Patents by Inventor Adrian John Bergsma

Adrian John Bergsma 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: 10998862
    Abstract: Methods and systems are provided for generating an oscillating signal for use as a clock in digital logic timing. The oscillating signal is generated via a differential RC relaxation oscillator including an oscillator core and biasing circuitry. The oscillator core may be configured such that the oscillating signal it generates is substantially sinusoidal or pseudo-sinusoidal and contains less harmonic content relative to a square wave signal. The biasing circuitry may be configured to have a reduced dependence on temperature so that the biasing values it provides vary less with temperature.
    Type: Grant
    Filed: September 23, 2019
    Date of Patent: May 4, 2021
    Assignee: SKYWORKS SOLUTIONS, INC.
    Inventors: Bang Li Liang, Thomas Obkircher, Adrian John Bergsma, Peter Harris Robert Popplewell
  • Publication number: 20200395935
    Abstract: A clamping circuit comprises a first field-effect transistor (FET) having a gate, a source, and a drain, a diode, a first voltage source, and coupling circuitry configured to couple the first voltage source to the drain of the first FET and the diode to the source of the first FET.
    Type: Application
    Filed: June 12, 2020
    Publication date: December 17, 2020
    Inventor: Adrian John Bergsma
  • Patent number: 10812030
    Abstract: Aspects and examples described herein provide a variable gain amplifier circuit and assembly. In one example, a variable gain amplifier circuit includes a signal input, a signal output, and a variable gain amplifier including a plurality of unit cell groups coupled between the signal input and the signal output, the variable gain amplifier configured to provide an adjustable gain to a signal received at the signal input during each of a plurality of amplify modes of the variable gain amplifier, each of the plurality of amplify modes corresponding to at least one unit cell group of the plurality of unit cell groups. A bypass path including a fixed attenuator is coupled in parallel with the variable gain amplifier between the signal input and the signal output to selectively couple the signal input to the signal output through the fixed attenuator during a bypass mode.
    Type: Grant
    Filed: August 27, 2019
    Date of Patent: October 20, 2020
    Assignee: SKYWORKS SOLUTIONS, INC.
    Inventors: Peihua Ye, Patrick Marcus Naraine, Adrian John Bergsma, Peter Harris Robert Popplewell, Thomas Obkircher
  • Publication number: 20200272182
    Abstract: A front-end module comprises a low-dropout (LDO) voltage regulator, a reference current generator, a power amplifier, and a voltage reference configured to provide a reference voltage to the LDO voltage regulator and the reference current generator. The LDO voltage regulator, reference current generator, power amplifier, and voltage reference are integrated on a first semiconductor die.
    Type: Application
    Filed: February 26, 2020
    Publication date: August 27, 2020
    Inventors: Bang Li Liang, Yasser Khairat Soliman, Adrian John Bergsma, Haoran Yu, Hassan Sarbishaei
  • Patent number: 10756688
    Abstract: A broadband amplifier assembly is provided that includes a fixed gain amplifier coupled to an adjustable attenuator which is further coupled to a power amplifier. The adjustable attenuator includes a plurality of attenuation cells directly coupled in series between the input and the output of the adjustable attenuator.
    Type: Grant
    Filed: July 12, 2019
    Date of Patent: August 25, 2020
    Assignee: SKYWORKS SOLUTIONS, INC.
    Inventor: Adrian John Bergsma
  • Patent number: 10651816
    Abstract: An attenuation cell is provided for use in a switched attenuator. The attenuation cell includes an attenuation path that has an input, a first switch, a resistive network, a second switch, and an output. The resistive network provides a desired attenuation from the input to the output. The attenuation cell also includes a bypass path in parallel with the attenuation path with a bypass switch between the input and the output. The attenuation cell also has a shunt switch coupled between the resistive network and a reference node to selectively connect the resistive network to the reference node.
    Type: Grant
    Filed: July 25, 2019
    Date of Patent: May 12, 2020
    Assignee: SKYWORKS SOLUTIONS, INC.
    Inventor: Adrian John Bergsma
  • Patent number: 10560202
    Abstract: Systems and methods are provided for reducing the effects of an impedance mismatch between a communications system and a shared communications medium. A communication system, such as a transceiver within a cable modem, switches between various operating modes including a transmit mode, a receive mode, and a standby mode. The standby mode may be used while the transceiver is in an idle state between modes, such as while changing an amplifier gain states in between transmissions. While transitioning between modes, the impedance presented by the communications system can temporarily fluctuate causing unwanted signal reflections to propagate out of the communications system and on to the shared medium. Circuitry within the communications system, such as transmission circuitry including an adjustable attenuator, may be placed into a hybrid attenuation-isolation mode during the transition causing the magnitude of any unwanted signal reflections to be attenuated and reducing the impact on the shared medium.
