公开(公告)号：US10396850B2

公开(公告)日：2019-08-27

申请号：US15904680

申请日：2018-02-26

Applicant: MaxLinear, Inc.

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

IPC: H04B1/74 ,  H04B1/40 ,  H04L25/02 ,  H04L27/20 ,  H04L27/22 ,  H04H60/19 ,  H04B1/00 ,  H04L27/36 ,  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：US10361670B2

公开(公告)日：2019-07-23

申请号：US14720637

申请日：2015-05-22

Applicant: MaxLinear, Inc.

Inventor： Curtis Ling ,  Madhukar Reddy ,  John Wetherell

IPC: H03G3/20 ,  H03G3/30 ,  H04B1/16 ,  H04B17/318

Abstract: An automatic gain control loop disposed in a receiver is adapted to compensate for varying levels of out of band interference sources by adaptively controlling the gain distribution throughout the receive signal path. One or more intermediate received signal strength indicator (RSSI) detectors are used to determine a corresponding intermediate signal level. The output of each RSSI detector is coupled to an associated comparator that compares the intermediate RSSI value against a corresponding threshold. The take over point (TOP) for gain stages is adjusted based in part on the comparator output values. The TOP for each of a plurality of gain stages may be adjusted in discrete steps or continuously.

公开(公告)号：US10313733B2

公开(公告)日：2019-06-04

申请号：US15792318

申请日：2017-10-24

Applicant: Maxlinear, Inc.

Inventor： Madhukar Reddy ,  Curtis Ling ,  Tim Gallagher

IPC: H04B1/16 ,  H04B1/66 ,  H04N5/44 ,  H04H40/90 ,  H04N21/426 ,  H04B1/00 ,  H04N5/50 ,  H04N21/438 ,  H04N21/454 ,  H04N21/61 ,  H04N5/455

Abstract: A wideband receiver system comprises a wideband analog-to-digital converter (ADC) module and a digital frontend (DFE) module. The wideband ADC is configured to concurrently digitize a band of frequencies comprising a plurality of desired channels and a plurality of undesired channels. The DFE module is coupled to the digital in-phase and quadrature signals. The DFE module is configured to select the plurality of desired channels from the digitized band of frequencies, and generate an intermediate frequency (IF) signal comprising the selected plurality of desired channels and having a bandwidth that is less than a bandwidth of the band of frequencies, where the generation comprises frequency shifting of the selected plurality of desired channels. The IF signal may be a digital signal and the DFE is configured to output the IF signal via a serial or parallel interface.

公开(公告)号：US10211936B2

公开(公告)日：2019-02-19

申请号：US15907404

申请日：2018-02-28

Applicant: Maxlinear, Inc.

Inventor： Glenn Chang ,  Raja Pullela ,  Madhukar Reddy ,  Timothy Gallagher ,  Shantha Murthy Prem Swaroop ,  Curtis Ling ,  Vamsi Paidi ,  Wenjian Chen

IPC: H04H40/90 ,  H04N21/61

Abstract: A direct broadcast satellite (DBS) reception assembly may comprise an integrated circuit that is configurable between or among a plurality of configurations based on content requested by client devices served by the DBS reception assembly. In a first configuration, multiple satellite frequency bands may be digitized by the integrated circuit as a single wideband signal. In a second configuration, the satellite frequency bands may be digitized by the integrated circuit as a plurality of separate narrowband signals. The integrated circuit may comprise a plurality of receive paths, each of the receive chains comprising a respective one of a plurality of low noise amplifiers and a plurality of analog-to-digital converters.

公开(公告)号：US10158922B2

公开(公告)日：2018-12-18

申请号：US15651917

申请日：2017-07-17

Applicant: Maxlinear, Inc.

Inventor： Madhukar Reddy ,  Timothy Gallagher

IPC: H04J1/12 ,  H04B7/216 ,  H04L12/28 ,  H03H7/30 ,  H04N21/61 ,  H04N21/4385

Abstract: Aspects of a method and apparatus for band separation for multiband communication systems are provided. One or more circuits for use in a transceiver may comprise a triplexer and a leakage processing module. The triplexer may comprise a first port, a Multimedia Over Coaxial Alliance (MoCA) port, a television upstream port, and a television downstream port. The leakage processing module may comprise a television downstream input port, a cable television downstream output port, a MoCA port, and a cable television upstream port. The leakage processing module may be operable to (1) process a MoCA signal to generate a first compensation signal; (2) process a cable upstream signal to generate a second compensation signal; (3) process a filtered signal based at least in part on the first and second compensation signals; and (4) output the processed filtered signal via the cable television downstream output port of said leakage processing module.

公开(公告)号：US09941927B2

公开(公告)日：2018-04-10

申请号：US15270477

申请日：2016-09-20

Applicant: MaxLinear, Inc.

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

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

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：US20170318351A1

公开(公告)日：2017-11-02

申请号：US15651917

申请日：2017-07-17

Applicant: Maxlinear, Inc.

