公开(公告)号：US20050003762A1

公开(公告)日：2005-01-06

申请号：US10878880

申请日：2004-06-28

Applicant: Donald Kerth ,  Richard Behrens ,  Jeffrey Scott ,  G. Vishakhadatta ,  G. Tuttle ,  Vishnu Srinivasan

Inventor： Donald Kerth ,  Richard Behrens ,  Jeffrey Scott ,  G. Vishakhadatta ,  G. Tuttle ,  Vishnu Srinivasan

IPC: H04B1/28 ,  H04B1/40 ,  H04B15/02 ,  H04B15/04 ,  H04B1/10

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

Abstract: 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.

Abstract translation: 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：US20070054629A1

公开(公告)日：2007-03-08

申请号：US10730404

申请日：2003-12-08

Applicant: James Maligeorgos ,  Augusto Marques ,  Lysander Lim ,  G. Tuttle ,  Aslamali Rafi ,  Tod Paulus ,  Gregory Uehara ,  Jeffrey Scott ,  Richard Behrens ,  Donald Kerth ,  G. Vishakhadatta ,  Vishnu Srinivasan ,  Caiyi Wang

Inventor： James Maligeorgos ,  Augusto Marques ,  Lysander Lim ,  G. Tuttle ,  Aslamali Rafi ,  Tod Paulus ,  Gregory Uehara ,  Jeffrey Scott ,  Richard Behrens ,  Donald Kerth ,  G. Vishakhadatta ,  Vishnu Srinivasan ,  Caiyi Wang

IPC: H04B1/38

CPC classification number: H04B1/30 ,  H03J2200/10 ,  H04L27/0002

Abstract: 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.

Abstract translation: 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：US20060141973A1

公开(公告)日：2006-06-29

申请号：US11287995

申请日：2005-11-28

Applicant: Richard Behrens ,  Tod Paulus ,  Mark Spurbeck ,  Vishnu Srinivasan ,  Donald Kerth ,  Jeffrey Scott ,  G. Tuttle ,  G. Vishakhadatta

Inventor： Richard Behrens ,  Tod Paulus ,  Mark Spurbeck ,  Vishnu Srinivasan ,  Donald Kerth ,  Jeffrey Scott ,  G. Tuttle ,  G. Vishakhadatta

IPC: H04B1/26 ,  H04B1/28

CPC classification number: H04B1/28 ,  H04B1/0003 ,  H04B1/38 ,  H04B1/406 ,  H04B15/02 ,  H04B15/04 ,  H04B2215/064

Abstract: 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.

公开(公告)号：US20050143040A1

公开(公告)日：2005-06-30

申请号：US10749012

申请日：2003-12-30

Applicant: Donald Kerth ,  G. Tuttle

Inventor： Donald Kerth ,  G. Tuttle

IPC: H04B1/28 ,  H04B1/10

CPC classification number: H04B1/0007 ,  H04B1/28

Abstract: A method and apparatus for enhancing signal quality within a wireless receiver are disclosed. An image of a desired signal is down-converted to a baseband signal by a digital down converter. The energy of the baseband signal is subsequently determined. If the energy of the baseband signal is equal to or greater than a predetermined threshold, then the IF is swapped for any incoming signals. If the energy of the baseband signal is less than the predetermined threshold, then the IF is maintained for any incoming signals.

Abstract translation: 公开了一种用于增强无线接收机内的信号质量的方法和装置。 所需信号的图像由数字下变频器下变频为基带信号。 随后确定基带信号的能量。 如果基带信号的能量等于或大于预定阈值，则IF被交换用于任何输入信号。 如果基带信号的能量小于预定阈值，则对于任何输入信号都保持IF。

公开(公告)号：US20060068736A1

公开(公告)日：2006-03-30

申请号：US11112616

申请日：2005-04-22

Applicant: Donald Kerth ,  James Maligeorgos ,  Dylan Hester ,  Lysander Lim ,  Augusto Marques ,  G. Tuttle

Inventor： Donald Kerth ,  James Maligeorgos ,  Dylan Hester ,  Lysander Lim ,  Augusto Marques ,  G. Tuttle

IPC: H04B1/06 ,  H04B7/00

CPC classification number: H03J7/04 ,  H03B5/36 ,  H03B2201/025 ,  H03J2200/10

Abstract: A technique includes generating an analog voltage to control a frequency for an oscillator. The analog signal is converted into a digital signal, and the frequency is controlled in response to the digital signal.

