Patents by Inventor Arnoldus Venes
Arnoldus Venes 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).
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Patent number: 8971832Abstract: An integrated communications system. Comprising a substrate having a receiver disposed on the substrate for converting a received signal to an IF signal. Coupled to a VGA for low voltage applications and coupled to the receiver for processing the IF signal. The VGA includes a bank pair having a first bank of differential pairs of transistors and a second bank of differential pairs of transistors. The bank pair is cross-coupled in parallel, the IF signal is applied to the bank pair decoupled from a control signal used to control transconductance output gain of the bank pair over a range of input voltages. A digital IF demodulator is disposed on the substrate and coupled to the VGA for low voltage applications, for converting the IF signal to a demodulated baseband signal. And a transmitter is disposed on the substrate operating in cooperation with the receiver to establish a two way communications path.Type: GrantFiled: June 4, 2013Date of Patent: March 3, 2015Assignee: Broadcom CorporationInventors: Klaas Bult, Rudy Van De Plassche, Pieter Vorenkamp, Arnoldus Venes
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Patent number: 8711288Abstract: An integrated communications system. A substrate having a receiver disposed on the substrate for converting a received signal to an IF signal, a digital IF demodulator disposed on the substrate and coupled to the receiver for converting the IF signal to a demodulated baseband signal, and a transmitter disposed on the substrate operating in cooperation with the receiver to establish a two way communications path.Type: GrantFiled: September 7, 2006Date of Patent: April 29, 2014Assignee: Broadcom CorporationInventors: Pieter Vorenkamp, Myles H. Wakayama, Steven Jaffe, Frank Carr, Arnoldus Venes, Peter R. Kinget, Daniel J. Marz, Thinh Nguyen
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Publication number: 20140002194Abstract: An integrated communications system. Comprising a substrate having a receiver disposed on the substrate for converting a received signal to an IF signal. Coupled to a VGA for low voltage applications and coupled to the receiver for processing the IF signal. The VGA includes a bank pair having a first bank of differential pairs of transistors and a second bank of differential pairs of transistors. The bank pair is cross-coupled in parallel, the IF signal is applied to the bank pair decoupled from a control signal used to control transconductance output gain of the bank pair over a range of input voltages. A digital IF demodulator is disposed on the substrate and coupled to the VGA for low voltage applications, for converting the IF signal to a demodulated baseband signal. And a transmitter is disposed on the substrate operating in cooperation with the receiver to establish a two way communications path.Type: ApplicationFiled: June 4, 2013Publication date: January 2, 2014Inventors: Klaas Bult, Rudy Van de Plassche, Pieter Vorenkamp, Arnoldus Venes
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Patent number: 8489052Abstract: An integrated communications system. Comprising a substrate having a receiver disposed on the substrate for converting a received signal to an IF signal. Coupled to a VGA for low voltage applications and coupled to the receiver for processing the IF signal. The VGA includes a bank pair having a first bank of differential pairs of transistors and a second bank of differential pairs of transistors. The bank pair is cross-coupled in parallel, the IF signal is applied to the bank pair decoupled from a control signal used to control transconductance output gain of the bank pair over a range of input voltages. A digital IF demodulator is disposed on the substrate and coupled to the VGA for low voltage applications, for converting the IF signal to a demodulated baseband signal. And a transmitter is disposed on the substrate operating in cooperation with the receiver to establish a two way communications path.Type: GrantFiled: December 6, 2010Date of Patent: July 16, 2013Assignee: Broadcom CorporationInventors: Klaas Bult, Rudy van de Plassche, Pieter Vorenkamp, Arnoldus Venes
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Publication number: 20110304394Abstract: An integrated communications system. Comprising a substrate having a receiver disposed on the substrate for converting a received signal to an IF signal. Coupled to a VGA for low voltage applications and coupled to the receiver for processing the IF signal. The VGA includes a bank pair having a first bank of differential pairs of transistors and a second bank of differential pairs of transistors. The bank pair is cross-coupled in parallel, the IF signal is applied to the bank pair decoupled from a control signal used to control transconductance output gain of the bank pair over a range of input voltages. A digital IF demodulator is disposed on the substrate and coupled to the VGA for low voltage applications, for converting the IF signal to a demodulated baseband signal. And a transmitter is disposed on the substrate operating in cooperation with the receiver to establish a two way communications path.Type: ApplicationFiled: December 6, 2010Publication date: December 15, 2011Applicant: Broadcom CorporationInventors: Klaas Bult, Rudy van de Plassche, Pieter Vorenkamp, Arnoldus Venes
