公开(公告)号：US07242912B2

公开(公告)日：2007-07-10

申请号：US10631166

申请日：2003-07-31

申请人： James Maligeorgos ,  Augusto M. Marques ,  Lysander Lim ,  G. Tyson Tuttle ,  Aslamali A. Rafi ,  Tod Paulus ,  Gregory T. Uehara ,  Jeffrey W. Scott ,  Richard T. Behrens ,  Donald A. Kerth ,  G. Diwakar Vishakhadatta ,  Vishnu S. Srinivasan ,  Caiyi Wang

发明人： James Maligeorgos ,  Augusto M. Marques ,  Lysander Lim ,  G. Tyson Tuttle ,  Aslamali A. Rafi ,  Tod Paulus ,  Gregory T. Uehara ,  Jeffrey W. Scott ,  Richard T. Behrens ,  Donald A. Kerth ,  G. Diwakar Vishakhadatta ,  Vishnu S. Srinivasan ,  Caiyi Wang

IPC分类号： H04B1/40

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

摘要： Components of a radio-frequency (RF) apparatus including transceiver circuitry and frequency modification circuitry of a crystal oscillator circuit that generates a reference signal with adjustable frequency may be partitioned in a variety of ways, for example, as one or more separate integrated circuits. The frequency modification circuitry may be implemented as part of a crystal oscillator circuit that includes digitally controlled crystal oscillator (“DCXO”) circuitry and a crystal. The frequency modification circuitry may include at least one variable capacitance device and may be employed to generate a reference signal with adjustable frequency. The adjustable reference signal may be provided to other components of the RF apparatus and/or the RF apparatus may be configured to provide the adjustable reference signal to baseband processor circuitry. Automatic frequency control (AFC) circuitry may be integrated with other components of RF circuitry and may generate frequency control signals for the frequency modification circuitry based on, for example, a signal received from a temperature sensor. Digital-to-analog converter (DAC) circuitry may be integrated with other components of RF circuitry to enable all-digital frequency control communications from baseband processor circuitry to RF circuitry.

摘要翻译： 包括生成具有可变频率的参考信号的晶体振荡器电路的收发器电路和频率修改电路的射频（RF）设备的组件可以以各种方式被划分，例如作为一个或多个单独的集成电路。 频率修改电路可以被实现为包括数字控制的晶体振荡器（“DCXO”）电路和晶体的晶体振荡器电路的一部分。 频率修改电路可以包括至少一个可变电容器件，并且可以用于产生具有可调频率的参考信号。 可调参考信号可以被提供给RF装置的其他部件，和/或RF装置可以被配置为向基带处理器电路提供可调参考信号。 自动频率控制（AFC）电路可以与RF电路的其它组件集成，并且可以基于例如从温度传感器接收的信号来生成用于频率修改电路的频率控制信号。 数模转换器（DAC）电路可以与RF电路的其他部件集成，以实现从基带处理器电路到RF电路的全数字频率控制通信。

公开(公告)号：US07221921B2

公开(公告)日：2007-05-22

申请号：US10730404

申请日：2003-12-08

申请人： James Maligeorgos ,  Augusto M. Marques ,  Lysander Lim ,  G. Tyson Tuttle ,  Aslamali A. Rafi ,  Tod Paulus ,  Gregory T. Uehara ,  Jeffrey W. Scott ,  Richard T. Behrens ,  Donald A. Kerth ,  G. Diwakar Vishakhadatta ,  Vishnu S. Srinivasan ,  Caiyi Wang

发明人： James Maligeorgos ,  Augusto M. Marques ,  Lysander Lim ,  G. Tyson Tuttle ,  Aslamali A. Rafi ,  Tod Paulus ,  Gregory T. Uehara ,  Jeffrey W. Scott ,  Richard T. Behrens ,  Donald A. Kerth ,  G. Diwakar Vishakhadatta ,  Vishnu S. Srinivasan ,  Caiyi Wang

IPC分类号： H04B7/00 ,  H04B1/40 ,  H03J7/04

CPC分类号： H04B1/30 ,  H03J2200/10 ,  H04L27/0002

摘要： Components of a radio-frequency (RF) apparatus including transceiver circuitry and frequency modification circuitry of a crystal oscillator circuit that generates a reference signal with adjustable frequency may be partitioned in a variety of ways, for example, as one or more separate integrated circuits. The frequency modification circuitry may be implemented as part of a crystal oscillator circuit that includes digitally controlled crystal oscillator (“DCXO”) circuitry and a crystal. The frequency modification circuitry may include at least one variable capacitance device and may be employed to generate a reference signal with adjustable frequency. The adjustable reference signal may be provided to other components of the RF apparatus and/or the RF apparatus may be configured to provide the adjustable reference signal to baseband processor circuitry. Automatic frequency control (AFC) circuitry may be integrated with other components of RF circuitry and may generate frequency control signals for the frequency modification circuitry based on, for example, a signal received from a temperature sensor. Digital-to-analog converter (DAC) circuitry may be integrated with other components of RF circuitry to enable all-digital frequency control communications from baseband processor circuitry to RF circuitry.

