Patents by Inventor Farrokh Mohamadi

Farrokh Mohamadi 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).

  • Patent number: 10878708
    Abstract: A drone is provided with a convolutional neural network that processes a fusion of video and radar data to identify and avoid collision threats. The drone includes a transmitter for transmitting the video data to a remote convolutional neural network for identifying structures and for further identifying threats or faults with the structures.
    Type: Grant
    Filed: March 5, 2018
    Date of Patent: December 29, 2020
    Inventor: Farrokh Mohamadi
  • Patent number: 10558186
    Abstract: A pre-trained convolutional network is trained to accurately distinguish between video images of different types of drones. In addition, a neural network is also trained to distinguish between the drones based upon their audio signatures.
    Type: Grant
    Filed: October 13, 2017
    Date of Patent: February 11, 2020
    Inventor: Farrokh Mohamadi
  • Patent number: 10267909
    Abstract: A system includes: a planar antenna array that includes a plurality of right-hand circularly polarized (RHCP) antennas and left-hand circularly polarized (LHCP) antennas in a planar surface or in layers, in which each antenna element includes a spiral plate; a feed network connecting a signal to each of the antennas; and amplifiers dispersed in the feed network configured to provide spatial power combining and beam forming of the signal.
    Type: Grant
    Filed: January 25, 2016
    Date of Patent: April 23, 2019
    Inventor: Farrokh Mohamadi
  • Publication number: 20190097327
    Abstract: A system and method is provided in which a single-pole-double-throw switch controls whether a circular loop transmits a right-hand circular polarized signal or a left-hand circular polarized signal. The single-pole-double-throw switch is shielded from the circular loop by a metallic ground plane. An annulus of dielectric insulates the circular loop from the metallic ground plane.
    Type: Application
    Filed: August 17, 2018
    Publication date: March 28, 2019
    Inventor: Farrokh Mohamadi
  • Publication number: 20180313950
    Abstract: A system and method is provided to quantize a plurality of search bins within a structure with a label corresponding to whether an UWB radar sensor has detected an individual within the search bin to produce a labeled image of plurality of search bins. A convolutional neural network classifies the labeled image regarding how many individuals are shown in the labeled image.
    Type: Application
    Filed: May 1, 2018
    Publication date: November 1, 2018
    Inventor: Farrokh Mohamadi
  • Publication number: 20180253980
    Abstract: A drone is provided with a convolutional neural network that processes a fusion of video and radar data to identify and avoid collision threats. The drone includes a transmitter for transmitting the video data to a remote convolutional neural network for identifying structures and for further identifying threats or faults with the structures.
    Type: Application
    Filed: March 5, 2018
    Publication date: September 6, 2018
    Inventor: Farrokh Mohamadi
  • Publication number: 20180121804
    Abstract: A pre-trained convolutional neural network is trained to accurately identify threats in x-ray images of luggage. The x-ray images are filtered according to a threshold to separate out the outlines of dense objects prior to the analysis by the trained convolutional neural network.
    Type: Application
    Filed: October 31, 2017
    Publication date: May 3, 2018
    Inventor: Farrokh Mohamadi
  • Publication number: 20180107182
    Abstract: A pre-trained convolutional network is trained to accurately distinguish between video images of different types of drones. In addition, a neural network is also trained to distinguish between the drones based upon their audio signatures.
    Type: Application
    Filed: October 13, 2017
    Publication date: April 19, 2018
    Inventor: Farrokh Mohamadi
  • Patent number: 9774382
    Abstract: Methods and systems are provided for relocatable repeaters for wireless communication links to locations that may present accessibility problems using, for example, small unmanned aerial systems (sUAS). An sUAS implemented as an easy-to-operate, small vertical take-off and landing (VTOL) aircraft with hovering capability for holding station position may provide an extended range, highly secure, high data rate, repeater system for extending the range of point-to-point wireless communication links (also referred to as “crosslinks”) in which repeater locations are easily relocatable with very fast set-up and relocating times. A repeater system using beam forming and power combining techniques enables a very high gain antenna array with very narrow beam width and superb pointing accuracy. The aircraft includes a control system enabling three-dimensional pointing and sustaining directivity of the beam independently of flight path of the aircraft.
