Patents by Inventor Baher S. Haroun

Baher S. Haroun 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).

  • Free-fly class D power amplifier
    Patent number: 8519791
    Abstract: A method is provided. A first enable signal is asserted so as to enable a first driver, where the first driver has a first output and a first parasitic capacitance. A second enable signal is asserted so as to enable a second driver, where the second driver has a second output and a second parasitic capacitance. The first and second outputs are coupled together by a switching network when the second driver is enabled. Pulses from complementary first and second radio frequency (RF) signals are applied to the first driver, where there is a first set of free-fly intervals between consecutive pulses from the first and second RF signals, and pulses from complementary third and fourth RF signals are applied to the second driver, wherein there is a second set of free-fly interval between consecutive pulses from the third and fourth RF signals.
    Type: Grant
    Filed: March 9, 2012
    Date of Patent: August 27, 2013
    Assignee: Texas Instruments Incorporated
    Inventors: Joonhoi Hur, Lei Ding, Rahmi Hezar, Baher S. Haroun
  • Current mode blixer with noise cancellation
    Patent number: 8515380
    Abstract: Blixers, which are a relatively recent development, have not be studied as extensively as many older circuit designs. Here, a blixer is provided that improves linearity and reduces noise over other conventional blixer designs. To accomplish this, the blixer provided here uses a differential amplifier and/or a dummy path within its mixing circuit to perform noise reduction (and improve linearity).
    Type: Grant
    Filed: June 16, 2011
    Date of Patent: August 20, 2013
    Assignee: Texas Instruments Incorporated
    Inventors: Vijay B. Rentala, Venkatesh Srinivasan, Srinath M. Ramaswamy, Baher S. Haroun
  • Analog baseband circuit for a terahertz phased array system
    Patent number: 8513607
    Abstract: A method for determining the position of a target is provided. Several emitted pulses of terahertz radiations are emitted from a phased array (which has several transceivers) in consecutive cycles (typically). These emitted pulses are generally configured to be reflected by a target so as to be received by the phased array within a scan range (which includes a digitization window with several sampling periods). Output signals from each of the transceivers are then combined to generate a combined signal for each cycle. The combined signal in each sampling period within the digitization window for emitted pulses is averaged to generate an averaged signal for each sampling period within the digitization window. These averaged signals are then digitized.
    Type: Grant
    Filed: April 12, 2011
    Date of Patent: August 20, 2013
    Assignee: Texas Instruments Incorporated
    Inventors: Srinath M. Ramaswamy, Vijay B. Rentala, Brian P. Ginsburg, Baher S. Haroun, Eunyoung Seok
  • Reduced offset comparator
    Patent number: 8513980
    Abstract: An apparatus is provided. The apparatus comprises backend circuitry and pairs of redundant input circuits. Each pair of redundant input circuits is configured to form a differential pair of transistors, and each redundant input circuit includes a multiplexer and a set of transistors. The multiplexer is coupled to the backend circuitry, and each transistor from the set of transistors has a first passive electrode, a second passive electrode, and a control electrode. The first passive electrode of each transistor from the set of transistors is coupled to the multiplexer, and the control electrodes from the set of transistors are coupled together.
    Type: Grant
    Filed: October 25, 2011
    Date of Patent: August 20, 2013
    Assignee: Texas Instruments Incorporated
    Inventors: Robert F. Payne, Baher S. Haroun
  • Output linking circuitry for multiple TAP domains
    Patent number: 8516320
    Abstract: IEEE 1149.1 Test Access Ports (TAPs) may be utilized at both IC and intellectual property core design levels. TAPs serve as serial communication ports for accessing a variety of embedded circuitry within ICs and cores including; IEEE 1149.1 boundary scan circuitry, built in test circuitry, internal scan circuitry, IEEE 1149.4 mixed signal test circuitry, IEEE P5001 in-circuit emulation circuitry, and IEEE P1532 in-system programming circuitry. Selectable access to TAPs within ICs is desirable since in many instances being able to access only the desired TAP(s) leads to improvements in the way testing, emulation, and programming may be performed within an IC. A TAP linking module is described that allows TAPs embedded within an IC to be selectively accessed using 1149.1 instruction scan operations.
