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: 7126541
    Abstract: In one embodiment, an antenna array is provided that includes a transparent substrate, a plurality of antennas formed on a surface of the transparent substrate, and an integrated circuit, the integrated circuit including an RF beam forming interface circuit adapted to perform at least one of phase-shifting and attenuating an RF signal according to a transmit beam forming command to form an RF driving signal for driving the plurality of antennas, the RF beam forming interface circuit also adapted to perform at least one of phase-shifting and attenuating a received RF signal from the plurality of antennas according to a receive beam forming command.
    Type: Grant
    Filed: February 2, 2005
    Date of Patent: October 24, 2006
    Inventor: Farrokh Mohamadi
  • Patent number: 7126554
    Abstract: A beam-forming antenna system includes an array of integrated antenna units. Each integrated antenna unit includes an oscillator coupled to an antenna. A network couples to the integrated antenna units to provide phasing information to the oscillators.
    Type: Grant
    Filed: December 3, 2004
    Date of Patent: October 24, 2006
    Inventor: Farrokh Mohamadi
  • Publication number: 20060176211
    Abstract: In one embodiment, wafer-scale antenna module is provided that includes: a substrate having a first surface and an opposing second surface; a plurality of conductive contact regions extending from the first surface into the substrate towards the second surface; active circuitry formed in the substrate adjacent the second surface, the active circuitry electrically coupled to the conductive contact regions; an insulating layer adjacent the first surface, the insulating layer forming a plurality of vias arranged corresponding to the plurality of conductive contact regions, each via forming an opening at the corresponding conductive contact region; and a plurality of antennas formed on the insulating layer corresponding to the plurality of vias; wherein each via contains an electrical conductor to electrically couple the corresponding contact region to the antenna corresponding to the via, whereby a resulting separation between the driving circuitry and the antennas aids an electrical isolation of the driving cir
    Type: Application
    Filed: March 20, 2006
    Publication date: August 10, 2006
    Inventor: Farrokh Mohamadi
  • Publication number: 20060152416
    Abstract: A beam-forming antenna system include a substrate; a plurality of mixers formed in the substrate; a phase generator formed in the substrate; and a plurality of antennas formed adjacent the substrate, wherein each mixer is coupled to a corresponding at least one of the antennas, and wherein the phase generator is operable to provide a plurality of uniquely-phased LO signals, each mixer being coupled to the phase generator to receive a different one of uniquely-phased LO signals such that an RF signal received by the antennas is phase-shifted through the mixers according to the unique phases of the LO signal to form a plurality of phase-shifted IF signals.
    Type: Application
    Filed: February 22, 2006
    Publication date: July 13, 2006
    Inventor: Farrokh Mohamadi
  • Patent number: 7042388
    Abstract: A radar transponder is provided that synchronizes the encoding of repeated radar pulses using an envelope detector to detect the envelope of received radar pulse signals. An edge detector detects the pulse edges in the envelope so that code words may be multiplied with the received radar pulse signals synchronously with the detected pulse edges to provide an encoded pulse train that may be transmitted to a radar interrogator.
    Type: Grant
    Filed: July 14, 2004
    Date of Patent: May 9, 2006
    Inventor: Farrokh Mohamadi
  • Publication number: 20060077102
    Abstract: In one embodiment, a wafer scale antenna array is provided that includes: a substrate, a first plurality of antennas adjacent to the substrate; and a driving network adjacent the substrate for transmitting RF signals to the plurality of antennas and for receiving RF signals from the plurality of antennas, the driving network coupling to a distributed plurality of driving amplifiers and corresponding matching amplifiers integrated with the substrate.
    Type: Application
    Filed: May 31, 2005
    Publication date: April 13, 2006
    Inventor: Farrokh Mohamadi
  • Publication number: 20060061507
    Abstract: A beam-forming antenna system includes an array of integrated antenna circuits. Each integrated antenna circuit includes an oscillator coupled to an antenna. A network couples to the integrated antenna units to provide phasing information to the oscillators. A controller controls the phasing information provided by the network to the oscillators. In an alternative embodiment, the phasing to each antenna element is controlled through a fixed corporate feed network. The relative gains of the antenna signals received or transmitted through the fixed corporate feed may be adjusted with respect to each other to provide a beam steering capability.
