专利快速检索-快速检索全球专利，免费商用专利数据库-IPRDB

1. 发明授权

US07412213B1 Envelope limiting for polar modulators 有权
标题翻译：极性调制器的信封限制
公开(公告)号：US07412213B1
公开(公告)日：2008-08-12
申请号：US11538396
申请日：2006-10-03
申请人： John B. Groe , Carl Thomas Hardin , Mahbuba Sheba
发明人： John B. Groe , Carl Thomas Hardin , Mahbuba Sheba
IPC分类号： H04B1/02 , H03C3/38
CPC分类号： H03G7/06 , H03C5/00 , H03F1/02 , H03F3/24 , H03G3/3042 , H04B2001/0408 , H04B2001/045 , H04L27/361
摘要： Envelope limiting for a polar modulator. A system is provided that intelligently compresses the amplitude modulation in a polar modulator so that it can be implemented with a single-stage variable gain amplifier. Limiting the amplitude modulation range on the low side prevents collapse of the transmit signal's time-varying envelope and eases circuit implementation. Limiting the amplitude modulation range on the high side reduces the peak-to-average ratio of the waveform and thereby improves the efficiency of the radio transmitter.
摘要翻译：极性调制器的信封限制。提供了一种智能地压缩极性调制器中的幅度调制的系统，使得其可以用单级可变增益放大器来实现。限制低侧的幅度调制范围可以防止发射信号的时变包络的崩溃，并且简化电路实现。限制高侧的幅度调制范围降低了波形的峰均比，从而提高了无线电发射机的效率。

2. 发明授权

US07171170B2 Envelope limiting for polar modulators 有权
标题翻译：极性调制器的信封限制
公开(公告)号：US07171170B2
公开(公告)日：2007-01-30
申请号：US10202501
申请日：2002-07-23
申请人： John B. Groe , Carl Thomas Hardin , Mahbuba Sheba
发明人： John B. Groe , Carl Thomas Hardin , Mahbuba Sheba
IPC分类号： H04B1/02 , H03C3/38
CPC分类号： H03G7/06 , H03C5/00 , H03F1/02 , H03F3/24 , H03G3/3042 , H04B2001/0408 , H04B2001/045 , H04L27/361
摘要： Envelope limiting for a polar modulator. A system is provided that intelligently compresses the amplitude modulation in a polar modulator so that it can be implemented with a single-stage variable gain amplifier. Limiting the amplitude modulation range on the low side prevents collapse of the transmit signal's time-varying envelope and eases circuit implementation. Limiting the amplitude modulation range on the high side reduces the peak-to-average ratio of the waveform and thereby improves the efficiency of the radio transmitter.
摘要翻译：极性调制器的信封限制。提供了一种智能地压缩极性调制器中的幅度调制的系统，使得其可以用单级可变增益放大器来实现。限制低侧的幅度调制范围可以防止发射信号的时变包络的崩溃，并且简化电路实现。限制高侧的幅度调制范围降低了波形的峰均比，从而提高了无线电发射机的效率。

3. 发明授权

US07999608B1 Integrated RF notch filters 有权
标题翻译：集成RF陷波滤波器
公开(公告)号：US07999608B1
公开(公告)日：2011-08-16
申请号：US12496419
申请日：2009-07-01
申请人： John B. Groe , Lucio Marc Facchni
发明人： John B. Groe , Lucio Marc Facchni
IPC分类号： H03K5/00
CPC分类号： H03F1/223 , H03F3/195 , H03F3/45188 , H03F2200/294 , H03F2200/391 , H03F2203/45386 , H03H7/03 , H03H7/12 , H03H7/1791 , H03H11/1213 , H03H11/245 , H03H2007/013 , H03H2011/0488
摘要： Apparatus and methods for providing integrated RF notch filter subsystems having enhanced Q values are described. An integrated notch filter includes an LC filter element and a Q-enhancement circuit coupled to the LC filter element, with the Q-enhancement circuit configured to offset resistive losses in the LC filter element to adjust the Q value of the filter system. A transceiver having multiple LNAs for various bands may be provided to a single notch filter system including a Q-enhancement circuit.
摘要翻译：描述了用于提供具有增强的Q值的集成RF陷波滤波器子系统的装置和方法。集成陷波滤波器包括耦合到LC滤波器元件的LC滤波器元件和Q增强电路，其中Q增强电路被配置为抵消LC滤波器元件中的电阻损耗以调整滤波器系统的Q值。可以向包括Q增强电路的单陷波滤波器系统提供具有用于各种频带的多个LNA的收发器。