    Type: Grant
    Filed: November 6, 2012
    Date of Patent: August 20, 2013
    Assignee: Texas Instruments Incorporated
    Inventors: Lee D. Whetsel, Baher S. Haroun, Brian J. Lasher, Anjali Vij
  • LINC TRANSMITTER WITH IMPROVED EFFICIENCY
    Publication number: 20130210376
    Abstract: A radio frequency (RF) transmitter is provided. The RF transmitter includes first and second drivers that are configured to receive first and second sets of complementary RF signals. Restoration circuits are coupled to the first and second drivers, and a bridge circuit is coupled to the first and second restoration circuits. By having the restoration circuits and the bridge circuit, a common mode impedance and a differential impedance can be provided, where the common mode impedance is lower than the differential impedance.
    Type: Application
    Filed: February 9, 2012
    Publication date: August 15, 2013
    Applicant: Texas Instruments Incorporated
    Inventors: Joonhoi Hur, Rahmi Hezar, Lei Ding, Baher S. Haroun
  • Low impedance transmisson line
    Patent number: 8476687
    Abstract: Transmission lines employing transmission line units or elements within integrated circuits (ICs) are well-known. Typically, different heights for these transmission line units can vary the characteristics of the cell (and transmission line), and there is typically a tradeoff between impedance and space (layout) specifications. Here, a transmission line is provided, which is generally comprised of elements of the same general width, but having differing or tapered heights that allow for impedance adjustments for high frequency applications (i.e., 160 GHz). For example, a transmission line that is coupled to a balun, with the transmission line units decreasing in height near the balun's center tap to adjust the impedance of the transmission line for the balun, is shown.
    Type: Grant
    Filed: September 22, 2010
    Date of Patent: July 2, 2013
    Assignee: Texas Instruments Incorporated
    Inventors: Brian P. Ginsburg, Vijay B. Rentala, Srinath M. Ramaswamy, Baher S. Haroun, Eungyoung Seok
  • Phase averaged pulse width modulator
    Patent number: 8471747
    Abstract: A method is provided. A noise shaped signal having a plurality of instants is generated with each instant being associated with at least one of a plurality of output levels. A next phase is selected for each instant, where each next phase is a circularly shifted phase based at least in part on a previous phase for the associated output level for its instant. A plurality of PWM signals is then generated using the phase for each instant, and an amplified signal is generated from the plurality of PWM signals.
    Type: Grant
    Filed: December 12, 2011
    Date of Patent: June 25, 2013
    Assignee: Texas Instruments Incorporated
    Inventors: Lei Ding, Rahmi Hezar, Joonhoi Hur, Baher S. Haroun
  • Terahertz phased array system
    Patent number: 8472884
    Abstract: Microelectronics have now developed to the point where radiation within the terahertz frequency range can be generated and used. Here, an integrated circuit or IC is provided that includes a phased array radar system, which uses terahertz radiation. In order to accomplish this, several features are employed; namely, a lower frequency signal is propagated to transceivers, which multiplies the frequency up to the desired frequency range. To overcome the losses from the multiplication, an injection locked voltage controlled oscillator (ILVCO) is used, and a high frequency power amplifier (PA) can then be used to amplify the signal for transmission.
    Type: Grant
    Filed: September 9, 2010
    Date of Patent: June 25, 2013
    Assignee: Texas Instruments Incorporated
    Inventors: Brian P. Ginsburg, Vijay B. Rentala, Srinath M. Ramaswamy, Baher S. Haroun, Eunyoung Seok
  • Wireless chip-to-chip switching
    Patent number: 8472437
    Abstract: Embodiments of the invention provide a system and method for chip to chip communications in electronic circuits. A router or switch receives data packets at input port ASICs. A routing table on the input port ASIC or on a routing ASIC is used to identify a destination port ASIC based upon header information in the data packet. The data packet is transmitted from the input port ASIC to the destination port ASIC using millimeter wave signals that are transmitted across a waveguide or a wireless interface.
