公开(公告)号：US20170264325A1

公开(公告)日：2017-09-14

申请号：US15609946

申请日：2017-05-31

Applicant: Maxlinear, Inc.

Inventor： Subramanian Anantharaman Chandrasekarapuram ,  Anand Anandakumar ,  Stephane Laurent-Michel ,  Sheng Ye ,  Raja Pullela ,  Glenn Chang ,  Vamsi Paidi

IPC: H04B1/10

CPC classification number: H04B1/1027

Abstract: A system comprises a microwave backhaul outdoor unit having a first resonant circuit, phase error determination circuitry, and phase error compensation circuitry. The first resonant circuit is operable to generate a first signal characterized by a first amount of phase noise and a first amount of temperature stability. The phase error determination circuitry is operable to generate a phase error signal indicative of phase error between the first signal and a second signal, wherein the second signal is characterized by a second amount of phase noise that is greater than the first amount of phase noise, and the second signal is characterized by a second amount of temperature instability that is less than the first amount of temperature instability. The phase error compensation circuitry is operable to adjust the phase of a data signal based on the phase error signal, the adjustment resulting in a phase compensated signal.

公开(公告)号：US20170214421A1

公开(公告)日：2017-07-27

申请号：US15483064

申请日：2017-04-10

Applicant: Maxlinear, Inc.

Inventor： Raja Pullela ,  Wenjian Chen ,  Vamsi Paidi

IPC: H04B1/16 ,  H03F1/56 ,  H03F3/72 ,  H03F3/195

CPC classification number: H04B1/16 ,  H03F1/565 ,  H03F3/195 ,  H03F2200/06 ,  H03F2200/165 ,  H03F2200/171 ,  H03F2200/294 ,  H03F2200/429 ,  H03F2200/451 ,  H03F2203/7209 ,  H03G5/28 ,  H03H7/0115 ,  H04B1/005

Abstract: Methods and systems for a configurable low-noise amplifier with programmable band-selection filters may comprise a receiver with a low-noise amplifier (LNA) with first and second input terminals and differential output terminals; a low pass filter operably coupled to the LNA; a high pass filter operably coupled to the second input terminal of the LNA; and a signal source input coupled to the low pass filter and the high pass filter. The LNA may be operable to receive signals in a pass band of the high pass filter and a pass band of the low pass filter. The receiver may be operable to amplify input signals in the pass band of a first filter but not signals in the pass band of the second filter by operably coupling the second to ground.

公开(公告)号：US09685983B2

公开(公告)日：2017-06-20

申请号：US14976529

申请日：2015-12-21

Applicant: Maxlinear, Inc.

Inventor： Subramanian Anantharaman Chandrasekarapuram ,  Anand Anandakumar ,  Stephane Laurent-Michel ,  Sheng Ye ,  Raja Pullela ,  Glenn Chang ,  Vamsi Paidi

IPC: H04L7/00 ,  H04B1/10

CPC classification number: H04B1/1027

Abstract: A system comprises a microwave backhaul outdoor unit having a first resonant circuit, phase error determination circuitry, and phase error compensation circuitry. The first resonant circuit is operable to generate a first signal characterized by a first amount of phase noise and a first amount of temperature stability. The phase error determination circuitry is operable to generate a phase error signal indicative of phase error between the first signal and a second signal, wherein the second signal is characterized by a second amount of phase noise that is greater than the first amount of phase noise, and the second signal is characterized by a second amount of temperature instability that is less than the first amount of temperature instability. The phase error compensation circuitry is operable to adjust the phase of a data signal based on the phase error signal, the adjustment resulting in a phase compensated signal.

公开(公告)号：US09484975B2

公开(公告)日：2016-11-01

申请号：US14961987

申请日：2015-12-08

Applicant: MaxLinear, Inc.

Inventor： Kishore Seendripu ,  Raja Pullela ,  Madhukar Reddy ,  Timothy Gallagher

IPC: H04B1/38 ,  H04B1/40 ,  H04L25/02 ,  H04L27/20 ,  H04L27/22 ,  H04H60/19 ,  H04B1/00 ,  H04L27/36 ,  H04L27/38 ,  H04B1/74

CPC classification number: H04B1/745 ,  H04B1/0067 ,  H04B1/40 ,  H04H60/19 ,  H04L25/02 ,  H04L27/20 ,  H04L27/2003 ,  H04L27/22 ,  H04L27/36 ,  H04L27/362 ,  H04L27/38

Abstract: A microwave backhaul system may comprise a monolithic integrated circuit comprising an on-chip transceiver, digital baseband processing circuitry, and auxiliary interface circuitry. The on-chip transceiver may process a microwave signal from an antenna element to generate a first pair of quadrature baseband signals and convey the first pair of phase-quadrature baseband signals to the digital baseband processing circuitry. The auxiliary interface circuitry may receive one or more auxiliary signals from a source that is external to the monolithic integrated circuit and convey the one or more auxiliary signals to the digital baseband processing circuitry. The digital baseband processing circuitry may be operable to process signals to generate one or more second pairs of phase-quadrature digital baseband signals.