4. 发明授权

US07868691B2 Commutating amplifier with wide dynamic range 有权
标题翻译：整流放大器具有宽动态范围
公开(公告)号：US07868691B2
公开(公告)日：2011-01-11
申请号：US12351461
申请日：2009-01-09
申请人： John B. Groe , Michael Naone Farias , Eric Shapiro
发明人： John B. Groe , Michael Naone Farias , Eric Shapiro
IPC分类号： H03F1/02 , H03F1/14
CPC分类号： H03F3/211 , H03F3/45188 , H03F2203/45566 , H03F2203/45731
摘要： Variable gain commutating amplifier apparatus and methods for use in a polar modulator are described. The apparatus may include two or more commutating amplifier stages configured to be switched to an output load based on a desired amplitude and/or transmit power level. The amplifier stages may include cross-coupled differential pairs to cancel RF carrier feedthrough. An additional R-2R ladder circuit may be provided to further extend the dynamic range by reducing the output power at the lowest output stages.
摘要翻译：描述了用于极性调制器的可变增益整流放大器装置和方法。该装置可以包括两个或更多个整流放大器级，其被配置为基于期望的幅度和/或发射功率电平切换到输出负载。放大器级可以包括交叉耦合的差分对以消除RF载波馈通。可以提供另外的R-2R梯形电路以通过降低最低输出级的输出功率来进一步扩展动态范围。

5. 发明授权

US07764139B1 Polar modulation with extended AM 有权
标题翻译：极性调制与扩展AM
公开(公告)号：US07764139B1
公开(公告)日：2010-07-27
申请号：US12324992
申请日：2008-11-28
申请人： John B. Groe
发明人： John B. Groe
IPC分类号： H03C3/00 , H03C3/38
CPC分类号： H03C5/00
摘要： Apparatus and methods for adjusting spectral characteristics of a polar modulation signal in a polar modulator are described. A detection circuit is configured to determine when an FM signal component of the modulation signal exceeds a threshold value. The output of the detection circuit is coupled with FM and AM mapping circuits to selectively map the FM signal component and an AM signal component of the modulation signal to mapped signals, thereby reducing FM deviation.
摘要翻译：描述了用于调节极性调制器中的极性调制信号的频谱特性的装置和方法。检测电路被配置为确定调制信号的FM信号分量何时超过阈值。检测电路的输出与FM和AM映射电路耦合，以选择性地将FM信号分量和调制信号的AM信号分量映射到映射信号，从而减少FM偏差。

6. 发明授权

US07679468B1 KFM frequency tracking system using a digital correlator 有权
标题翻译： KFM频率跟踪系统采用数字相关器
公开(公告)号：US07679468B1
公开(公告)日：2010-03-16
申请号：US11829817
申请日：2007-07-27
申请人： John B. Groe , Kenneth Scott Walley
发明人： John B. Groe , Kenneth Scott Walley
IPC分类号： H03C3/06
CPC分类号： H03C3/0925 , H03C3/0933 , H03C3/0941 , H03C3/0958 , H03C3/0991
摘要： An apparatus for providing a two point phase/frequency modulation system is disclosed herein. The apparatus includes a first network configured to introduce an offset to center a signal applied to a VCO. The apparatus further includes a second network configured to set a gain of the VCO. A phase tracking network is configured to dynamically adjust the offset and the gain.
摘要翻译：本文公开了一种用于提供双点相位/频率调制系统的装置。该装置包括被配置为引入偏移以使施加到VCO的信号居中的第一网络。该装置还包括被配置为设置VCO的增益的第二网络。相位跟踪网络配置为动态调整偏移和增益。

7. 发明授权

US07522005B1 KFM frequency tracking system using an analog correlator 有权
标题翻译： KFM频率跟踪系统使用模拟相关器
公开(公告)号：US07522005B1
公开(公告)日：2009-04-21
申请号：US11829828
申请日：2007-07-27
申请人： John B. Groe , Kenneth Scott Walley
发明人： John B. Groe , Kenneth Scott Walley
IPC分类号： H03L7/08 , H03L7/099 , H03L7/18
CPC分类号： H03C3/08 , H03C3/0908 , H03L2207/06
摘要： An apparatus providing a phase/frequency modulation system is disclosed herein. The apparatus includes a first circuit configured to introduce an offset to center a signal applied to a VCO. The apparatus further includes a second circuit configured to set a gain of the VCO. A frequency tracking network is configured to dynamically adjust one or both of the offset and the gain.
摘要翻译：本文公开了一种提供相位/频率调制系统的装置。该装置包括被配置为引入偏置以使施加到VCO的信号居中的第一电路。该装置还包括被配置为设置VCO的增益的第二电路。频率跟踪网络被配置为动态地调整偏移和增益中的一个或两个。

