Patents by Inventor Ehsan Hadizadeh Hafshejani

Ehsan Hadizadeh Hafshejani 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).

  • Publication number: 20240162754
    Abstract: The present invention involves a bimodal near-field resonant wireless system for transferring power from one or more photovoltaic cells to a power load. One or more transmission modules are in electrical communication with the one or more photovoltaic cells, converting power from photovoltaic cells into an oscillating electrical power signal having a variable oscillation frequency. Transmitter resonators are in electrical communication with transmission modules resonating at the variable oscillation frequency. Receiver resonators, resonating at the variable oscillation frequency and disposed to bimodally receive power from transmitter resonators simultaneously via capacitive coupling and magnetic induction according to an adjustable transfer mode ratio of capacitive to inductive power transfer.
    Type: Application
    Filed: January 22, 2024
    Publication date: May 16, 2024
    Inventors: Soroush Dehghani MOHAMMADABADI, Mohammadjavad SHARIATZADEH, Ehsan Hadizadeh HAFSHEJANI, Ehud DAON
  • Publication number: 20240162753
    Abstract: The present invention involves systems and methods of bimodal near-field wireless power transfer for simultaneous capacitive and inductive power transfer by adjustable transfer mode ratio of capacitive to inductive power transfer at a variable power signal oscillation frequency, wherein transmitter pairs are electrically decoupled from one another. The method involves providing a transmission surface of transmitter resonators; monitoring input impedance of each transmitter resonator; calibrating baseline input impedance for the transmitter resonators; and either assigning an off state when input impedance is less than baseline impedance; or assigning an active state to the transmitter resonator when input impedance is greater.
    Type: Application
    Filed: January 19, 2024
    Publication date: May 16, 2024
    Inventors: Soroush Dehghani MOHAMMADABADI, Mohammadjavad SHARIATZADEH, Ehsan Hadizadeh HAFSHEJANI, Ehud DAON
  • Publication number: 20240162756
    Abstract: The present invention involves a system and method for transferring power from power source to receiver. Radio frequency power amplifier in wired electrical communication with direct current source and configured to convert it into alternating voltage signal having oscillation frequency, with adjustable phase radio frequency rectifier in wired electrical contact with power load and in radio frequency communication with power amplifier; configured to receive power transferred from amplifier; and receiver controller in communication with rectifier, configured for adjusting efficiency of power transfer from amplifier to rectifier by adjusting current-voltage phase characteristic of rectifier.
    Type: Application
    Filed: January 25, 2024
    Publication date: May 16, 2024
    Inventors: Soroush Dehghani MOHAMMADABADI, Mohammadjavad SHARIATZADEH, Ehsan Hadizadeh HAFSHEJANI, Ehud DAON
  • Publication number: 20240128998
    Abstract: A system and associated method transfer power between a DC source and a variable load. Two power signals are extracted from the DC source at HF frequency via two self-synchronous radio frequency rectifiers/amplifiers switched by two corresponding HF switching signals having between them either a frequency difference or a phase difference controlled by a duty cycle and overlap controller. The two HF power signals are mixed in a wired, wireless, or bimodal wireless HF power link system to produce a transferred power signal based on the mixing and on manipulating the phase difference when present. A power signal conversion circuit in communication with the HF power link system produces an unfolded output power signal from the transferred power signal. The system and method allow transfer to the load of at least one of an adjustable DC power signal and an AC power signal phase locked to an existing power signal in the load.
    Type: Application
    Filed: September 27, 2023
    Publication date: April 18, 2024
    Inventors: Soroush Dehghani MOHAMMADABADI, Mohammadjavad SHARIATZADEH, Ehsan Hadizadeh HAFSHEJANI, Ehud DAON, Alireza ASOODEH
  • Publication number: 20230278437
    Abstract: Provided herein are systems and methods for transferring power.
    Type: Application
    Filed: March 14, 2023
    Publication date: September 7, 2023
    Inventors: Ehud DAON, Alireza ASOODEH, Mohammadjavad SHARIATZADEH, Ehsan HADIZADEH HAFSHEJANI, Soroush DEHGHANI MOHAMMADABADI
  • Publication number: 20220368159
    Abstract: A system for transferring power from a power source to a receiver.
    Type: Application
    Filed: March 11, 2020
    Publication date: November 17, 2022
    Inventors: Soroush Dehghani MOHAMMADABADI, Mohammadjavad SHARIATZADEH, Ehsan Hadizadeh HAFSHEJANI, Ehud DAON
  • Patent number: 10333541
    Abstract: A novel non-uniform sampling technique for a burst type signal. The analog signal is digitized with high sampling rate to maintain harmonics at higher frequencies and consequently the integrity of the analog signal. Then by using non-uniform sampling technique the most significant samples are selected for further processing which results in overall cost and power consumption reduction.
    Type: Grant
    Filed: August 28, 2018
    Date of Patent: June 25, 2019
    Assignee: Kiomars Anvari
    Inventors: Ehsan Hadizadeh Hafshejani, Ali Fotowat-Ahmady, Kiomars Anvari
  • Patent number: 10270461
    Abstract: This application discloses an implementation of a novel non-uniform sampling technique for a burst type signal. A simple circuit is developed that implements an analog computation of a complex digital calculation to skip the unnecessary samples and choose the optimum next sample. Then the optimum samples are selected for further processing which results in overall cost and power consumption reduction.
    Type: Grant
    Filed: August 29, 2018
    Date of Patent: April 23, 2019
    Assignee: Kiomars Anvari
    Inventors: Ehsan Hadizadeh Hafshejani, Ali Fotowat-Ahmady, Kiomars Anvari