    Type: Grant
    Filed: July 9, 2015
    Date of Patent: September 26, 2017
    Inventor: Farrokh Mohamadi
  • Patent number: 9748645
    Abstract: Similar to cell based electronics systems that employ a sea of small unit cells in large scale arrays, such as thin film display monitors or semiconductor memories, an antenna array employs micron to centimeter size antenna pixelate cells that are integrated to form the plate of an antenna. Each row and column of cells in the antenna array may be accessed by digital logic and the RF transmission/reception state of the switchable cell changed. Thus, the antenna plate can be reconfigured and its radiating plate reformed to a specific pattern as an element of a larger array of antennas in wafer scale form.
    Type: Grant
    Filed: January 3, 2014
    Date of Patent: August 29, 2017
    Inventor: Farrokh Mohamadi
  • Patent number: 9547019
    Abstract: A tunneling accelerometer that can be implemented as a MEMS micro sensor provides differential sensing that minimizes large forces resulting from undesired environmental effects. Used as a seismic sensor, for example, the accelerometer exhibits maximum sensitivity for small seismic waves and suppresses very large seismic activities occurring at shallower depths. In one embodiment, detected current decreases from its maximum for stronger forces and is maximized for small vibrations. In another embodiment, separation of columns of top and bottom tunneling tip pairs, one column from the next, increases gradually so that the tunneling accelerometer suppresses sensitivity to large accelerations such as large seismic activity. A manufacturing process for the accelerometer provides reduced complexity for better yield.
    Type: Grant
    Filed: January 9, 2014
    Date of Patent: January 17, 2017
    Inventor: Farrokh Mohamadi
  • Patent number: 9547075
    Abstract: A system includes a self-propelled robotic vehicle carrying an UWB sensor. The UWB sensor responds to binary transitions of a mode control signal to select for its modes of operation.
    Type: Grant
    Filed: August 21, 2014
    Date of Patent: January 17, 2017
    Inventor: Farrokh Mohamadi
  • Patent number: 9546547
    Abstract: There is provided a system and method for monitoring of fractured wells and conventional wells to detect leaks. The method comprises interrogating a plurality of resonant tags using a modulated RF signal transmitted from an interrogator, wherein the plurality of resonant tags are dispersed within a channel.
    Type: Grant
    Filed: November 23, 2015
    Date of Patent: January 17, 2017
    Inventor: Farrokh Mohamadi
  • Publication number: 20160301430
    Abstract: Methods and systems are disclosed for scalable antenna arrays that may be built up using pluggable tiles that have low distortion, flat band high gain, and structured to channelize the signals into narrow bands that may be 40 MHz or even smaller bandwidth apart. Antenna array tiles may employ traveling wave tube (TWT) components and wafer scale arrays. H-topology, equal length, feed networks connect the signals to antenna elements. The fractal-like, recursively repeating at different size scales, structure for the H-tree feed networks, implemented using pluggable tiles, facilitates the scalability of the high gain waveguide antenna array. System integration across the 75-115 GHz spectral band implements scalable aperture architecture with emphasis on addressing considerations of the TX power requirement, feed network, channelizing signals at different frequency bands using specially designed diplexers and combiners, cooling, component placement, and isolation.
    Type: Application
    Filed: June 13, 2016
    Publication date: October 13, 2016
    Inventor: Farrokh Mohamadi
  • Patent number: 9459345
    Abstract: Systems and methods for screening, where a subject walks through or in front of a passive detector (or scanning unit) to be screened for possession of unauthorized electronics devices, provide for detecting and monitoring electronics systems not authorized to be used in secure areas. By focusing a very narrow beam width antenna array, individuals can be screened who may have concealed electronics devices that can pose danger to the surroundings. There is no need for removing clothing or accessories such as a jacket or backpack, for example. The detection system may include a frequency scanned passive receiver that captures a signal from a detected electronics device, measures its strength, and identifies the device or classifies it according to a pre-determined set of categories (e.g., cellular phone, camera, or global positioning system (GPS)).
