公开(公告)号：US07177610B2

公开(公告)日：2007-02-13

申请号：US10081121

申请日：2002-02-22

申请人： Jeffrey W. Scott ,  G. Diwakar Vishakhadatta ,  Donald A. Kerth ,  Richard T. Behrens ,  G. Tyson Tuttle ,  Vishnu S. Srinivasan

发明人： Jeffrey W. Scott ,  G. Diwakar Vishakhadatta ,  Donald A. Kerth ,  Richard T. Behrens ,  G. Tyson Tuttle ,  Vishnu S. Srinivasan

IPC分类号： H04B1/06 ,  H04B7/00

CPC分类号： H04B1/0003 ,  H04B1/28 ,  H04B1/406 ,  H04B15/02 ,  H04B15/04 ,  H04B2215/064

摘要： A low-noise current reference circuitry includes a voltage source, a current source, and a controller. The voltage source generates a reference voltage. The current source provides a low-noise output current in response to a control signal. The controller provides the control signal based at least in part on the relative magnitudes of the reference voltage and a voltage derived from the output current. A low-noise voltage reference circuitry includes a reference voltage source, a voltage source, and a controller. The reference voltage source generates a reference voltage. The voltage source provides a low-noise output voltage in response to a control signal. The controller provides the control signal based at least in part on the relative magnitudes of the output voltage and the reference voltage.

摘要翻译： 低噪声电流参考电路包括电压源，电流源和控制器。 电压源产生参考电压。 电流源提供响应于控制信号的低噪声输出电流。 控制器至少部分地基于参考电压的相对幅度和从输出电流导出的电压来提供控制信号。 低噪声电压参考电路包括参考电压源，电压源和控制器。 参考电压源产生参考电压。 电压源响应于控制信号提供低噪声输出电压。 控制器至少部分地基于输出电压和参考电压的相对幅度提供控制信号。

公开(公告)号：US07138858B2

公开(公告)日：2006-11-21

申请号：US10079058

申请日：2002-02-19

申请人： Augusto M. Marques ,  Donald A. Kerth ,  Richard T. Behrens ,  Jeffrey W. Scott ,  G. Diwakar Vishakhadatta ,  G. Tyson Tuttle ,  Vishnu S. Srinivasan

发明人： Augusto M. Marques ,  Donald A. Kerth ,  Richard T. Behrens ,  Jeffrey W. Scott ,  G. Diwakar Vishakhadatta ,  G. Tyson Tuttle ,  Vishnu S. Srinivasan

IPC分类号： G01R19/00 ,  H03F3/38

CPC分类号： H04B1/0003 ,  H04B1/28 ,  H04B1/406 ,  H04B15/02 ,  H04B15/04 ,  H04B2215/064

摘要： A buffer circuitry buffers a radio-frequency (RF) signal. The buffer circuitry includes a complementary pair of switches and a power source. The a complementary pair of switches has an input terminal and output terminal. The input terminal of the complementary pair of switches responds to the RF signal. The output terminal of the complementary pair of switches couples to an output of the buffer circuitry. The power source includes a capacitor coupled to a current source. The power source couples to the complementary pair of switches. The power source supplies power to the complementary pair of switches in a manner that the buffer circuitry supplies a substantially constant power level at its output.

公开(公告)号：US07092675B2

公开(公告)日：2006-08-15

申请号：US10075098

申请日：2002-02-13

申请人： Lysander Lim ,  Caiyi Wang ,  David R. Welland ,  Donald A. Kerth ,  Richard T. Behrens ,  Jeffrey W. Scott ,  G. Diwakar Vishakhadatta ,  G. Tyson Tuttle ,  Vishnu S. Srinivasan

发明人： Lysander Lim ,  Caiyi Wang ,  David R. Welland ,  Donald A. Kerth ,  Richard T. Behrens ,  Jeffrey W. Scott ,  G. Diwakar Vishakhadatta ,  G. Tyson Tuttle ,  Vishnu S. Srinivasan

IPC分类号： H04B1/40

CPC分类号： H03L7/085 ,  H03L7/087 ,  H03L7/091 ,  H03L7/099 ,  H03L7/187 ,  H03L7/199 ,  H03L7/23 ,  H04B1/0003 ,  H04B1/28 ,  H04B1/406 ,  H04B15/02 ,  H04B15/04 ,  H04B2215/064

摘要： A radio-frequency (RF) apparatus capable of transmitting RF signals includes transmitter path circuitry. The transmitter path circuitry includes a voltage-controlled oscillator (VCO) that generates an output signal. The frequency of the output signal of the VCO circuitry is adjustable in response to a first control signal and a second control signal. The transmitter path circuitry also includes a first feedback circuitry and a second feedback circuitry that are responsive to the output signal of the VCO circuitry. The first feedback circuitry provides the first control signal to the VCO circuitry. The first control signal coarsely adjusts the frequency of the output signal of the VCO circuitry to a desired frequency. The second feedback circuitry supplies the second control signal to the VCO circuitry. The second control signal fine tunes the frequency of the output signal of the voltage-controlled oscillator circuitry to the desired frequency.