Inventor： Madhukar Reddy ,  Timothy Gallagher

IPC: H04N21/61 ,  H04L12/28 ,  H04N21/4385

CPC classification number: H04N21/6118 ,  H04L12/2801 ,  H04N21/4385 ,  H04N21/6168

Abstract: Aspects of a method and apparatus for band separation for multiband communication systems are provided. One or more circuits for use in a transceiver may comprise a triplexer and a leakage processing module. The triplexer may comprise a first port, a Multimedia Over Coaxial Alliance (MoCA) port, a television upstream port, and a television downstream port. The leakage processing module may comprise a television downstream input port, a cable television downstream output port, a MoCA port, and a cable television upstream port. The leakage processing module may be operable to (1) process a MoCA signal to generate a first compensation signal; (2) process a cable upstream signal to generate a second compensation signal; (3) process a filtered signal based at least in part on the first and second compensation signals; and (4) output the processed filtered signal via the cable television downstream output port of said leakage processing module.

公开(公告)号：US09209852B2

公开(公告)日：2015-12-08

申请号：US14492891

申请日：2014-09-22

Applicant: MaxLinear, Inc.

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

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

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.

Abstract translation: 微波回程系统可以包括单片集成电路，其包括片上收发器，数字基带处理电路和辅助接口电路。 片上收发器可以处理来自天线元件的微波信号以产生第一对正交基带信号，并将第一对相位正交基带信号传送到数字基带处理电路。 辅助接口电路可以从单片集成电路外部的源接收一个或多个辅助信号，并将一个或多个辅助信号传送到数字基带处理电路。 数字基带处理电路可以用于处理信号以产生一个或多个第二对相位正交数字基带信号。

公开(公告)号：US09059672B2

公开(公告)日：2015-06-16

申请号：US14044817

申请日：2013-10-02

Applicant: MaxLinear, Inc.

Inventor： Curtis Ling ,  Madhukar Reddy ,  John Wetherell

IPC: H04B1/06 ,  H03G3/20 ,  H03G3/30 ,  H04B1/10

CPC classification number: H03G3/20 ,  H03G3/3068 ,  H04B1/16 ,  H04B17/318

Abstract: An automatic gain control loop disposed in a receiver is adapted to compensate for varying levels of out of band interference sources by adaptively controlling the gain distribution throughout the receive signal path. One or more intermediate received signal strength indicator (RSSI) detectors are used to determine a corresponding intermediate signal level. The output of each RSSI detector is coupled to an associated comparator that compares the intermediate RSSI value against a corresponding threshold. The take over point (TOP) for gain stages is adjusted based in part on the comparator output values. The TOP for each of a plurality of gain stages may be adjusted in discrete steps or continuously.

Abstract translation: 设置在接收机中的自动增益控制回路适于通过自适应地控制整个接收信号路径上的增益分布来补偿不同级别的带外干扰源。 一个或多个中间接收信号强度指示器（RSSI）检测器用于确定相应的中间信号电平。 每个RSSI检测器的输出耦合到相关联的比较器，其将中间RSSI值与相应的阈值进行比较。 增益级的接收点（TOP）部分基于比较器输出值进行调整。 可以以离散步骤或连续地调整多个增益级中的每一个的TOP。

公开(公告)号：US20140104499A1

公开(公告)日：2014-04-17

申请号：US13962871

申请日：2013-08-08

Applicant: MAXLINEAR, INC.

Inventor： Madhukar Reddy ,  Curtis Ling ,  Tim Gallagher

IPC: H04N5/50 ,  H04N21/438 ,  H04N21/454 ,  H04N21/426

CPC classification number: H04N21/4263 ,  H04B1/0014 ,  H04N5/455 ,  H04N5/50 ,  H04N21/4382 ,  H04N21/4383 ,  H04N21/454 ,  H04N21/6143 ,  H04N21/6193

Abstract: A wideband receiver system is provided to concurrently receive multiple RF channels including a number of desired channels that are located in non-contiguous portions of a radio frequency spectrum and to group the number of desired channels into a contiguous frequency band. The system includes a wideband receiver having a complex mixer for down-shifting the multiple RF channels and transforming them to an in-phase signal and a quadrature signal in the baseband. The system further includes a wideband analog-to-digital converter module that digitizes the in-phase and quadrature signals and a digital frontend module that transforms the digital in-phase and quadrature signals to baseband signals that contains only the number of desired RF channels that are now located in a contiguous frequency band. An up-converter module up-shifts the baseband signals to a contiguous band in an IF spectrum so that the system can directly interface with commercially available demodulators.

Abstract translation: 提供宽带接收机系统以同时接收多个RF信道，包括位于无线电频谱的非连续部分中的多个期望信道，并将期望信道的数目分组成连续的频带。 该系统包括具有复合混频器的宽带接收机，用于对多个RF信道进行下变频并将其变换成基带中的同相信号和正交信号。 该系统还包括将同相和正交信号数字化的宽带模数转换器模块和将数字同相和正交信号转换成仅包含所需RF频道数量的基带信号的数字前端模块， 现在位于连续的频带。 上变频器模块将基带信号升级到IF频谱中的连续频带，使系统可以直接与市售解调器接口。