    Type: Application
    Filed: August 22, 2005
    Publication date: March 23, 2006
    Inventor: Farrokh Mohamadi
  • Publication number: 20060040615
    Abstract: In one embodiment, a beamforming RF repeater includes: a beamforming controller; a first array of antennas organized into a plurality of first sub-arrays; a plurality of first RF combiner and decombiner circuits corresponding to the plurality of first sub-arrays, wherein each first RF combiner and decombiner circuit is configured to phase shift in the RF domain a received RF signal from the corresponding first sub-array according to a first beamforming command from the beamforming controller such that a first combined signal formed from the phase-shifted signals from the plurality of first RF combiner and decombiner circuits is received in a first desired beam direction; a second array of antennas organized into a plurality of second sub-arrays; and a plurality of second RF combiner and decombiner circuits corresponding to the plurality of second sub-arrays, wherein each second RF combiner and decombiner circuit is configured to phase shift in the RF domain the first combined signal according to a second beam
    Type: Application
    Filed: August 15, 2005
    Publication date: February 23, 2006
    Inventor: Farrokh Mohamadi
  • Patent number: 6982670
    Abstract: A beam-forming antenna system includes an array of integrated antenna circuits. Each integrated antenna circuit includes an oscillator coupled to an antenna. A network couples to the integrated antenna units to provide phasing information to the oscillators. A controller controls the phasing information provided by the network to the oscillators. In an alternative embodiment, the phasing to each antenna element is controlled through a fixed corporate feed network. The relative gains of the antenna signals received or transmitted through the fixed corporate feed may be adjusted with respect to each other to provide a beam steering capability.
    Type: Grant
    Filed: June 3, 2004
    Date of Patent: January 3, 2006
    Inventor: Farrokh Mohamadi
  • Patent number: 6963307
    Abstract: An antenna array comprises a plurality of integrated antenna units. Each integrated antenna unit includes an oscillator coupled through a transformer to an antenna. The oscillators are formed on a semiconductor substrate and the antennas and transformers are formed in metal layers overlaying the semiconductor substrate.
    Type: Grant
    Filed: April 25, 2003
    Date of Patent: November 8, 2005
    Inventor: Farrokh Mohamadi
  • Publication number: 20050169319
    Abstract: In one embodiment, a 10 Giga-bit Ethernet conversion system is provided that is operable to be inserted in 10 Gigabit optical fiber Ethernet systems, wherein each optical fiber Ethernet system includes an electrical-to-optical interface presenting electrical signals to an optical interface for converting the electrical signals to optical signals, the electrical signals being organized into a plurality of channels, wherein each channel carries Ethernet idle characters between data frame transmissions.
    Type: Application
    Filed: March 10, 2005
    Publication date: August 4, 2005
    Inventor: Farrokh Mohamadi
  • Publication number: 20050156789
    Abstract: In one embodiment, an antenna array is provided that includes a semiconductor substrate having a first surface and an opposing second surface; a plurality of heavily-doped contact regions extending from the first surface to the second surface; a plurality of antennas formed on an insulating layer adjacent the first surface, each antenna being coupled to corresponding ones of the contact regions by vias; driving circuitry formed on the second surface of the substrate, wherein the driving circuitry is configured such that each antenna corresponds to an RF beam forming interface circuit adapted to perform at least one of phase-shifting and attenuating an RF signal according to a transmit beam forming command to form an RF driving signal for driving the corresponding antenna, the RF beam forming interface circuit also adapted to perform at least one of phase-shifting and attenuating a received RF signal from the corresponding antenna according to a receive beam forming command, and a waveguide network formed in a
    Type: Application
    Filed: March 7, 2005
    Publication date: July 21, 2005
    Inventor: Farrokh Mohamadi
  • Publication number: 20050151698
    Abstract: In one embodiment, an antenna array is provided that includes a transparent substrate, a plurality of antennas formed on a surface of the transparent substrate, and an integrated circuit, the integrated circuit including an RF beam forming interface circuit adapted to perform at least one of phase-shifting and attenuating an RF signal according to a transmit beam forming command to form an RF driving signal for driving the plurality of antennas, the RF beam forming interface circuit also adapted to perform at least one of phase-shifting and attenuating a received RF signal from the plurality of antennas according to a receive beam forming command.
