公开(公告)号：US20150180516A1

公开(公告)日：2015-06-25

申请号：US14137042

申请日：2013-12-20

Applicant: Motorola Solutions, Inc.

Inventor： Raul Salvi ,  Joseph P. Heck ,  Geetha B. Nagaraj ,  Shafiullah Syed

IPC: H04B1/00 ,  H04B1/16

CPC classification number: H04B1/123 ,  H03G3/3052 ,  H04B1/0067

Abstract: Disclosed herein are systems for and methods of using a mirrored wideband baseband current for automatic gain control of an RF receiver. In an embodiment, a system includes an RF receiver having an adjustable gain and being configured to direct convert a received wideband RF signal to a wideband baseband current signal. The system further includes a current replicator coupled to the receiver and configured to generate a mirrored current of the wideband baseband current signal. The system further includes a wideband signal-level detector configured to receive the mirrored current from the current replicator, and to measure and output a signal-level value of the mirrored current. The system further includes an automatic gain-control circuit configured to receive the signal-level value from the wideband signal-level detector, and to adjust the gain of the receiver based at least in part on the received signal-level value.

Abstract translation: 本文公开了用于RF接收机的自动增益控制的用于镜像宽带基带电流的系统和方法。 在一个实施例中，系统包括具有可调节增益的RF接收机，并且被配置为将接收到的宽带RF信号直接转换为宽带基带电流信号。 该系统还包括耦合到接收器并被配置为产生宽带基带电流信号的镜像电流的当前复制器。 该系统还包括宽带信号电平检测器，其配置为从当前复制器接收镜像电流，并测量并输出镜像电流的信号电平值。 该系统还包括自动增益控制电路，其被配置为从宽带信号电平检测器接收信号电平值，并且至少部分地基于接收到的信号电平值来调整接收机的增益。

公开(公告)号：US20140145790A1

公开(公告)日：2014-05-29

申请号：US13687589

申请日：2012-11-28

Applicant: MOTOROLA SOLUTIONS, INC.

Inventor： Shafiullah Syed ,  Joseph P. Heck

IPC: H03G3/30

CPC classification number: H03G1/0023 ,  H03G1/0029

Abstract: An apparatus with associated gain and input impedance includes gain devices, a switching unit and a resistor. A first differential pair of gain devices and associated bias circuitry is configured to operate in a full gain mode. A second differential pair of gain devices is configured to operate in a reduced gain mode. The switching unit is configured to disable the first differential pair of gain devices and enable the second differential pair of gain devices in the reduced gain mode and to disable the second differential pair of gain devices and enable the first differential pair of gain devices in the full gain mode. The resistor is configured to maintain constant input impedance of the apparatus when in the reduced gain mode.

Abstract translation: 具有相关增益和输入阻抗的装置包括增益器件，开关单元和电阻器。 增益器件和相关偏置电路的第一差分对被配置为以全增益模式工作。 增益器件的第二差分对被配置为以减小增益模式工作。 开关单元被配置为禁用第一差分增益器件对，并且使得能够在减小增益模式中的第二差分增益器件对，并且禁用第二差分增益器件对，并且使第一差分增益器件的全部使能 增益模式。 电阻器被配置为在处于减小增益模式时保持装置的恒定输入阻抗。

公开(公告)号：US10064204B2

公开(公告)日：2018-08-28

申请号：US15092535

申请日：2016-04-06

Applicant: MOTOROLA SOLUTIONS, INC.

Inventor： David P. Gurney ,  Joseph P. Heck ,  Bradley M. Hiben ,  Stephen L. Kuffner

IPC: H04W72/08 ,  H04W4/02

CPC classification number: H04W72/085 ,  H04B1/0003 ,  H04W4/025 ,  H04W72/082

Abstract: Method, device, and system for setting an operating parameter of a radio receiver included in a radio based on a predicted radio signal environment. One method includes determining an operating location of the radio. The method also includes determining a transmission characteristic of at least one base station. The method further includes predicting, with an electronic processor, the radio signal environment of the radio receiver based on the transmission characteristic of the at least one base station and the operating location of the radio. The method also includes setting the operating parameter of the radio receiver based on the radio signal environment.

公开(公告)号：US20190036747A1

公开(公告)日：2019-01-31

申请号：US15660723

申请日：2017-07-26

Applicant: MOTOROLA SOLUTIONS, INC.

Inventor： Joseph P. Heck ,  Christopher Calvo ,  Rodger W. Caruthers ,  Nicholas G. Cafaro ,  Geetha B. Nagaraj ,  Raul Salvi

IPC: H04L27/14 ,  H04B1/16

CPC classification number: H04L27/14 ,  H03K5/1565 ,  H04B1/0007 ,  H04B1/16

Abstract: Systems and methods for processing radiofrequency signals using modulation duty cycle scaling. One system includes a first receive path configured to directly sample a first signal in a first frequency range. The system includes a second receive path configured to convert a second signal in a second frequency range. The second receive path includes a receive modulator operating over a duty cycle. The receive modulator is configured to adjust the duty cycle by a predetermined scaling factor.

