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：US20170047891A1

公开(公告)日：2017-02-16

申请号：US15236372

申请日：2016-08-12

Applicant: Maxlinear, Inc.

Inventor： Wenjian Chen ,  Sangeetha Gopalakrishnan ,  Raghava Manas Bachu ,  Vamsi Paidi

IPC: H03B5/12 ,  H03H11/30 ,  H03L7/197

CPC classification number: H03H11/30 ,  H03B1/00 ,  H03B5/00 ,  H03B5/1237 ,  H03B25/00 ,  H03B27/00 ,  H03B2200/0072

Abstract: Methods and systems for a distributed transmission line multiplexer for a multi-core multi-mode voltage-controlled oscillator (VCO) may comprise a plurality of voltage controlled oscillators (VCOs) arranged adjacent to each other, where each of the plurality of VCOs are operable to generate an output signal at a configurable frequency, an impedance matching circuit comprising a respective driver and impedance matching elements coupled to each of the plurality of VCOs, and an output device coupled to the impedance matching circuit. The impedance matching elements may include capacitors and inductors. Between each adjacent pair of the respective drivers coupled to each of the plurality of VCOs, the impedance matching elements may include two inductors coupled in series between the drivers and a capacitor coupled to ground and to a common node between the two inductors. Impedance values of the capacitors and inductors may be configurable. The impedance matching elements may include a resistor coupled to a bias voltage VDD and to a common node with a capacitor that is coupled to ground, where the common node is coupled to one of the inductors. The output device may include a prescaler that is an integer or fractional frequency-N divider, or a buffer. The respective drivers coupled to each of the plurality of VCOs may be configured to provide a constant output power no matter which of said plurality of VCOs is enabled.

Abstract translation: 用于多核多模式压控振荡器（VCO）的分布式传输线路多路复用器的方法和系统可以包括彼此相邻布置的多个压控振荡器（VCO），其中多个VCO中的每一个可操作 以可配置的频率产生输出信号，阻抗匹配电路包括耦合到所述多个VCO中的每一个的相应的驱动器和阻抗匹配元件，以及耦合到所述阻抗匹配电路的输出装置。 阻抗匹配元件可以包括电容器和电感器。 在耦合到多个VCO中的每一个的相应驱动器的每个相邻的驱动器对之间，阻抗匹配元件可以包括串联耦合在驱动器之间的两个电感器和耦合到地的电容器和两个电感器之间的公共节点。 电容器和电感器的阻抗值可以是可配置的。 阻抗匹配元件可以包括耦合到偏置电压VDD的电阻器和耦合到地的电容器的公共节点，其中公共节点耦合到电感器之一。 输出设备可以包括预分频器，其是整数或分数频率N分频器或缓冲器。 耦合到多个VCO中的每一个的相应驱动器可以被配置为提供恒定的输出功率，而不管所述多个VCO中的哪一个被使能。

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。