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Patent number: 8009824Abstract: A line driver comprises a driving amplifier receiving an input of the line driver, a current sense resistor connected between the driving amplifier output and the line driver output, and a feedback amplifier sensing the voltage across the current sense resistor and providing a corresponding feedback voltage that is proportional to the output current to the driving amplifier, thereby determining an output impedance at the line driver output. Precise output impedance can be realized by using a high precision resistor as the current sense resistor, and using resistive feedback amplifiers with accurate gains as the driving and feedback amplifiers. The resistance of the current sense resistor can be substantially less than the line driver output impedance, and the driving amplifier output voltage swing can be substantially less than twice the line driver output voltage swing.Type: GrantFiled: October 30, 2006Date of Patent: August 30, 2011Assignee: Broadcom CorporationInventors: Jiangfeng Wu, Tianwei Li, Arnoldus Venes
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Patent number: 7848724Abstract: An integrated communications system. Comprising a substrate having a receiver disposed on the substrate for converting a received signal to an IF signal. Coupled to a VGA for low voltage applications and coupled to the receiver for processing the IF signal. The VGA includes a bank pair having a first bank of differential pairs of transistors and a second bank of differential pairs of transistors. The bank pair is cross-coupled in parallel, the IF signal is applied to the bank pair decoupled from a control signal used to control transconductance output gain of the bank pair over a range of input voltages. A digital IF demodulator is disposed on the substrate and coupled to the VGA for low voltage applications, for converting the IF signal to a demodulated baseband signal. And a transmitter is disposed on the substrate operating in cooperation with the receiver to establish a two way communications path.Type: GrantFiled: May 12, 2006Date of Patent: December 7, 2010Assignee: Broadcom CorporationInventors: Klaas Bult, Rudy van de Plassche, Pieter Vorenkamp, Arnoldus Venes
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Publication number: 20080101592Abstract: A line driver comprises a driving amplifier receiving an input of the line driver, a current sense resistor connected between the driving amplifier output and the line driver output, and a feedback amplifier sensing the voltage across the current sense resistor and providing a corresponding feedback voltage that is proportional to the output current to the driving amplifier, thereby determining an output impedance at the line driver output. Precise output impedance can be realized by using a high precision resistor as the current sense resistor, and using resistive feedback amplifiers with accurate gains as the driving and feedback amplifiers. The resistance of the current sense resistor can be substantially less than the line driver output impedance, and the driving amplifier output voltage swing can be substantially less than twice the line driver output voltage swing.Type: ApplicationFiled: October 30, 2006Publication date: May 1, 2008Inventors: Jiangfeng Wu, Tianwei Li, Arnoldus Venes
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Publication number: 20070105504Abstract: An integrated communications system. A substrate having a receiver disposed on the substrate for converting a received signal to an IF signal, a digital IF demodulator disposed on the substrate and coupled to the receiver for converting the IF signal to a demodulated baseband signal, and a transmitter disposed on the substrate operating in cooperation with the receiver to establish a two way communications path.Type: ApplicationFiled: September 7, 2006Publication date: May 10, 2007Applicant: Broadcom CorporationInventors: Pieter Vorenkamp, Myles Wakayama, Steven Jaffe, Frank Carr, Arnoldus Venes, Peter Kinget, Daniel Marz, Thinh Nguyen
