substrate surrounded by the annular region.Type: ApplicationFiled: March 29, 2018Publication date: June 18, 2020Inventors: Aline Coelho DE SOUSA, Bruno Roberto FRANCISCATTO, Vitor Andrade FREITAS
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Publication number: 20190044237Abstract: A circuit board for use in wireless energy harvesting applications is disclosed. The circuit board comprises a first plane and ground plane parallel to the first plane. The ground plane has a substantially rectangular shape with a length less than 1.38 ?g and a width less than 0.92 ?g. The first plane comprises an antenna, a feedline and a rectifier. The antenna is configured to receive an RF signal with a wavelength of ?0. The feedline is arranged to filter the received RF signal. The rectifier is arranged to generate a DC voltage from the received RF signal. The antenna, the feedline and the rectifier are arranged substantially co-linear along the first plane, and (formula I) where ?eff is the relative permittivity of a material between the first plane and the ground plane.Type: ApplicationFiled: February 8, 2017Publication date: February 7, 2019Applicant: Drayson Technologies (Europe) LimitedInventors: Manuel Pinuela RANGEL, Bruno Roberto FRANCISCATTO, Vitor Andrade FREITAS