Patents by Inventor Ramin Khoini-Poorfard

Ramin Khoini-Poorfard 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: 20190229415
    Abstract: An apparatus includes a first integrated circuit (IC) that includes a first radio-frequency (RF) circuit to process RF signals, a first antenna port to couple to one or more antennas, and a first switch integrated in the first IC and coupled to the first antenna port. The apparatus further includes a second IC that includes a second RF circuit to process RF signals, a second antenna port to couple to the one or more antennas, and a second switch integrated in the second IC and coupled to the second antenna port.
    Type: Application
    Filed: March 30, 2019
    Publication date: July 25, 2019
    Inventors: David Le Goff, John M. Khoury, Mustafa Koroglu, Abdulkerim Coban, Ramin Khoini-Poorfard
  • Patent number: 10278200
    Abstract: A system and method of minimizing interference and retries in an environment where two or more network protocols utilize the same frequency spectrum is disclosed. A lower-power network controller is co-located with a WIFI controller. The lower-power network controller parses incoming packets as they are received and generates a request signal once it is determined that the incoming packet is destined for this device. This maximizes the likelihood that no WIFI traffic will occur while the incoming packet is being received.
    Type: Grant
    Filed: May 10, 2017
    Date of Patent: April 30, 2019
    Assignee: Silicon Laboratories Inc.
    Inventors: Terry Lee Dickey, Ramin Khoini-Poorfard, Jason Christopher Rock
  • Patent number: 10033421
    Abstract: In one example, a semiconductor die includes multi-standard, multi-channel expandable television/satellite receiver that can be flexibly implemented in a number of different configurations to enable incorporation into a plurality of different systems. The semiconductor die may include multiple tuners to receive and tune a terrestrial radio frequency (RF) signal and a satellite RF signal. These tuners may include different frequency synthesizers including voltage controlled oscillators (VCOs) to generate VCO signals at different frequencies, mixers to downconvert the RF signals to baseband signals using the VCO signals. In an implementation, the semiconductor die may further include shared circuitry coupled to the tuners to digitize, process and demodulate the baseband signals.
    Type: Grant
    Filed: May 31, 2016
    Date of Patent: July 24, 2018
    Assignee: Silicon Laboratories Inc.
    Inventors: Vitor Pereira, Mustafa Koroglu, Ruifeng Sun, Ramin Khoini-Poorfard, Abdulkerim Coban, Yu Su, Krishna Pentakota
  • Publication number: 20170346520
    Abstract: In one example, a semiconductor die includes multi-standard, multi-channel expandable television/satellite receiver that can be flexibly implemented in a number of different configurations to enable incorporation into a plurality of different systems. The semiconductor die may include multiple tuners to receive and tune a terrestrial radio frequency (RF) signal and a satellite RF signal. These tuners may include different frequency synthesizers including voltage controlled oscillators (VCOs) to generate VCO signals at different frequencies, mixers to downconvert the RF signals to baseband signals using the VCO signals. In an implementation, the semiconductor die may further include shared circuitry coupled to the tuners to digitize, process and demodulate the baseband signals.
    Type: Application
    Filed: May 31, 2016
    Publication date: November 30, 2017
    Inventors: Vitor Pereira, Mustafa Koroglu, Ruifeng Sun, Ramin Khoini-Poorfard, Abdulkerim Coban, Yu Su, Krishna Pentakota
  • Publication number: 20170290038
    Abstract: A system and method of minimizing interference and retries in an environment where two or more network protocols utilize the same frequency spectrum is disclosed. A lower-power network controller is co-located with a WIFI controller. The lower-power network controller parses incoming packets as they are received and generates a request signal once it is determined that the incoming packet is destined for this device. This maximizes the likelihood that no WIFI traffic will occur while the incoming packet is being received.
    Type: Application
    Filed: May 10, 2017
    Publication date: October 5, 2017
    Inventors: Terry Lee Dickey, Ramin Khoini-Poorfard, Jason Christopher Rock
  • Patent number: 9647623
    Abstract: A signal processor for a radio frequency (RF) receiver includes a plurality of distributed signal processing elements, in which a first one receives an input signal and a last one provides an output signal, and a plurality of gain elements interspersed between pairs of said plurality of distributed signal processing elements. The signal processor also includes a like plurality of peak detectors coupled to outputs of corresponding ones of said plurality of gain elements, and an automatic gain controller having inputs coupled to outputs of each of the peak detectors, and outputs coupled to each of the plurality of gain elements. The automatic gain controller independently controls each of the plurality of gain elements to form a like plurality of independent automatic gain control (AGC) loops.