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Patent number: 7129871Abstract: A wide gain range current digital-to-analog converter (DAC) is presented that includes a unit current cell having a current source module biased by a current source voltage bias, a differential switch module, a main cascode module biased by a first bias voltage and an attenuation cascode module biased by a second bias voltage, configured such that a particular current gain range is obtained at the main cascode module output when a unit current cell current is at or above a current threshold. The output current at the attenuation cascode module output can be input into a current attenuator when the unit current cell current is below the current threshold to obtain additional current gain range. The current attenuator can include a plurality of attenuator cells that can be programmed to a desired level of current gain in linear decibels or linear step intervals. Smaller step sizes can be obtained by programming a current source within the step intervals.Type: GrantFiled: August 31, 2005Date of Patent: October 31, 2006Assignee: Broadcom CorporationInventors: Arnoldus Venes, Yonghua Cong
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Publication number: 20060229046Abstract: An integrated communications system. Comprising a substrate having a receiver disposed on the substrate for converting a received signal to an IF signal. Coupled to a VGA for low voltage applications and coupled to the receiver for processing the IF signal. The VGA includes a bank pair having a first bank of differential pairs of transistors and a second bank of differential pairs of transistors. The bank pair is cross-coupled in parallel, the IF signal is applied to the bank pair decoupled from a control signal used to control transconductance output gain of the bank pair over a range of input voltages. A digital IF demodulator is disposed on the substrate and coupled to the VGA for low voltage applications, for converting the IF signal to a demodulated baseband signal. And a transmitter is disposed on the substrate operating in cooperation with the receiver to establish a two way communications path.Type: ApplicationFiled: May 12, 2006Publication date: October 12, 2006Applicant: Broadcom CorporationInventors: Klaas Bult, Rudy Plassche, Arnoldus Venes
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Patent number: 7106388Abstract: An integrated communications system. A substrate having a receiver disposed on the substrate for converting a received signal to an IF signal, a digital IF demodulator disposed on the substrate and coupled to the receiver for converting the IF signal to a demodulated baseband signal, and a transmitter disposed on the substrate operating in cooperation with the receiver to establish a two way communications path.Type: GrantFiled: December 15, 2000Date of Patent: September 12, 2006Assignee: Broadcom CorporationInventors: Pieter Vorenkamp, Myles H. Wakayama, Steven Jaffe, Frank Carr, Arnoldus Venes, Peter R. Kinget, Daniel J. Marz, Thinh Nguyen
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Patent number: 7076226Abstract: An integrated communications system. Comprising a substrate having a receiver disposed on the substrate for converting a received signal to an IF signal. Coupled to a VGA for low voltage applications and coupled to the receiver for processing the IF signal. The VGA includes a bank pair having a first bank of differential pairs of transistors and a second bank of differential pairs of transistors. The bank pair is cross-coupled in parallel, the IF signal is applied to the bank pair decoupled from a control signal used to control transconductance output gain of the bank pair over a range of input voltages. A digital IF demodulator is disposed on the substrate and coupled to the VGA for low voltage applications, for converting the IF signal to a demodulated baseband signal. And a transmitter is disposed on the substrate operating in cooperation with the receiver to establish a two way communications path.Type: GrantFiled: December 30, 2003Date of Patent: July 11, 2006Assignee: Broadcom CorporationInventors: Klaas Bult, Rudy van de Plassche, Pieter Vorenkamp, Arnoldus Venes
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Publication number: 20060098823Abstract: Provided is a transmitter in a communications system including a plurality of digital to analog converters. Also included is a plurality of clocks, each being communicably coupled to a corresponding one of the digital to analog converters.Type: ApplicationFiled: October 28, 2004Publication date: May 11, 2006Inventors: Arnoldus Venes, Kevin Miller, Pieter Vorenkamp
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Patent number: 6972625Abstract: Continuously tuning a transconductance. Coupling a degeneration resistance from a first source of a first transistor in a differential pair of transistors to a second source of a second transistor in the differential pair of transistors. Applying a second variable degeneration resistance in parallel to the first degeneration resistance in response to the application of a first variable control voltage. And applying a third variable degeneration resistance in parallel to the first degeneration resistance and the second degeneration resistance in response to the application of a second variable control voltage having a fixed voltage offset from the first variable control voltage.Type: GrantFiled: April 14, 2004Date of Patent: December 6, 2005Assignee: Broadcom CorporationInventors: Thinh Cat Nguyen, Arnoldus Venes