    Type: Grant
    Filed: May 13, 2014
    Date of Patent: October 4, 2016
    Inventor: Farrokh Mohamadi
  • Patent number: 9419476
    Abstract: Methods and systems are provided for achieving delivery of power wirelessly using a highly beam-formed array of radio frequency (RF) transmitters as a source and a spatially beam-formed array of receivers that collect the impinged RF power and feed a multistage RF to direct current (RF-DC) conversion circuit that, for example, increases output voltage by doubling the voltage at each stage, while power delivery remains constant. One or more embodiments may provide energy wirelessly and—unlike conventional systems where the power flux density may be too low for applications where an energy density (specific energy) on the order of several mega-Joules per kilogram (MJ/Kg) is desired—may provide sufficient power flux density for many practical applications.
    Type: Grant
    Filed: July 2, 2013
    Date of Patent: August 16, 2016
    Inventor: Farrokh Mohamadi
  • Publication number: 20160218425
    Abstract: Similar to cell based electronics systems that employ a sea of small unit cells in large scale arrays, such as thin film display monitors or semiconductor memories, an antenna array employs micron to centimeter size antenna pixelate cells that are integrated to form the plate of an antenna. Each row and column of cells in the antenna array may be accessed by digital logic and the RF transmission/reception state of the switchable cell changed. Thus, the antenna plate can be reconfigured and its radiating plate reformed to a specific pattern as an element of a larger array of antennas in wafer scale form.
    Type: Application
    Filed: January 3, 2014
    Publication date: July 28, 2016
    Inventor: Farrokh Mohamadi
  • Patent number: 9383426
    Abstract: A combination of active reader tags and ultra wideband (UWB) radar systems provide real-time monitoring of first responders, with identification of each team member using active tags, and detection of victims or other subjects using motion or breathing detection, in a field of operations such as a building affected by fire or hazardous material or search and rescue mission area. Initially, a cluster of miniaturized radars (sensors) act in a static mode of operation, gathering static radar information used to depict a constructed layout of the premises. The cluster of radars then operate in a dynamic mode that detects motion or breathing of multiple subjects inside the field of operations. With dual mode operation the system can read the active tags identification, and by triangulation, display the position of each first responder with its identification and positions of subjects on a composite image of the constructed layout.
    Type: Grant
    Filed: October 31, 2013
    Date of Patent: July 5, 2016
    Inventor: Farrokh Mohamadi
  • Publication number: 20160178745
    Abstract: A system includes: a planar antenna array that includes a plurality of right-hand circularly polarized (RHCP) antennas and left-hand circularly polarized (LHCP) antennas in a planar surface or in layers, in which each antenna element includes a spiral plate; a feed network connecting a signal to each of the antennas; and amplifiers dispersed in the feed network configured to provide spatial power combining and beam forming of the signal.
    Type: Application
    Filed: January 25, 2016
    Publication date: June 23, 2016
    Inventor: Farrokh Mohamadi
  • Patent number: 9372256
    Abstract: Radar imaging for medical diagnosis addresses the need for non-ionizing and low-cost alternatives to conventional medical diagnosis methods, such as mammography x-ray techniques, which expose patients to ionizing radiation for cancer detection. An ultra wide band (UWB) sensor can produce very fine beams at the V- or W-bands using beam forming techniques developed specifically for wafer scale antenna arrays. The high bandwidth radio waves can penetrate tissue and resolve tissue anomalies with high-resolution. Pseudo-random coding creates a signal that allows the correlating receiver to extract very low energy reflected signals from background noise providing coding gain. An integrated panel of sensor antenna arrays enables rapid scanning of the subject area, such as breast tissue, to detect anomalies by eliminating the need for mechanical scanning (e.g.
    Type: Grant
    Filed: February 26, 2014
    Date of Patent: June 21, 2016
    Assignee: Farrokh Mohamadi
    Inventor: Farrokh Mohamadi