Abstract translation: 一种技术包括产生模拟电压以控制振荡器的频率。 模拟信号被转换成数字信号，并且响应于数字信号来控制频率。

公开(公告)号：US20060003722A1

公开(公告)日：2006-01-05

申请号：US10881579

申请日：2004-06-30

Applicant: G. Tuttle ,  Dan Kasha ,  Donald Kerth

Inventor： G. Tuttle ,  Dan Kasha ,  Donald Kerth

IPC: H04B1/18 ,  H04B1/26 ,  H04B1/10

CPC classification number: H04B1/10 ,  H03J1/0041 ,  H04B1/28

Abstract: A system and method are disclosed for dynamically selecting high-side injection or low-side injection of local oscillator mixing signals based upon an assessment of signal power within the input signal spectrum that could cause unwanted images in the processed signal. This image rejection assessment provides an advantageous basis upon which to make dynamic high-side versus low-side injection determinations.

Abstract translation: 公开了一种系统和方法，用于基于对输入信号频谱内的信号功率的评估来动态地选择本地振荡器混合信号的高侧注入或低侧注入，这可能导致处理信号中的不需要的图像。 这种镜像抑制评估提供了进行动态高侧对低侧注射测定的有利基础。

公开(公告)号：US20080009261A1

公开(公告)日：2008-01-10

申请号：US11900997

申请日：2007-09-14

Applicant: G. Tuttle ,  Dan Kasha

Inventor： G. Tuttle ,  Dan Kasha

IPC: H04B1/26

CPC classification number: H04B1/18 ,  H04B1/30

Abstract: An integrated low-IF (low intermediate frequency) terrestrial broadcast receiver and associated method are disclosed that provide an advantageous and cost-efficient solution. The integrated receiver includes a mixer, local oscillator generation circuitry, low-IF conversion circuitry, and DSP circuitry. And the integrated receiver is particularly suited for small, portable devices and the reception of terrestrial audio broadcasts, such as FM and AM terrestrial audio broadcast, in such portable devices.

Abstract translation: 公开了一种集成的低中频（低中频）地面广播接收机和相关方法，其提供了有利且具有成本效益的解决方案。 集成接收器包括混频器，本地振荡器产生电路，低IF转换电路和DSP电路。 并且集成接收机特别适用于小型便携式设备以及在这种便携式设备中接收地面音频广播，诸如FM和AM地面音频广播。

公开(公告)号：US20060003728A1

公开(公告)日：2006-01-05

申请号：US10880483

申请日：2004-06-30

Applicant: G. Tuttle ,  David Welland ,  Scott Willingham

Inventor： G. Tuttle ,  David Welland ,  Scott Willingham

IPC: H04B1/28

CPC classification number: H04B1/30

Abstract: A ratiometric clock system for an integrated receiver and associated method are disclosed that provide an advantageous solution for combining digital signal processing (DSP) circuitry on the same integrated circuit as mixer and local oscillator (LO) generation circuitry. The generation circuitry generates an oscillation signal that is passed through a first divider to generate mixing signals for the mixer and that is passed through a second divider to generate a digital clock signal that is utilized by the DSP circuitry. This digital clock signal can be utilized by integrated analog-to-digital conversion circuitry, as well.

Abstract translation: 公开了一种用于集成接收机和相关方法的比例时钟系统，其提供用于将数字信号处理（DSP）电路组合在与混频器和本地振荡器（LO）生成电路相同的集成电路上的有利解决方案。 产生电路产生振荡信号，该信号通过第一分频器以产生用于混频器的混频信号，并通过第二分频器产生由DSP电路利用的数字时钟信号。 该数字时钟信号也可以由集成的模数转换电路使用。

公开(公告)号：US20080051918A1

公开(公告)日：2008-02-28

申请号：US11824596

申请日：2007-06-29

Applicant: G. Tuttle ,  Wade Gillham ,  Dan Kasha

Inventor： G. Tuttle ,  Wade Gillham ,  Dan Kasha

IPC: G06F17/00

CPC classification number: H04B1/1646 ,  H04B1/034

Abstract: An apparatus includes processor and a control interface. The processor is adapted to in a first mode of operation, operate as part of one of a wireless receiver and a wireless transmitter and in a second mode of operation. The processor also processes a first audio band signal to generate a second audio band signal. The control interface selects one of the first and second modes of operation.

Abstract translation: 一种装置包括处理器和控制接口。 处理器适于处于第一操作模式，作为无线接收机和无线发射机之一的一部分操作，并且处于第二操作模式。 处理器还处理第一音频信号以产生第二音频信号。 控制界面选择第一和第二操作模式之一。

公开(公告)号：US20060068744A1

公开(公告)日：2006-03-30

申请号：US11112153

申请日：2005-04-22

Applicant: James Maligeorgos ,  Dylan Hester ,  Augusto Marques ,  G. Tuttle

Inventor： James Maligeorgos ,  Dylan Hester ,  Augusto Marques ,  G. Tuttle

IPC: H04B1/26 ,  H04B15/00

CPC classification number: H03L7/00

Abstract: A technique includes selectively coupling impedances to an oscillator to establish a first frequency of operation of the oscillator. The technique includes repeating the selective coupling in a feedback loop to cause the first frequency to be near a second frequency.