公开(公告)号：US20160204883A1

公开(公告)日：2016-07-14

申请号：US15076920

申请日：2016-03-22

Applicant: MaxLinear, Inc.

Inventor： Raja Pullela ,  Curtis Ling

IPC: H04B17/21 ,  H03M1/18 ,  H04B17/24 ,  H03M1/12

CPC classification number: H03M1/50 ,  H03M1/12 ,  H03M1/1215 ,  H03M1/185 ,  H04B17/21 ,  H04B17/24

Abstract: Method and systems are provided for controlling adjustments of reception functions. Communication links may be setup between a transmitter and a receiver along with sideband control channels. Conditions and/or parameters, affecting estimated performance of reception, via the communication links, at the receiver, may then be monitored at the transmit-side, and information relating to the monitored conditions may then be communicated, via the sideband control channels, to enable adjusting reception related functions at the receiver. The reception related functions comprise analog-to-digital conversion, which may be configured to function in an interleaved manner

Abstract translation: 提供了方法和系统来控制接收功能的调整。 可以在发射机和接收机之间建立通信链路以及边带控制信道。 然后可以在发送侧监视在接收机处通过通信链路影响接收的估计性能的条件和/或参数，然后可以经由边带控制信道将与所监视条件有关的信息传送到 启用接收机调整接收相关功能。 接收相关功能包括模数转换，其可被配置为以交错方式工作

公开(公告)号：US20160128136A1

公开(公告)日：2016-05-05

申请号：US14929465

申请日：2015-11-02

Applicant: MaxLinear, Inc.

Inventor： Anand Anandakumar ,  Sheng Ye ,  Stephane Laurent-Michel ,  Glenn Chang ,  Raja Pullela ,  Vamsi Paidi

IPC: H04W88/08

CPC classification number: H04L27/0014 ,  H04L2027/0067

Abstract: A system comprises a microwave backhaul outdoor unit having a first resonant circuit, phase error determination circuitry, and phase error compensation circuitry. The first resonant circuit is operable to generate a first signal characterized by a first amount of phase noise and a first amount of temperature stability. The phase error determination circuitry is operable to generate a phase error signal indicative of phase error between the first signal and a second signal, wherein the second signal is characterized by a second amount of phase noise that is greater than the first amount of phase noise, and the second signal is characterized by a second amount of temperature instability that is less than the first amount of temperature instability. The phase error compensation circuitry is operable to adjust the phase of a data signal based on the phase error signal, the adjustment resulting in a phase compensated signal.

Abstract translation: 一种系统包括具有第一谐振电路，相位误差确定电路和相位误差补偿电路的微波回程室外单元。 第一谐振电路可操作以产生第一信号，其特征在于第一量相位噪声和第一量度的温度稳定性。 相位误差确定电路可操作以产生指示第一信号和第二信号之间的相位误差的相位误差信号，其中第二信号的特征在于大于第一相位噪声量的第二相位噪声量， 并且第二信号的特征在于小于第一温度不稳定性的第二量的温度不稳定性。 相位误差补偿电路可操作以基于相位误差信号调整数据信号的相位，导致相位补偿信号的调整。

公开(公告)号：US09294117B2

公开(公告)日：2016-03-22

申请号：US13939595

申请日：2013-07-11

Applicant: MaxLinear, Inc.

Inventor： Raja Pullela ,  Curtis Ling

IPC: H03M1/06 ,  H03M1/50 ,  H03M1/12 ,  H03M1/18

CPC classification number: H03M1/50 ,  H03M1/12 ,  H03M1/1215 ,  H03M1/185 ,  H04B17/21 ,  H04B17/24

Abstract: A system for processing signals may be configured to apply digital conversion to analog signals, and to apply, prior to the analog-to-digital conversion, a gain to at least a portion of the analog signals. The gain may be controlled and/or adjusted based on processing of digital output generated based on the analog-to-digital conversion. The system may comprise a plurality of sampling slices, which may be configured to provide the analog-to-digital conversion in interleaved (e.g., time-interleaved) manner. Each of the sampling slices may comprise a dedicated gain element, for applying gain to signals handled by the corresponding slice. The gain applied by the gain elements of the sampling slices may be controlled, independently, collectively, and/or in based on grouping into subsets. The gain may be controlled based on application of a particular gain control algorithm, which may be selected from a plurality of predefined algorithms.

Abstract translation: 用于处理信号的系统可以被配置为将数字转换应用于模拟信号，并且在模数转换之前将增益应用于至少一部分模拟信号。 可以基于基于模数转换产生的数字输出的处理来控制和/或调整增益。 该系统可以包括多个采样片，其可以被配置为以交织（例如，时间交织）的方式提供模数转换。 每个采样片可以包括专用增益元件，用于对由对应的片处理的信号施加增益。 由采样片的增益元件施加的增益可以独立地，集体地和/或基于对子集的分组进行控制。 可以基于可以从多个预定义算法中选择的特定增益控制算法的应用来控制增益。

公开(公告)号：US09246719B2

公开(公告)日：2016-01-26

申请号：US14319992

申请日：2014-06-30

Applicant: MaxLinear, Inc.

