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21.发明授权公开(公告)号：US09887719B2
公开(公告)日：2018-02-06
申请号：US15483064
申请日：2017-04-10
Applicant: Maxlinear, Inc.
Inventor： Raja Pullela , Wenjian Chen , Vamsi Paidi
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.
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22.发明申请公开(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
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.
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23.发明申请Method And System For a Distributed Transmission Line Multiplexer For A Multi-Core Multi-Mode Voltage-Controlled Oscillator (VCO) 有权用于多核多模式压控振荡器（VCO）的分布式传输线多路复用器的方法和系统公开(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
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。
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24.发明授权公开(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
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。
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