摘要翻译： 能够发送RF信号的射频（RF）装置包括发射机路径电路。 发射机路径电路包括产生输出信号的压控振荡器（VCO）。 VCO电路的输出信号的频率可响应于第一控制信号和第二控制信号而调节。 发射机路径电路还包括响应于VCO电路的输出信号的第一反馈电路和第二反馈电路。 第一反馈电路向VCO电路提供第一控制信号。 第一控制信号粗略地将VCO电路的输出信号的频率调整到期望的频率。 第二反馈电路将第二控制信号提供给VCO电路。 第二控制信号将压控振荡器电路的输出信号的频率调谐到期望的频率。

公开(公告)号：US07035611B2

公开(公告)日：2006-04-25

申请号：US10079057

申请日：2002-02-19

申请人： Eric R. Garlepp ,  Donald A. Kerth ,  Richard T. Behrens ,  Jeffrey W. Scott ,  G. Diwakar Vishakhadatta ,  G. Tyson Tuttle ,  Vishnu S. Srinivasan

发明人： Eric R. Garlepp ,  Donald A. Kerth ,  Richard T. Behrens ,  Jeffrey W. Scott ,  G. Diwakar Vishakhadatta ,  G. Tyson Tuttle ,  Vishnu S. Srinivasan

IPC分类号： H04B1/06

CPC分类号： H04B1/0003 ,  H04B1/28 ,  H04B1/406 ,  H04B15/02 ,  H04B15/04 ,  H04B2215/064

摘要： A radio-frequency (RF) apparatus includes front-end circuitry. The front-end circuitry includes a filter circuitry and an impedance matching circuitry. The filter circuitry has a differential output that has an output impedance. The filter circuitry filters signals outside a signal band of interest. The impedance matching network has a differential input coupled to the output of the filter circuitry. The impedance matching network also has a differential output coupled to a signal processing circuitry. The signal processing circuitry has an input impedance. The impedance matching network matches the input impedance of the signal processing circuitry to the output impedance of the filter circuitry.

公开(公告)号：US07031683B2

公开(公告)日：2006-04-18

申请号：US10083633

申请日：2002-02-26

申请人： G. Diwakar Vishakhadatta ,  Donald A. Kerth ,  Russell Croman ,  Jeffrey W. Scott ,  Richard T. Behrens ,  G. Tyson Tuttle ,  Vishnu S. Srinivasan

发明人： G. Diwakar Vishakhadatta ,  Donald A. Kerth ,  Russell Croman ,  Jeffrey W. Scott ,  Richard T. Behrens ,  G. Tyson Tuttle ,  Vishnu S. Srinivasan

IPC分类号： H04B1/26

CPC分类号： H04B1/0003 ,  H04B1/28 ,  H04B1/406 ,  H04B15/02 ,  H04B15/04 ,  H04B2215/064

摘要： A calibration circuitry includes an adjustable capacitor, a voltage generator, a reference voltage generator, and a controller. The reference voltage generator provides a reference voltage. The voltage generator provides a measurement voltage that depends on the capacitance of the adjustable capacitor. The capacitance of the adjustable capacitor varies in response to a control signal. The controller provides the control signal based on the relative values of the reference voltage and the measurement voltage.

公开(公告)号：US07941102B2

公开(公告)日：2011-05-10

申请号：US11931656

申请日：2007-10-31

申请人： Donald A. Kerth ,  Richard T. Behrens ,  Jeffrey W. Scott ,  G. Diwakar Vishakhadatta ,  G. Tyson Tuttle ,  Vishnu Shankar Srinivasan

发明人： Donald A. Kerth ,  Richard T. Behrens ,  Jeffrey W. Scott ,  G. Diwakar Vishakhadatta ,  G. Tyson Tuttle ,  Vishnu Shankar Srinivasan

IPC分类号： H04B1/40

CPC分类号： H04B1/109 ,  H04B1/0003 ,  H04B1/28 ,  H04B1/406 ,  H04B15/02 ,  H04B15/04 ,  H04B2215/064 ,  H04L27/2649

摘要： Radio-frequency (RF) apparatus includes receiver analog circuitry that receives an RF signal and provides at least one digital signal to receiver digital circuitry that functions in cooperation with the receiver analog circuitry. The receiver analog circuitry and the receiver digital circuitry are partitioned so that interference effects between the receiver analog circuitry and the receiver digital circuitry tend to be reduced.