Inventor： Raja Pullela ,  Yu Su ,  Wenjian Chen

IPC: H04L25/06 ,  H04L25/10 ,  H04L25/08 ,  H03D7/16 ,  H04B1/30

CPC classification number: H04L25/08 ,  H03D7/165 ,  H04B1/30

Abstract: A circuit for down-converting an RF signal to a baseband signal includes a trans-admittance amplifier adapted to receive the RF signal and generate in response a pair of differential current signals. The circuit further includes a trans-impedance amplifier having at least four mixers and at least four linear amplifiers. The four mixers frequency down-convert the pair of differential current signals to generate four pairs of differential baseband current signals, wherein each pair of the differential baseband current signals has a different phase and is associated with each of the linear amplifiers. Additionally, the circuit includes a summing block that generates an in-phase signal using a first weighted sum of the four different baseband current signals and a quadrature signal using a second weighted sum of the four different baseband current signals. The circuit further includes an analog-to-digital converter for converting the in-phase and quadrature signals to respective digital representations.

Abstract translation: 用于将RF信号下变频为基带信号的电路包括适合于接收RF信号并且响应于一对差分电流信号而产生的反导纳放大器。 电路还包括具有至少四个混频器和至少四个线性放大器的跨阻抗放大器。 四个混频器对一对差分电流信号进行下变频以产生四对差分基带电流信号，其中每对差分基带电流信号具有不同的相位并且与每个线性放大器相关联。 此外，该电路包括一个求和块，其使用四个不同基带电流信号的第一加权和产生同相信号，并使用四个不同基带电流信号的第二加权和产生正交信号。 电路还包括用于将同相和正交信号转换为相应数字表示的模数转换器。

公开(公告)号：US20150087226A1

公开(公告)日：2015-03-26

申请号：US14492143

申请日：2014-09-22

Applicant: MaxLinear, Inc.

Inventor： Curtis Ling ,  Kishore Seendripu ,  Raja Pullela ,  Madhukar Reddy ,  Timothy Gallagher

IPC: H04H60/19

CPC classification number: H04B1/745 ,  H04B1/0067 ,  H04B1/40 ,  H04H60/19 ,  H04L25/02 ,  H04L27/20 ,  H04L27/2003 ,  H04L27/22 ,  H04L27/36 ,  H04L27/362 ,  H04L27/38

Abstract: A monolithic integrated circuit for use in a microwave backhaul system may comprise a plurality of microwave transceivers and outdoor-unit to indoor-unit (ODU/IDU) interface circuitry. The monolithic integrated circuit may be configurable into an all-outdoor configuration in which the ODU/IDU interface circuitry is disabled. The monolithic integrated circuit may be configurable into a split-indoor-and-outdoor configuration in which the ODU/IDU interface circuitry is enabled to communicate signals between an outdoor unit of the microwave backhaul system and an indoor unit of the microwave backhaul system. While the monolithic integrated circuit is configured in the split-indoor-and-outdoor configuration, the ODU/IDU interface circuitry may be configurable to operate in at least a non-stacking mode and a stacking mode.

Abstract translation: 用于微波回程系统的单片集成电路可以包括多个微波收发器和室外单元到室内单元（ODU / IDU）接口电路。 单片集成电路可以被配置成全室外配置，其中ODU / IDU接口电路被禁用。 单片集成电路可以被配置为分离室内和室外配置，其中ODU / IDU接口电路能够在微波回程系统的室外单元和微波回程系统的室内单元之间通信信号。 虽然单片集成电路配置在分离室内和室外配置中，但是ODU / IDU接口电路可以被配置为以至少非堆叠模式和堆叠模式操作。

公开(公告)号：US20130268979A1

公开(公告)日：2013-10-10

申请号：US13857778

申请日：2013-04-05

Applicant: MAXLINEAR, INC.

Inventor： Raja Pullela ,  Glenn Chang

IPC: H04N21/442

Abstract: An electronic device may be operable to sample a signal during an analog-to-digital conversion using an analog-to-digital converter in the electronic device, and the signal may comprise a wide bandwidth and a plurality of channels. The electronic device may adaptively change a sample rate of the sampling to move aliasing out of a region of one or more desired channels of the plurality of channels. The electronic device may change the sample rate using a variable oscillator in the electronic device. The change of the sample rate may comprise, for example, increasing or decreasing the sample rate by a particular percentage. In response to the change of the sample rate, the electronic device may perform, using a variable rate interpolator in the electronic device, variable rate interpolation. The variable rate interpolator may comprise, for example, a finite impulse response filter.

Abstract translation: 电子设备可以可操作以在使用电子设备中的模数转换器的模数转换期间采样信号，并且该信号可以包括宽带宽和多个信道。 电子设备可以自适应地改变采样的采样率，以便将多个信道中的一个或多个期望信道的区域中的混叠移动。 电子设备可以使用电子设备中的可变振荡器来改变采样率。 样品速率的变化可以包括例如将采样速率提高或降低特定百分比。 响应于采样率的变化，电子设备可以使用电子设备中的可变速率内插器来执行可变速率插值。 可变速率内插器可以包括例如有限脉冲响应滤波器。