    Type: Grant
    Filed: September 30, 2009
    Date of Patent: May 9, 2017
    Assignee: Silicon Laboratories Inc.
    Inventors: Abdulkerim L. Coban, Alessandro Piovaccari, Ramin Khoini-Poorfard, James T. Kao
  • Publication number: 20170110792
    Abstract: An apparatus includes a first integrated circuit (IC) that includes a first radio-frequency (RF) circuit to process RF signals, a first antenna port to couple to one or more antennas, and a first switch integrated in the first IC and coupled to the first antenna port. The apparatus further includes a second IC that includes a second RF circuit to process RF signals, a second antenna port to couple to the one or more antennas, and a second switch integrated in the second IC and coupled to the second antenna port.
    Type: Application
    Filed: December 23, 2016
    Publication date: April 20, 2017
    Inventors: David Le Goff, John M. Khoury, Mustafa Koroglu, Abdulkerim Coban, Ramin Khoini-Poorfard
  • Publication number: 20170093032
    Abstract: An apparatus includes an integrated circuit (IC), which includes a radio-frequency (RF) circuit to process RF signals, and a balun that has first and second ports. First and second switches are coupled to the second port of the balun. The first port of the balun is coupled to the RF circuit.
    Type: Application
    Filed: September 29, 2015
    Publication date: March 30, 2017
    Inventors: John M. Khoury, Mustafa Koroglu, Abdulkerim Coban, Ramin Khoini-Poorfard
  • Patent number: 9491394
    Abstract: In one embodiment, an internal buffer may be provided within an integrated circuit (IC) to convert a signal to an output current to be output via a pin of the IC, under control of a switch which can be controlled based on a configuration setting of the IC, and may selectively directly couple the signal to the pin when the IC is coupled to an external driver circuit.
    Type: Grant
    Filed: April 16, 2014
    Date of Patent: November 8, 2016
    Assignee: Silicon Laboratories Inc.
    Inventors: AndrĂ¡s Vince Horvath, Abdulkerim L. Coban, Pio Balmelli, Ramin Khoini-Poorfard, Alessandro Piovaccari
  • Patent number: 9231579
    Abstract: Techniques relating to buffer circuits. In one embodiment, a circuit includes a first transistor configured as a source follower and a feed-forward path coupled to the gate terminal of the first transistor and the drain terminal of the first transistor. In this embodiment, the feed-forward path includes circuitry configured to decouple the feed-forward path from a DC component of an input signal to the gate terminal of the first transistor. In this embodiment, the circuitry is configured to reduce a drain-source voltage of the first transistor based on the input signal. In some embodiment, the feed-forward path includes a second transistor configured as a source follower and the source terminal of the second transistor is coupled to the drain terminal of the first transistor. In various embodiments, reducing the drain-source voltage may improve linearity of the first transistor.
    Type: Grant
    Filed: November 7, 2013
    Date of Patent: January 5, 2016
    Assignee: Silicon Laboratories Inc.
    Inventors: Ruifeng Sun, Mustafa H. Koroglu, Ramin Khoini Poorfard, Yu Su, Krishna Pentakota, Pio Balmelli
  • Patent number: 9219512
    Abstract: In one form, an integrated receiver includes a tracking bandpass filter, a tunable lowpass filter, and a mixer formed on a single integrated circuit chip. The tracking bandpass filter has an input for receiving a radio frequency (RF) input signal, and an output, and comprises a variable capacitor having a capacitance that varies in response to a bandpass frequency control signal, in parallel with an integrated inductor. The integrated inductor comprises a plurality of windings formed in a plurality of metal layers. The tunable lowpass filter has an input coupled to the output of the tracking bandpass filter, and an output and having a tuning input for receiving a cutoff frequency signal. The mixer has a signal input coupled to the output of the tunable lowpass filter, a local oscillator input for receiving a local oscillator signal, and a signal output for providing a converted RF signal.