    Type: Grant
    Filed: February 22, 2019
    Date of Patent: February 11, 2020
    Assignee: SKYWORKS SOLUTIONS, INC.
    Inventors: Adrian John Bergsma, Peihua Ye, Thomas Obkircher, Peter Harris Robert Popplewell, Gregory Edward Babcock, William J. Domino
  • Patent number: 10554188
    Abstract: Systems and methods for suppressing transient outputs from an amplifier system are provided. An amplifier having a plurality of bias levels may be controlled to initiate a change in the level of a bias signal provided to the amplifier. The level of the bias signal is ramped from an initial bias level to a final bias level over numerous steps. The steps include at least one step in which the level of the bias signal is between the initial bias level and the final bias level. An amplifier system having multiple stages may be controlled to enable each stage and selectively couple each stage in a sequence that couples an output stage to an output terminal at the completion of the sequence.
    Type: Grant
    Filed: November 9, 2017
    Date of Patent: February 4, 2020
    Assignee: SKYWORKS SOLUTIONS, INC.
    Inventors: Adrian John Bergsma, Thomas Obkircher, Peihua Ye, Bang Li Liang, Peter Harris Robert Popplewell, William J. Domino
  • Publication number: 20200021249
    Abstract: Methods and systems are provided for generating an oscillating signal for use as a clock in digital logic timing. The oscillating signal is generated via a differential RC relaxation oscillator including an oscillator core and biasing circuitry. The oscillator core may be configured such that the oscillating signal it generates is substantially sinusoidal or pseudo-sinusoidal and contains less harmonic content relative to a square wave signal. The biasing circuitry may be configured to have a reduced dependence on temperature so that the biasing values it provides vary less with temperature.
    Type: Application
    Filed: September 23, 2019
    Publication date: January 16, 2020
    Inventors: Bang Li Liang, Thomas Obkircher, Adrian John Bergsma, Peter Harris Robert Popplewell
  • Publication number: 20190386624
    Abstract: Aspects and examples described herein provide a variable gain amplifier circuit and assembly. In one example, a variable gain amplifier circuit includes a signal input, a signal output, and a variable gain amplifier including a plurality of unit cell groups coupled between the signal input and the signal output, the variable gain amplifier configured to provide an adjustable gain to a signal received at the signal input during each of a plurality of amplify modes of the variable gain amplifier, each of the plurality of amplify modes corresponding to at least one unit cell group of the plurality of unit cell groups. A bypass path including a fixed attenuator is coupled in parallel with the variable gain amplifier between the signal input and the signal output to selectively couple the signal input to the signal output through the fixed attenuator during a bypass mode.
    Type: Application
    Filed: August 27, 2019
    Publication date: December 19, 2019
    Inventors: Peihua Ye, Patrick Marcus Naraine, Adrian John Bergsma, Peter Harris Robert Popplewell, Thomas Obkircher
  • Publication number: 20190377014
    Abstract: In some embodiments, a compensated power detector can include a power detector that includes a first detection cell having a bias input and an output, and a second detection cell having a signal input, a bias input and an output. The power detector can further include an error amplifier having a first input coupled to the output of the first detection cell, and a second input for receiving a reference voltage. The error amplifier can be configured to provide an output voltage to each of the bias inputs of the first and second detection cells, such that an output of the second detection cell is representative of power of a radio-frequency signal received at the signal input with an adjustment for one or more non-signal effects as measured by the first detection cell and the error amplifier.
    Type: Application
    Filed: June 10, 2019
    Publication date: December 12, 2019
    Inventor: Adrian John BERGSMA
  • Publication number: 20190348962
    Abstract: An attenuation cell is provided for use in a switched attenuator. The attenuation cell includes an attenuation path that has an input, a first switch, a resistive network, a second switch, and an output. The resistive network provides a desired attenuation from the input to the output. The attenuation cell also includes a bypass path in parallel with the attenuation path with a bypass switch between the input and the output. The attenuation cell also has a shunt switch coupled between the resistive network and a reference node to selectively connect the resistive network to the reference node.
    Type: Application
    Filed: July 25, 2019
    Publication date: November 14, 2019
    Inventor: Adrian John Bergsma
  • Patent number: 10476507
    Abstract: Methods and apparatuses are provided for establishing operational states of a device having a plurality of functional operating units. An input is configured to receive an identifier of a desired operational state of the device. A number of control outputs are configured to couple to one or more of the plurality of functional operating units having two or more operational states. A number of reference inputs are each configured to receive a reference signal, and at least one reference signal is mapped, based on the identifier, to at least one control output. Each control output provides a control signal that places each functional operating unit in a selected state to achieve the desired operational state of the device.
