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11. 发明授权

US07106388B2 Digital IF demodulator for video applications 失效
公开(公告)号：US07106388B2
公开(公告)日：2006-09-12
申请号：US09739349
申请日：2000-12-15
申请人： Pieter Vorenkamp , Myles H. Wakayama , Steven Jaffe , Frank Carr , Arnoldus Venes , Peter R. Kinget , Daniel J. Marz , Thinh Nguyen
发明人： Pieter Vorenkamp , Myles H. Wakayama , Steven Jaffe , Frank Carr , Arnoldus Venes , Peter R. Kinget , Daniel J. Marz , Thinh Nguyen
IPC分类号： H04N5/455
CPC分类号： H04N5/455 , H03D7/16 , H03J3/18 , H04N5/44
摘要： 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.

12. 发明授权

US06744320B2 Variable transconductane variable gain amplifier utilizing a degenerated differential pair 有权
标题翻译：使用退化差分对的可变跨导可变增益放大器
公开(公告)号：US06744320B2
公开(公告)日：2004-06-01
申请号：US10307293
申请日：2002-12-02
申请人： Thinh Cat Nguyen , Arnoldus Venes
发明人： Thinh Cat Nguyen , Arnoldus Venes
IPC分类号： H03F345
CPC分类号： H03F3/45197 , H03F1/3211 , H03F2200/294 , H03F2200/331 , H03F2200/372 , H03G1/0029
摘要： 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.
摘要翻译：不断调整跨导。将差分对晶体管中的第一晶体管的第一源极的退化电阻耦合到差分晶体管对中的第二晶体管的第二源极。响应于施加第一可变控制电压，施加与第一退化电阻并联的第二变量退化电阻。以及响应于施加了具有从所述第一可变控制电压偏移的固定电压的第二可变控制电压，施加与所述第一退化电阻和所述第二退化电阻并联的第三变量退化电阻。

13. 发明授权

US06509796B2 Variable transconductance variable gain amplifier utilizing a degenerated differential pair 有权
公开(公告)号：US06509796B2
公开(公告)日：2003-01-21
申请号：US09780065
申请日：2001-02-08
申请人： Thinh Cat Nguyen , Arnoldus Venes
发明人： Thinh Cat Nguyen , Arnoldus Venes
IPC分类号： H03F345
CPC分类号： H03F3/45197 , H03F1/3211 , H03F2200/294 , H03F2200/331 , H03F2200/372 , H03G1/0029
摘要： 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.

14. 发明授权

US08489052B2 Variable gain amplifier for low voltage applications 有权
公开(公告)号：US08489052B2
公开(公告)日：2013-07-16
申请号：US12961151
申请日：2010-12-06
申请人： Klaas Bult , Rudy van de Plassche , Pieter Vorenkamp , Arnoldus Venes
发明人： Klaas Bult , Rudy van de Plassche , Pieter Vorenkamp , Arnoldus Venes
IPC分类号： H04B1/06 , H03F3/45
CPC分类号： H03G3/30 , H03F1/34 , H03F3/195 , H03F3/24 , H03F3/45188 , H03F3/45192 , H03F2200/294 , H03F2200/331 , H03F2200/372 , H03F2200/513 , H03F2203/45644 , H03G1/0029 , H04B2001/0433
摘要： 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.

15. 发明授权

US08009824B2 Line driver with active termination 有权
标题翻译：线路驱动器，主动终端
公开(公告)号：US08009824B2
公开(公告)日：2011-08-30
申请号：US11590202
申请日：2006-10-30
申请人： Jiangfeng Wu , Tianwei Li , Arnoldus Venes
发明人： Jiangfeng Wu , Tianwei Li , Arnoldus Venes
IPC分类号： H04M1/00
CPC分类号： H04M11/062 , H04L25/028 , H04L25/0298
摘要： 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.
摘要翻译：线路驱动器包括接收线路驱动器的输入的驱动放大器，连接在驱动放大器输出和线路驱动器输出之间的电流检测电阻器，以及感测电流检测电阻器两端的电压的反馈放大器，并提供相应的反馈电压，与驱动放大器的输出电流成比例，从而确定线路驱动器输出端的输出阻抗。可以通过使用高精度电阻器作为电流检测电阻器，并使用具有精确增益的电阻反馈放大器作为驱动和反馈放大器来实现精确的输出阻抗。电流检测电阻器的电阻可以显着小于线路驱动器输出阻抗，并且驱动放大器输出电压摆幅可以显着小于线路驱动器输出电压摆幅的两倍。

16. 发明授权

US07076226B2 Variable gain amplifier for low voltage applications 有权
公开(公告)号：US07076226B2
公开(公告)日：2006-07-11
申请号：US10747124
申请日：2003-12-30
申请人： Klaas Bult , Rudy van de Plassche , Pieter Vorenkamp , Arnoldus Venes
发明人： Klaas Bult , Rudy van de Plassche , Pieter Vorenkamp , Arnoldus Venes
IPC分类号： H04B1/06 , H03F3/45
CPC分类号： H03G3/30 , H03F1/34 , H03F3/195 , H03F3/24 , H03F3/45188 , H03F3/45192 , H03F2200/294 , H03F2200/331 , H03F2200/372 , H03F2200/513 , H03F2203/45644 , H03G1/0029 , H04B2001/0433
摘要： 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.

17. 发明申请

US20050123029A1 Method and system for direct digital up-conversion in a cable modem 有权
标题翻译：电缆调制解调器中直接数字上转换的方法和系统
公开(公告)号：US20050123029A1
公开(公告)日：2005-06-09
申请号：US10975104
申请日：2004-10-28
申请人： Pieter Vorenkamp , Arnoldus Venes , Kevin Miller , Chung-Ying Chen
发明人： Pieter Vorenkamp , Arnoldus Venes , Kevin Miller , Chung-Ying Chen
IPC分类号： H04B1/38 , H04H1/00 , H04H20/79 , H04L5/06
CPC分类号： H04H20/79 , H04L5/06
摘要： 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.
摘要翻译：提供一种用于电缆调制解调器终端系统的模块的方法和系统。该模块包括数字调制器，被配置为阻止多个数字信道的上变换和至少间接耦合到数字调制器的输出的数模转换器，以将数字信道转换为模拟格式。

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