    Type: Application
    Filed: February 2, 2005
    Publication date: July 14, 2005
    Inventor: Farrokh Mohamadi
  • Publication number: 20050116864
    Abstract: A beam-forming antenna system includes an array of integrated antenna units. Each integrated antenna unit includes an oscillator coupled to an antenna. A network couples to the integrated antenna units to provide phasing information to the oscillators.
    Type: Application
    Filed: December 3, 2004
    Publication date: June 2, 2005
    Inventor: Farrokh Mohamadi
  • Patent number: 6885344
    Abstract: A patch antenna is excited by a linear feedline through a cross-shaped aperture in a shield layer. The cross-shaped aperture includes a longitudinal arm running parallel to the linear feedline and a transverse arm running orthogonally to the longitudinal arm.
    Type: Grant
    Filed: April 25, 2003
    Date of Patent: April 26, 2005
    Inventor: Farrokh Mohamadi
  • Patent number: 6870503
    Abstract: A beam-forming antenna system includes an array of integrated antenna units. Each integrated antenna unit includes an oscillator coupled to an antenna. A network couples to the integrated antenna units to provide phasing information to the oscillators. A controller controls the phasing information provided by the network to the oscillators.
    Type: Grant
    Filed: April 25, 2003
    Date of Patent: March 22, 2005
    Inventor: Farrokh Mohamadi
  • Publication number: 20050057421
    Abstract: A downlink module is provided that includes a sensor interface operable to provide digital sensor signals. It also includes a GPS receiver for receiving GPS timing and location signals. The downlink module may be configured to form packets of digital sensor signals and GPS timing and location signals according to a desired protocol.
    Type: Application
    Filed: September 16, 2004
    Publication date: March 17, 2005
    Inventor: Farrokh Mohamadi
  • Publication number: 20050012654
    Abstract: A radar transponder is provided that synchronizes the encoding of repeated radar pulses using an envelope detector to detect the envelope of received radar pulse signals. An edge detector detects the pulse edges in the envelope so that code words may be multiplied with the received radar pulse signals synchronously with the detected pulse edges to provide an encoded pulse train that may be transmitted to a radar interrogator.
    Type: Application
    Filed: July 14, 2004
    Publication date: January 20, 2005
    Inventor: Farrokh Mohamadi
  • Publication number: 20040246176
    Abstract: A beam-forming antenna system includes an array of integrated antenna circuits. Each integrated antenna circuit includes an oscillator coupled to an antenna. A network couples to the integrated antenna units to provide phasing information to the oscillators. A controller controls the phasing information provided by the network to the oscillators. In an alternative embodiment, the phasing to each antenna element is controlled through a fixed corporate feed network. The relative gains of the antenna signals received or transmitted through the fixed corporate feed may be adjusted with respect to each other to provide a beam steering capability.
    Type: Application
    Filed: June 3, 2004
    Publication date: December 9, 2004
    Inventor: Farrokh Mohamadi
  • Publication number: 20040100405
    Abstract: A patch antenna is excited by a linear feedline through a cross-shaped aperture in a shield layer. The cross-shaped aperture includes a longitudinal arm running parallel to the linear feedline and a transverse arm running orthogonally to the longitudinal arm.
    Type: Application
    Filed: April 25, 2003
    Publication date: May 27, 2004
    Inventor: Farrokh Mohamadi