    Type: Grant
    Filed: January 24, 2019
    Date of Patent: November 12, 2019
    Assignee: SKYWORKS SOLUTIONS, INC.
    Inventor: Adrian John Bergsma
  • Publication number: 20190341895
    Abstract: A broadband amplifier assembly is provided that includes a fixed gain amplifier coupled to an adjustable attenuator which is further coupled to a power amplifier. The adjustable attenuator includes a plurality of attenuation cells directly coupled in series between the input and the output of the adjustable attenuator.
    Type: Application
    Filed: July 12, 2019
    Publication date: November 7, 2019
    Inventor: Adrian John Bergsma
  • Publication number: 20190334493
    Abstract: Amplifier systems and methods are provided that include a fixed gain amplification stage coupled to an adjustable attenuation stage further coupled to a variable gain amplification stage. A controller controls an amount of attenuation provided by the adjustable attenuation stage and an amount of gain provided by the variable gain amplification stage to maintain any of various noise, efficiency, and/or linearity requirements of the amplifier system.
    Type: Application
    Filed: July 10, 2019
    Publication date: October 31, 2019
    Inventors: William J. Domino, Thomas Obkircher, Adrian John Bergsma, Peihua Ye
  • Patent number: 10461700
    Abstract: Methods and systems are provided for generating an oscillating signal for use as a clock in digital logic timing. The oscillating signal is generated via a differential RC relaxation oscillator including an oscillator core and biasing circuitry. The oscillator core may be configured such that the oscillating signal it generates is substantially sinusoidal or pseudo-sinusoidal and contains less harmonic content relative to a square wave signal. The biasing circuitry may be configured to have a reduced dependence on temperature so that the biasing values it provides vary less with temperature.
    Type: Grant
    Filed: November 9, 2017
    Date of Patent: October 29, 2019
    Assignee: SKYWORKS SOLUTIONS, INC.
    Inventors: Bang Li Liang, Thomas Obkircher, Adrian John Bergsma, Peter Harris Robert Popplewell
  • Patent number: 10439576
    Abstract: Aspects and examples described herein provide a variable gain amplifier circuit and assembly. In one example, a variable gain amplifier circuit includes a signal input, a signal output, and a variable gain amplifier including a plurality of unit cell groups coupled between the signal input and the signal output, the variable gain amplifier configured to provide an adjustable gain to a signal received at the signal input during each of a plurality of amplify modes of the variable gain amplifier, each of the plurality of amplify modes corresponding to at least one unit cell group of the plurality of unit cell groups. A bypass path including a fixed attenuator is coupled in parallel with the variable gain amplifier between the signal input and the signal output to selectively couple the signal input to the signal output through the fixed attenuator during a bypass mode.
    Type: Grant
    Filed: November 9, 2017
    Date of Patent: October 8, 2019
    Assignee: SKYWORKS SOLUTIONS, INC.
    Inventors: Peihua Ye, Patrick Marcus Naraine, Adrian John Bergsma, Peter Harris Robert Popplewell, Thomas Obkircher
  • Patent number: 10396735
    Abstract: A broadband amplifier assembly is provided that includes a fixed gain amplifier coupled to an adjustable attenuator which is further coupled to a power amplifier. The adjustable attenuator includes a plurality of attenuation cells directly coupled in series between the input and the output of the adjustable attenuator.
    Type: Grant
    Filed: November 9, 2017
    Date of Patent: August 27, 2019
    Assignee: SKYWORKS SOLUTIONS, INC.
    Inventor: Adrian John Bergsma
  • Patent number: 10396737
    Abstract: Amplifier systems and methods are provided that include a fixed gain amplification stage coupled to an adjustable attenuation stage further coupled to a variable gain amplification stage. A controller controls an amount of attenuation provided by the adjustable attenuation stage and an amount of gain provided by the variable gain amplification stage to maintain any of various noise, efficiency, and/or linearity requirements of the amplifier system.
    Type: Grant
    Filed: November 9, 2017
    Date of Patent: August 27, 2019
    Assignee: SKYWORKS SOLUTIONS, INC.
    Inventors: William J. Domino, Thomas Obkircher, Adrian John Bergsma, Peihua Ye
  • Patent number: 10382003
    Abstract: An attenuation cell is provided for use in a switched attenuator. The attenuation cell includes an attenuation path that has an input, a first switch, a resistive network, a second switch, and an output. The resistive network provides a desired attenuation from the input to the output. The attenuation cell also includes a bypass path in parallel with the attenuation path with a bypass switch between the input and the output. The attenuation cell also has a shunt switch coupled between the resistive network and a reference node to selectively connect the resistive network to the reference node.
    Type: Grant
    Filed: December 19, 2018
    Date of Patent: August 13, 2019
    Assignee: SKYWORKS SOLUTIONS, INC.
    Inventor: Adrian John Bergsma