公开(公告)号：US06993314B2

公开(公告)日：2006-01-31

申请号：US10074591

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： H04N1/28

CPC分类号： H04B1/0003 ,  H03L7/085 ,  H03L7/087 ,  H03L7/091 ,  H03L7/099 ,  H03L7/187 ,  H03L7/199 ,  H03L7/23 ,  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) circuitry. The VCO circuitry generates a first signal that has a first frequency. A divider circuitry couples to the VCO circuitry and, in response to the first signal, the divider circuitry generates a second signal that has a second frequency. The frequency of the second signal equals the frequency of the first signal divided by a number.

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：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：US07228109B2

公开(公告)日：2007-06-05

申请号：US10074676

申请日：2002-02-12

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

发明人： Tod Paulus ,  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： H04L25/061 ,  H04B1/0003 ,  H04B1/28 ,  H04B1/406 ,  H04B15/02 ,  H04B15/04 ,  H04B2215/064

摘要： A radio-frequency receiver circuitry includes a down-converter circuitry, an analog-to-digital converter circuitry, and a DC offset reduction circuitry. The down-converter circuitry accepts a received radio-frequency signal and processes the radio-frequency signal to provide an in-phase down-converted signal and a quadrature down-converted signal to the analog-to-digital converter circuitry. The analog-to-digital converter circuitry converts the in-phase and quadrature down-converted signals to an in-phase digital output signal and a quadrature digital output signal, respectively. The DC offset reduction circuitry couples to the analog-to-digital converter circuitry, and tends to reduce a DC offset transmitted to the in-phase and quadrature digital output signals.

摘要翻译： 射频接收器电路包括下变频器电路，模数转换器电路和DC偏移减小电路。 下变换器电路接收接收的射频信号并处理射频信号以向模数转换器电路提供同相下变频信号和正交下变频信号。 模数转换器电路将同相和正交下变频信号分别转换为同相数字输出信号和正交数字输出信号。 DC偏移降低电路耦合到模数转换器电路，并且倾向于减少传输到同相和正交数字输出信号的DC偏移。

公开(公告)号：US07024221B2

公开(公告)日：2006-04-04

申请号：US10075099

申请日：2002-02-12

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

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

IPC分类号： H04B1/38 ,  H04M1/00

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

摘要： A radio-frequency (RF) receiver includes a receiver analog circuitry and a receiver digital circuitry coupled together. The receiver analog circuitry receives an RF signal. The receiver analog circuitry processes the received RF signal and generates a digital signal that it provides to the receiver digital circuitry. The receiver digital circuitry includes a digital down-converter circuitry that mixes the digital signal provided by a receiver analog circuitry with a digital intermediate frequency (IF) local oscillator signal to generate a digital down-converted signal. The receiver digital circuitry also includes a digital filter circuitry that filters the digital down-converted signal to generate a filtered digital signal. The digital filter circuitry provides a notch at a frequency that corresponds to a residual DC offset of the receiver analog circuitry.

公开(公告)号：US20100166124A1

公开(公告)日：2010-07-01

申请号：US12715361

申请日：2010-03-01

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

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

IPC分类号： H04L27/00 ,  H04B1/10

CPC分类号： H04B1/28 ,  H04B1/0003 ,  H04B1/38 ,  H04B1/406 ,  H04B15/02 ,  H04B15/04 ,  H04B2215/064

摘要： A radio-frequency (RF) receiver includes a receiver analog circuitry and a receiver digital circuitry. The receiver analog circuitry resides within a first integrated circuit and the receiver digital circuitry resides within a second integrated circuit. The second integrated circuit couples to the first integrated circuit via a one-bit digital interface. The receiver analog circuitry receives an RF signal and processes the received RF signal to generate a digital signal. The receiver analog circuitry provides the digital signal to the receiver digital circuitry. The receiver digital circuitry includes a digital down-converter circuitry that mixes the digital signal with an intermediate frequency (IF) local oscillator (LO) signal to generate a digital down-converted signal. The receiver digital circuitry also includes a digital filter circuitry that filters the digital down-converted signal to generate a filtered digital signal.