摘要翻译： 射频（RF）设备包括接收模拟电路，其接收RF信号并且向与接收机模拟电路协作起作用的接收机数字电路提供至少一个数字信号。 接收机模拟电路和接收机数字电路被分割，使得接收机模拟电路和接收机数字电路之间的干扰效应趋于降低。

公开(公告)号：US20110230158A1

公开(公告)日：2011-09-22

申请号：US13104822

申请日：2011-05-10

申请人： Donald A. Kerth ,  Richard T. Behrens ,  Jeffrey W. Scott ,  G. Diwakar Vishakhadatta ,  G. Tyson Tuttle ,  Vishnu Shankar Srinivasan

发明人： Donald A. Kerth ,  Richard T. Behrens ,  Jeffrey W. Scott ,  G. Diwakar Vishakhadatta ,  G. Tyson Tuttle ,  Vishnu Shankar Srinivasan

IPC分类号： H04B1/16

CPC分类号： H04B1/109 ,  H04B1/0003 ,  H04B1/28 ,  H04B1/406 ,  H04B15/02 ,  H04B15/04 ,  H04B2215/064 ,  H04L27/2649

摘要： Radio-frequency (RF) apparatus includes receiver analog circuitry that receives an RF signal and provides at least one digital signal to receiver digital circuitry that functions in cooperation with the receiver analog circuitry. The receiver analog circuitry and the receiver digital circuitry are partitioned so that interference effects between the receiver analog circuitry and the receiver digital circuitry tend to be reduced.

公开(公告)号：US08422964B2

公开(公告)日：2013-04-16

申请号：US13104822

申请日：2011-05-10

申请人： Donald A. Kerth ,  Richard T. Behrens ,  Jeffrey W. Scott ,  G. Diwakar Vishakhadatta ,  G. Tyson Tuttle ,  Vishnu Shankar Srinivasan

发明人： Donald A. Kerth ,  Richard T. Behrens ,  Jeffrey W. Scott ,  G. Diwakar Vishakhadatta ,  G. Tyson Tuttle ,  Vishnu Shankar Srinivasan

IPC分类号： H04B1/40

CPC分类号： H04B1/109 ,  H04B1/0003 ,  H04B1/28 ,  H04B1/406 ,  H04B15/02 ,  H04B15/04 ,  H04B2215/064 ,  H04L27/2649

摘要： Radio-frequency (RF) apparatus includes receiver analog circuitry that receives an RF signal and provides at least one digital signal to receiver digital circuitry that functions in cooperation with the receiver analog circuitry. The receiver analog circuitry and the receiver digital circuitry are partitioned so that interference effects between the receiver analog circuitry and the receiver digital circuitry tend to be reduced.

公开(公告)号：US20080139157A1

公开(公告)日：2008-06-12

申请号：US11931656

申请日：2007-10-31

申请人： Donald A. Kerth ,  Richard T. Behrens ,  Jeffrey W. Scott ,  G. Diwakar Vishakhadatta ,  G. Tyson Tuttle ,  Vishnu Shankar Srinivasan

发明人： Donald A. Kerth ,  Richard T. Behrens ,  Jeffrey W. Scott ,  G. Diwakar Vishakhadatta ,  G. Tyson Tuttle ,  Vishnu Shankar Srinivasan

IPC分类号： H04B1/18

CPC分类号： H04B1/109 ,  H04B1/0003 ,  H04B1/28 ,  H04B1/406 ,  H04B15/02 ,  H04B15/04 ,  H04B2215/064 ,  H04L27/2649

摘要： Radio-frequency (RF) apparatus includes receiver analog circuitry that receives an RF signal and provides at least one digital signal to receiver digital circuitry that functions in cooperation with the receiver analog circuitry. The receiver analog circuitry and the receiver digital circuitry are partitioned so that interference effects between the receiver analog circuitry and the receiver digital circuitry tend to be reduced.

摘要翻译： 射频（RF）设备包括接收模拟电路，其接收RF信号并且向与接收机模拟电路协作起作用的接收机数字电路提供至少一个数字信号。 接收机模拟电路和接收机数字电路被分割，使得接收机模拟电路和接收机数字电路之间的干扰效应趋向于减小。

公开(公告)号：US07366478B2

公开(公告)日：2008-04-29

申请号：US10878880

申请日：2004-06-28

申请人： Donald A. Kerth ,  Richard T. Behrens ,  Jeffrey W. Scott ,  G. Diwakar Vishakhadatta ,  G. Tyson Tuttle ,  Vishnu Shankar Srinivasan

发明人： Donald A. Kerth ,  Richard T. Behrens ,  Jeffrey W. Scott ,  G. Diwakar Vishakhadatta ,  G. Tyson Tuttle ,  Vishnu Shankar Srinivasan

IPC分类号： H04B1/40

CPC分类号： H04B1/109 ,  H04B1/0003 ,  H04B1/28 ,  H04B1/406 ,  H04B15/02 ,  H04B15/04 ,  H04B2215/064 ,  H04L27/2649

摘要： Radio-frequency (RF) apparatus includes receiver analog circuitry that receives an RF signal and provides at least one digital signal to receiver digital circuitry that functions in cooperation with the receiver analog circuitry. The receiver analog circuitry and the receiver digital circuitry are partitioned so that interference effects between the receiver analog circuitry and the receiver digital circuitry tend to be reduced.