    Type: Grant
    Filed: February 14, 2011
    Date of Patent: June 25, 2013
    Assignee: Texas Instruments Incorporated
    Inventors: Nirmal Chindhu Warke, Srinath Hosur, Martin J. Izzard, Siraj Akhtar, Baher S. Haroun, Marco Corsi
  • DIGITAL TIME-INTERLEAVED RF-PWM TRANSMITTER
    Publication number: 20130156089
    Abstract: A method for transmitting radio frequency (RF) signals is provided. In-phase (I) and quadrature (Q) signals are received and filtered using sigma-delta modulation. I and Q pulse width modulation signals are generated from the filtered I and Q signals and interleaved so as to generate a time-interleaved signal. The time-interleaved signal is then amplified to generate the RF signals.
    Type: Application
    Filed: December 15, 2011
    Publication date: June 20, 2013
    Applicant: Texas Instruments Incorporated
    Inventors: Rahmi Hezar, Lei Ding, Joonhoi Hur, Baher S. Haroun
  • Monolithic FM-band transmit power amplifier for mobile cellular devices and method of operation thereof
    Patent number: 8467749
    Abstract: An FM-band transmit power amplifier and a method of transmitting in multiple bands. In one embodiment, the FM-band transmit power amplifier has an input and an output and includes: (1) a pre-filter including a charge-pump based integrator coupled to the input and a passive notch filter having a notch frequency in a band other than an FM band and (2) an output driver coupled between the passive pre-filter and the output and having PMOS and NMOS transconductors configured to receive an output from the passive filter.
    Type: Grant
    Filed: October 16, 2008
    Date of Patent: June 18, 2013
    Assignee: Texas Instruments Incorporated
    Inventors: Mehmet T. Ozgun, Baher S. Haroun
  • PHASE AVERAGED PULSE WIDTH MODULATOR
    Publication number: 20130147533
    Abstract: A method is provided. A noise shaped signal having a plurality of instants is generated with each instant being associated with at least one of a plurality of output levels. A next phase is selected for each instant, where each next phase is a circularly shifted phase based at least in part on a previous phase for the associated output level for its instant. A plurality of PWM signals is then generated using the phase for each instant, and an amplified signal is generated from the plurality of PWM signals.
    Type: Application
    Filed: December 12, 2011
    Publication date: June 13, 2013
    Applicant: Texas Instruments Incorporated
    Inventors: Lei Ding, Rahmi Hezar, Joonhoi Hur, Baher S. Haroun
  • DELAY LOCKED LOOP
    Publication number: 20130120186
    Abstract: A method for providing a plurality of narrow pulses is provided. A first pulse having a first width is received by a delay line having a plurality of delay cells. This first pulse has a first width. In response to this first pulse, a plurality of second pulses is generated by the delay line, where each second pulse has a second width that is less than the first width. First and second delay pulses are also generated by the delay line, and a delay for each delay cell in the delay line can then be adjusted if a rising edge of the second delay pulse is misaligned with a falling edge of the first delay pulse.
    Type: Application
    Filed: November 14, 2011
    Publication date: May 16, 2013
    Applicant: Texas Instruments Incorporated
    Inventors: Vijay B. Rentala, Srinath M. Ramaswamy, Brian P. Ginsburg, Eunyoung Seok, Baher S. Haroun
  • REDUCED OFFSET COMPARATOR
    Publication number: 20130099824
    Abstract: An apparatus is provided. The apparatus comprises backend circuitry and pairs of redundant input circuits. Each pair of redundant input circuits is configured to form a differential pair of transistors, and each redundant input circuit includes a multiplexer and a set of transistors. The multiplexer is coupled to the backend circuitry, and each transistor from the set of transistors has a first passive electrode, a second passive electrode, and a control electrode. The first passive electrode of each transistor from the set of transistors is coupled to the multiplexer, and the control electrodes from the set of transistors are coupled together.