8. 发明授权

US06205325B1 Active radio frequency mixer circuit with feedback 有权
标题翻译：有源射频混频电路具有反馈功能
公开(公告)号：US06205325B1
公开(公告)日：2001-03-20
申请号：US09223906
申请日：1998-12-31
申请人： John B. Groe
发明人： John B. Groe
IPC分类号： H04B128
CPC分类号： H03F1/32 , H03D7/1433 , H03D7/1458 , H03D7/1491 , H03D2200/0043 , H04M3/00
摘要： An active mixer circuit, and an associated method, includes a feedback element which increases the linearity of the mixer circuit so that the mixer circuit is operable over a wider dynamic range than typically permitted of conventional, active mixer circuits. The mixer circuit includes a transconductance stage including a pair of transconductance transistors. Signals are applied through both of the transconductance transistors in parallel. The feedback element is coupled to an output side of a first of the transconductance transistors. And, a mixing stage is coupled to an output side of a second of the transconductance transistors.
摘要翻译：有源混频器电路和相关联的方法包括反馈元件，其增加混频器电路的线性，使得混频器电路可以在通常允许的常规有源混频器电路的更宽的动态范围上操作。混频器电路包括跨导级，其包括一对跨导晶体管。信号通过并联的跨导晶体管施加。反馈元件耦合到第一跨导晶体管的输出侧。并且，混频级耦合到第二跨导晶体管的输出侧。

9. 发明授权

US07920033B1 Systems and methods for frequency modulation adjustment 有权
标题翻译：用于调频调制的系统和方法
公开(公告)号：US07920033B1
公开(公告)日：2011-04-05
申请号：US11863772
申请日：2007-09-28
申请人： John B. Groe , Carrie Lo , Joseph Austin
发明人： John B. Groe , Carrie Lo , Joseph Austin
IPC分类号： H03C3/02
CPC分类号： H03C3/0925
摘要： A system and method for providing, among other things, wideband phase modulation is described. Several embodiments include a scaling network for scaling an input modulation signal in accordance with a scaling parameter and thereby generating a scaled modulation signal that is applied to a voltage-controlled oscillator of a phase-locked loop. A sensing network may also be included for detecting changes in one or more parameters characterizing the voltage-controlled oscillator. A calibration adjustment network may additionally be included for adjusting the scaling parameter in accordance with the changes in the one or more parameters.
摘要翻译：描述了一种用于提供宽带相位调制的系统和方法。几个实施例包括缩放网络，用于根据缩放参数缩放输入调制信号，从而生成施加到锁相环的压控振荡器的缩放调制信号。还可以包括感测网络，用于检测表征压控振荡器的一个或多个参数的变化。可以另外包括校准调整网络，以根据一个或多个参数的变化来调整缩放参数。

10. 发明授权

US07894545B1 Time alignment of polar transmitter 有权
标题翻译：极性发射机的时间对准
公开(公告)号：US07894545B1
公开(公告)日：2011-02-22
申请号：US11837983
申请日：2007-08-13
申请人： John B. Groe
发明人： John B. Groe
IPC分类号： H04L27/04
CPC分类号： H04L27/361
摘要： An alignment apparatus for use with a polar transmitter system is disclosed herein. The alignment apparatus includes a signal alignment module configured to apply an amplitude modulation control signal and a frequency modulation control signal to the polar transmitter in accordance with a defined timing relationship. A time alignment network, operatively coupled between an output of the polar transmitter system and the signal alignment module, sets the defined timing relationship.
摘要翻译：本文公开了一种与极性发射器系统一起使用的对准装置。对准装置包括：信号对准模块，被配置为根据定义的时序关系向极性发射器施加幅度调制控制信号和频率调制控制信号。可操作地耦合在极性发射器系统的输出端和信号对准模块之间的时间对准网络设定所定义的定时关系。

你已经成功收藏专利！

检索式保存成功!

IPRDB

热门服务

关于我们

友情链接

联系方式