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Publication number: 20050123029Abstract: Provided are a method and system for a module for a cable modem termination system. The module includes a digital modulator configured to block up-convert a plurality of digital channels and a digital to analog converter coupled, at least indirectly, to an output of the digital modulator to convert the digital channels to an analog format.Type: ApplicationFiled: October 28, 2004Publication date: June 9, 2005Inventors: Pieter Vorenkamp, Arnoldus Venes, Kevin Miller, Chung-Ying Chen
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Publication number: 20040219898Abstract: An integrated communications system. Comprising a substrate having a receiver disposed on the substrate for converting a received signal to an IF signal. Coupled to a VGA for low voltage applications and coupled to the receiver for processing the IF signal. The VGA includes a bank pair having a first bank of differential pairs of transistors and a second bank of differential pairs of transistors. The bank pair is cross-coupled in parallel, the IF signal is applied to the bank pair decoupled from a control signal used to control transconductance output gain of the bank pair over a range of input voltages. A digital IF demodulator is disposed on the substrate and coupled to the VGA for low voltage applications, for converting the IF signal to a demodulated baseband signal. And a transmitter is disposed on the substrate operating in cooperation with the receiver to establish a two way communications path.Type: ApplicationFiled: December 30, 2003Publication date: November 4, 2004Applicant: Broadcom CorporationInventors: Klaas Bult, Rudy Van De Plassche, Pieter Vorenkamp, Arnoldus Venes
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Publication number: 20040189388Abstract: Continuously tuning a transconductance. Coupling a degeneration resistance from a first source of a first transistor in a differential pair of transistors to a second source of a second transistor in the differential pair of transistors. Applying a second variable degeneration resistance in parallel to the first degeneration resistance in response to the application of a first variable control voltage. And applying a third variable degeneration resistance in parallel to the first degeneration resistance and the second degeneration resistance in response to the application of a second variable control voltage having a fixed voltage offset from the first variable control voltage.Type: ApplicationFiled: April 14, 2004Publication date: September 30, 2004Applicant: Broadcom CorporationInventors: Thinh Cat Nguyen, Arnoldus Venes
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Patent number: 6744320Abstract: Continuously tuning a transconductance. Coupling a degeneration resistance from a first source of a first transistor in a differential pair of transistors to a second source of a second transistor in the differential pair of transistors. Applying a second variable degeneration resistance in parallel to the first degeneration resistance in response to the application of a first variable control voltage. And applying a third variable degeneration resistance in parallel to the first degeneration resistance and the second degeneration resistance in response to the application of a second variable control voltage having a fixed voltage offset from the first variable control voltage.Type: GrantFiled: December 2, 2002Date of Patent: June 1, 2004Assignee: Broadcom CorporationInventors: Thinh Cat Nguyen, Arnoldus Venes
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Patent number: 6684065Abstract: An integrated communications system. Comprising a substrate having a receiver disposed on the substrate for converting a received signal to an IF signal. Coupled to a VGA for low voltage applications and coupled to the receiver for processing the IF signal. The VGA includes a bank pair having a first bank of differential pairs of transistors and a second bank of differential pairs of transistors. The bank pair is cross-coupled in parallel, the IF signal is applied to the bank pair decoupled from a control signal used to control transconductance output gain of the bank pair over a range of input voltages. A digital IF demodulator is disposed on the substrate and coupled to the VGA for low voltage applications, for converting the IF signal to a demodulated baseband signal. And a transmitter is disposed on the substrate operating in cooperation with the receiver to establish a two way communications path.Type: GrantFiled: December 20, 2000Date of Patent: January 27, 2004Assignee: Broadcom CorporationInventors: Klaas Bult, Rudy van de Plassche, Pieter Vorenkamp, Arnoldus Venes