    Type: Grant
    Filed: February 3, 2015
    Date of Patent: December 22, 2015
    Assignee: SILICON LABORATORIES INC.
    Inventors: Ramin Khoini-Poorfard, Alessandro Piovaccari, Aslamali A. Rafi, Mustafa H. Koroglu, David S. Trager, Abdulkerim L. Coban
  • Patent number: 9204080
    Abstract: Systems and methods are disclosed for MCM (multiple chip module) packages having multiple stacked demodulator dies that share one or more MCM pins. The shared pins can include clock generation pins, clock input/output pins, receive signal path input pins, voltage supply pins, ground supply pins, and/or any other desired pins. In addition to reducing footprint sizes for printed circuit board (PCB) applications, the multi-demodulator MCM package embodiments described herein also allow for improved routing of connection traces on PCBs.
    Type: Grant
    Filed: August 6, 2014
    Date of Patent: December 1, 2015
    Assignee: Silicon Laboratories Inc.
    Inventors: Vitor Pereira, Ramin Khoini-Poorfard, Eric Mauger
  • Patent number: 9094634
    Abstract: An amplifier includes a negative gain amplifier, a load element, and a transconductance device. The negative gain amplifier has an input and an output. The load element has a first terminal coupled to a power supply voltage terminal, and a second terminal. The transconductance device has a first current electrode coupled to the second terminal of the load element, a control electrode coupled to the output of the negative gain amplifier, and a second current electrode coupled to the input of the negative gain amplifier.
    Type: Grant
    Filed: June 5, 2013
    Date of Patent: July 28, 2015
    Assignee: SILICON LABORATORIES INC.
    Inventors: Yu Su, Mustafa H. Koroglu, Ruifeng Sun, Krishna Pentakota, Pio Balmelli, Ramin Khoini-Poorfard
  • Publication number: 20150147992
    Abstract: In one form, an integrated receiver includes a tracking bandpass filter, a tunable lowpass filter, and a mixer formed on a single integrated circuit chip. The tracking bandpass filter has an input for receiving a radio frequency (RF) input signal, and an output, and comprises a variable capacitor having a capacitance that varies in response to a bandpass frequency control signal, in parallel with an integrated inductor. The integrated inductor comprises a plurality of windings formed in a plurality of metal layers. The tunable lowpass filter has an input coupled to the output of the tracking bandpass filter, and an output and having a tuning input for receiving a cutoff frequency signal. The mixer has a signal input coupled to the output of the tunable lowpass filter, a local oscillator input for receiving a local oscillator signal, and a signal output for providing a converted RF signal.
    Type: Application
    Filed: February 3, 2015
    Publication date: May 28, 2015
    Applicant: SILICON LABORATORIES INC.
    Inventors: Ramin Khoini-Poorfard, Alessandro Piovaccari, Aslamali A. Rafi, Mustafa H. Koroglu, David S. Trager, Abdulkerim L. Coban
  • Patent number: 9036091
    Abstract: An integrated circuit includes a tuner, a digital television (DTV) demodulator, an analog television (ATV) demodulator, and a controller. The tuner includes an input for receiving a radio frequency (RF) signal including at least one of an analog television signal and digital television signal, and including a first output terminal and a second output terminal. The DTV demodulator includes a DTV input coupled to the first output terminal of the tuner and includes a DTV output terminal. The ATV demodulator includes an ATV input coupled to the second output terminal of the tuner and includes an ATV output terminal. The controller is coupled to the tuner, the DTV demodulator, and the ATV demodulator to configure the tuner and at least one of the DTV demodulator and the ATV demodulator for receiving television content in a selected television format.
    Type: Grant
    Filed: January 6, 2011
    Date of Patent: May 19, 2015
    Assignee: Silicon Laboratories Inc.