    Type: Application
    Filed: October 25, 2011
    Publication date: April 25, 2013
    Applicant: Texas Instruments Incorporated
    Inventors: Robert F. Payne, Baher S. Haroun
  • Taps with link update, data, instruction, and augmentation registers
    Patent number: 8386865
    Abstract: An architecture for testing a plurality of circuits on an integrated circuit is described. The architecture includes a TAP Linking Module located between test pins on the integrated circuit and 1149.1 Test Access Ports (TAP) of the plurality of circuits to be tested. The TAP Linking Module operates in response to 1149.1 scan operations from a tester connected to the test pins to selectively switch between 1149.1 TAPs to enable test access between the tester and plurality of circuits. The TAP Linking Module's 1149.1 TAP switching operation is based upon augmenting 1149.1 instruction patterns to affix an additional bit or bits of information which is used by the TAP Linking Module for performing the TAP switching operation.
    Type: Grant
    Filed: July 26, 2012
    Date of Patent: February 26, 2013
    Assignee: Texas Instruments Incorporated
    Inventors: Baher S. Haroun, Lee D. Whetsel
  • PIPELINED CONTINUOUS-TIME SIGMA DELTA MODULATOR
    Publication number: 20120326906
    Abstract: Traditionally, pipelined continuous-time (CT) sigma-delta modulators (SDM) have been difficult to build due at least in part to the difficulties in calibrating the pipeline. Here, however, a pipelined CT SDM is provided that has an architecture that is conducing to being calibrated. Namely, the system includes a digital filter and other features that can be adjusted to account for input imbalance errors and well as quantization leakage noise.
    Type: Application
    Filed: August 31, 2012
    Publication date: December 27, 2012
    Applicant: Texas Instruments Incorporated
    Inventors: Baher S. Haroun, Venkatesh Srinivasan, Patrick Satarzadeh, Marco Corsi
  • CURRENT MODE BLIXER WITH NOISE CANCELLATION
    Publication number: 20120322400
    Abstract: Blixers, which are a relatively recent development, have not be studied as extensively as many older circuit designs. Here, a blixer is provided that improves linearity and reduces noise over other conventional blixer designs. To accomplish this, the blixer provided here uses a differential amplifier and/or a dummy path within its mixing circuit to perform noise reduction (and improve linearity).
    Type: Application
    Filed: June 16, 2011
    Publication date: December 20, 2012
    Applicant: Texas Instruments Incorporated
    Inventors: Vijay B. Rentala, Venkatesh Srinivasan, Srinath M. Ramaswamy, Baher S. Haroun
  • TOUCH SCREEN
    Publication number: 20120313895
    Abstract: A method for determining the location of an object on a touch panel is provided. Initially, a pulse of terahertz radiation is transmitted through a touch panel, which formed of a dielectric material such that the pulse generates a evanescent field in a region adjacent to a touch surface of the touch panel. A reflected pulse is generated by an object located within the region adjacent to the touch surface of the touch panel, and a position of the object on the touch surface of the touch panel is triangulated at least in part from the reflected pulse.
    Type: Application
    Filed: June 10, 2011
    Publication date: December 13, 2012
    Applicant: Texas Instruments Incorporated
    Inventors: Baher S. Haroun, Marco Corsi, Brian P. Ginsburg, Vijay B. Rentala, Srinath M. Ramaswamy, Eunyoung Seok
  • Multiplexer input linking circuitry to IC and core TAP domains
    Patent number: 8332700
    Abstract: IEEE 1149.1 Test Access Ports (TAPs) may be utilized at both IC and intellectual property core design levels. TAPs serve as serial communication ports for accessing a variety of embedded circuitry within ICs and cores including; IEEE 1149.1 boundary scan circuitry, built in test circuitry, internal scan circuitry, IEEE 1149.4 mixed signal test circuitry, IEEE P5001 in-circuit emulation circuitry, and IEEE P1532 in-system programming circuitry. Selectable access to TAPs within ICs is desirable since in many instances being able to access only the desired TAP(s) leads to improvements in the way testing, emulation, and programming may be performed within an IC. A TAP linking module is described that allows TAPs embedded within an IC to be selectively accessed using 1149.1 instruction scan operations.
    Type: Grant
    Filed: December 19, 2011
    Date of Patent: December 11, 2012
    Assignee: Texas Instruments Incorporated
    Inventors: Lee D. Whetsel, Baher S. Haroun, Brian J. Lasher, Anjali Kinra