公开(公告)号：US20170295582A1

公开(公告)日：2017-10-12

申请号：US15092535

申请日：2016-04-06

Applicant: MOTOROLA SOLUTIONS, INC.

Inventor： David P. Gurney ,  Joseph P. Heck ,  Bradley M. Hiben ,  Stephen L. Kuffner

IPC: H04W72/08 ,  H04W4/02

CPC classification number: H04W72/085 ,  H04B1/0003 ,  H04W4/025 ,  H04W72/082

Abstract: Method, device, and system for setting an operating parameter of a radio receiver included in a radio based on a predicted radio signal environment. One method includes determining an operating location of the radio. The method also includes determining a transmission characteristic of at least one base station. The method further includes predicting, with an electronic processor, the radio signal environment of the radio receiver based on the transmission characteristic of the at least one base station and the operating location of the radio. The method also includes setting the operating parameter of the radio receiver based on the radio signal environment.

公开(公告)号：US08810316B2

公开(公告)日：2014-08-19

申请号：US13687589

申请日：2012-11-28

Applicant: Motorola Solutions, Inc.

Inventor： Shafiullah Syed ,  Joseph P. Heck

IPC: H03F3/45 ,  H03G3/30

CPC classification number: H03G1/0023 ,  H03G1/0029

Abstract: An apparatus with associated gain and input impedance includes gain devices, a switching unit and a resistor. A first differential pair of gain devices and associated bias circuitry is configured to operate in a full gain mode. A second differential pair of gain devices is configured to operate in a reduced gain mode. The switching unit is configured to disable the first differential pair of gain devices and enable the second differential pair of gain devices in the reduced gain mode and to disable the second differential pair of gain devices and enable the first differential pair of gain devices in the full gain mode. The resistor is configured to maintain constant input impedance of the apparatus when in the reduced gain mode.

Abstract translation: 具有相关增益和输入阻抗的装置包括增益器件，开关单元和电阻器。 增益器件和相关偏置电路的第一差分对被配置为以全增益模式工作。 增益器件的第二差分对被配置为以减小增益模式工作。 开关单元被配置为禁用第一差分增益器件对，并且使能增益器件的第二差分对处于减小的增益模式，并且禁用第二差分增益器件对，并且使第一差分对的增益器件成为全 增益模式。 电阻器被配置为在处于减小增益模式时保持装置的恒定输入阻抗。

公开(公告)号：US09712140B1

公开(公告)日：2017-07-18

申请号：US15190072

申请日：2016-06-22

Applicant: MOTOROLA SOLUTIONS, INC.

Inventor： Raul Salvi ,  Joseph P. Heck

IPC: H03H11/12 ,  H03H11/04 ,  H03H11/06 ,  H04B1/10 ,  H04L7/00

CPC classification number: H03H11/0472 ,  H03H11/06 ,  H03H2210/012 ,  H03H2210/025 ,  H03H2210/026 ,  H03H2210/028 ,  H04B1/1081

Abstract: A tunable multi-path filter, a method for filtering a radio frequency signal with the tunable multi-path filter, and a communication device including the tunable multi-path filter. In one embodiment, the tunable multi-path filter includes a voltage controlled current source, an oscillator source, and at least two filter paths. The voltage controlled current source for receiving a radio frequency (RF) signal and generating a current signal. The oscillator source for generating a tunable clock signal. Each of the at least two filter paths are coupled to the voltage controlled current source and the oscillator source, and are configured to generate an output voltage signal based at least in part on the current signal and the tunable clock signal. In some embodiments, the tunable multi-path filter further includes a carrier signal rejection component that is configured to reduce the carrier feedthrough in the output voltage signals.

公开(公告)号：US10439850B2

公开(公告)日：2019-10-08

申请号：US15660723

申请日：2017-07-26

Applicant: MOTOROLA SOLUTIONS, INC.

Inventor： Joseph P. Heck ,  Christopher Calvo ,  Rodger W. Caruthers ,  Nicholas G. Cafaro ,  Geetha B. Nagaraj ,  Raul Salvi

IPC: H04B1/16 ,  H04L27/14 ,  H03K5/156 ,  H04B1/00

Abstract: Systems and methods for processing radiofrequency signals using modulation duty cycle scaling. One system includes a first receive path configured to directly sample a first signal in a first frequency range. The system includes a second receive path configured to convert a second signal in a second frequency range. The second receive path includes a receive modulator operating over a duty cycle. The receive modulator is configured to adjust the duty cycle by a predetermined scaling factor.