    Inventors: Alan F. Hendrickson, Alessandro Piovaccari, Ramin Khoini-Poorfard, Mitchell Reid, Frederick Alan Rush, Jean-Marc Guyot, David Le Goff, Michael Robert May, Henry William Singor, Qi Cai, Peter Jozef Vancorenland, Chunyu Xin, Pascal Blouin
  • Publication number: 20150123714
    Abstract: Techniques relating to buffer circuits. In one embodiment, a circuit includes a first transistor configured as a source follower and a feed-forward path coupled to the gate terminal of the first transistor and the drain terminal of the first transistor. In this embodiment, the feed-forward path includes circuitry configured to decouple the feed-forward path from a DC component of an input signal to the gate terminal of the first transistor. In this embodiment, the circuitry is configured to reduce a drain-source voltage of the first transistor based on the input signal. In some embodiment, the feed-forward path includes a second transistor configured as a source follower and the source terminal of the second transistor is coupled to the drain terminal of the first transistor. In various embodiments, reducing the drain-source voltage may improve linearity of the first transistor.
    Type: Application
    Filed: November 7, 2013
    Publication date: May 7, 2015
    Applicant: SILICON LABORATORIES INC.
    Inventors: Ruifeng Sun, Mustafa H. Koroglu, Ramin Khoini Poorfard, Yu Su, Krishna Pentakota, Pio Balmelli
  • Publication number: 20150085195
    Abstract: Systems and methods are disclosed for MCM (multiple chip module) packages having multiple stacked demodulator dies that share one or more MCM pins. The shared pins can include clock generation pins, clock input/output pins, receive signal path input pins, voltage supply pins, ground supply pins, and/or any other desired pins. In addition to reducing footprint sizes for printed circuit board (PCB) applications, the multi-demodulator MCM package embodiments described herein also allow for improved routing of connection traces on PCBs.
    Type: Application
    Filed: August 6, 2014
    Publication date: March 26, 2015
    Inventors: Vitor Pereira, Ramin Khoini-Poorfard, Eric Mauger
  • Patent number: 8983419
    Abstract: An integrated receiver includes a first signal processing path, a second signal processing path, and a controller. The first signal processing path has an input and an output for providing a first processed signal, and comprises a first tracking bandpass filter having a first integrated inductor formed with windings in a first number of metal layers of the integrated receiver. The second signal processing path has an input and an output for providing a second processed signal, and comprises a second tracking bandpass filter having a second integrated inductor formed with windings in a second number of metal layers of the integrated receiver. The second number of windings is lower than the first number. The controller enables one of the first and second signal processing paths corresponding to a selected channel of a radio frequency (RF) input signal to provide an output signal.
    Type: Grant
    Filed: March 3, 2014
    Date of Patent: March 17, 2015
    Assignee: Silicon Laboratories Inc.
    Inventors: Ramin Khoini-Poorfard, Alessandro Piovaccari, Aslamali A. Rafi, Mustafa H. Koroglu, David S. Trager, Abdulkerim L. Coban
  • Publication number: 20140361838
    Abstract: An amplifier includes a negative gain amplifier, a load element, and a transconductance device. The negative gain amplifier has an input and an output. The load element has a first terminal coupled to a power supply voltage terminal, and a second terminal. The transconductance device has a first current electrode coupled to the second terminal of the load element, a control electrode coupled to the output of the negative gain amplifier, and a second current electrode coupled to the input of the negative gain amplifier.
    Type: Application
    Filed: June 5, 2013
    Publication date: December 11, 2014
    Inventors: Yu Su, Mustafa H. Koroglu, Ruifeng Sun, Krishna Pentakota, Pio Balmelli, Ramin Khoini-Poorfard
  • Patent number: 8848110
    Abstract: A receiver circuit includes an analog front-end and a digital processing unit. The analog front-end includes an input for receiving a radio frequency (RF) signal, a first control input for receiving a gain adjustment signal, a second control input for receiving a timing signal, and a signal output for providing a digital intermediate frequency (IF) signal. The analog front-end updates gains of a plurality of gain stages according to the gain adjustment signal and in synchronism with the timing signal. The digital processing unit is configured to produce at least one output signal derived from the digital IF signal. The digital processing unit includes a timing recovery circuit configured to generate the timing signal based on the digital IF signal to control timing of the updating gains of each of the plurality of adjustable gain stages.
    Type: Grant
    Filed: May 28, 2010
    Date of Patent: September 30, 2014
    Assignee: Silicon Laboratories Inc.
    Inventors: Ramin Khoini-Poorfard, Alan F. Hendrickson, Alessandro Piovaccari, David S. Trager, Aslamali A. Rafi, Abdulkerim L. Coban, David Le Goff