摘要翻译： 射频（RF）接收机包括接收机模拟电路和接收机数字电路。 接收器模拟电路驻留在第一集成电路内，并且接收器数字电路位于第二集成电路内。 第二集成电路通过一位数字接口耦合到第一集成电路。 接收机模拟电路接收RF信号并处理所接收的RF信号以产生数字信号。 接收机模拟电路将数字信号提供给接收机数字电路。 接收机数字电路包括数字下变频器电路，其将数字信号与中频（IF）本地振荡器（LO）信号混合以产生数字下变频信号。 接收机数字电路还包括数字滤波器电路，其对数字下变频信号进行滤波以产生经滤波的数字信号。

公开(公告)号：US07702362B2

公开(公告)日：2010-04-20

申请号：US11287995

申请日：2005-11-28

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

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

IPC分类号： H04B1/38 ,  H04M1/00

CPC分类号： H04B1/28 ,  H04B1/0003 ,  H04B1/38 ,  H04B1/406 ,  H04B15/02 ,  H04B15/04 ,  H04B2215/064

摘要： A radio-frequency (RF) receiver includes a receiver analog circuitry and a receiver digital circuitry. The receiver analog circuitry resides within a first integrated circuit and the receiver digital circuitry resides within a second integrated circuit. The second integrated circuit couples to the first integrated circuit via a one-bit digital interface. The receiver analog circuitry receives an RF signal and processes the received RF signal to generate a digital signal. The receiver analog circuitry provides the digital signal to the receiver digital circuitry. The receiver digital circuitry includes a digital down-converter circuitry that mixes the digital signal with an intermediate frequency (IF) local oscillator (LO) signal to generate a digital down-converted signal. The receiver digital circuitry also includes a digital filter circuitry that filters the digital down-converted signal to generate a filtered digital signal.

摘要翻译： 射频（RF）接收机包括接收机模拟电路和接收机数字电路。 接收器模拟电路驻留在第一集成电路内，并且接收器数字电路位于第二集成电路内。 第二集成电路通过一位数字接口耦合到第一集成电路。 接收机模拟电路接收RF信号并处理所接收的RF信号以产生数字信号。 接收机模拟电路将数字信号提供给接收机数字电路。 接收机数字电路包括数字下变频器电路，其将数字信号与中频（IF）本地振荡器（LO）信号混合以产生数字下变频信号。 接收机数字电路还包括数字滤波器电路，其对数字下变频信号进行滤波以产生经滤波的数字信号。

公开(公告)号：US08224259B2

公开(公告)日：2012-07-17

申请号：US12715361

申请日：2010-03-01

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

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

IPC分类号： H04B1/38 ,  H04W24/00

CPC分类号： H04B1/28 ,  H04B1/0003 ,  H04B1/38 ,  H04B1/406 ,  H04B15/02 ,  H04B15/04 ,  H04B2215/064

摘要： A radio-frequency (RF) receiver includes a receiver analog circuitry and a receiver digital circuitry. The receiver analog circuitry resides within a first integrated circuit and the receiver digital circuitry resides within a second integrated circuit. The second integrated circuit couples to the first integrated circuit via a one-bit digital interface. The receiver analog circuitry receives an RF signal and processes the received RF signal to generate a digital signal. The receiver analog circuitry provides the digital signal to the receiver digital circuitry. The receiver digital circuitry includes a digital down-converter circuitry that mixes the digital signal with an intermediate frequency (IF) local oscillator (LO) signal to generate a digital down-converted signal. The receiver digital circuitry also includes a digital filter circuitry that filters the digital down-converted signal to generate a filtered digital signal.

摘要翻译： 射频（RF）接收机包括接收机模拟电路和接收机数字电路。 接收器模拟电路驻留在第一集成电路内，并且接收器数字电路位于第二集成电路内。 第二集成电路通过一位数字接口耦合到第一集成电路。 接收机模拟电路接收RF信号并处理所接收的RF信号以产生数字信号。 接收机模拟电路将数字信号提供给接收机数字电路。 接收机数字电路包括数字下变频器电路，其将数字信号与中频（IF）本地振荡器（LO）信号混合以产生数字下变频信号。 接收机数字电路还包括数字滤波器电路，其对数字下变频信号进行滤波以产生经滤波的数字信号。