公开(公告)号：US09252790B2

公开(公告)日：2016-02-02

申请号：US14251331

申请日：2014-04-11

Applicant: QUALCOMM Incorporated

Inventor： Yiwu Tang ,  Jong Min Park ,  Serkan Sayilir ,  Chiewcharn Narathong

IPC: H03L7/099 ,  H03L7/081

CPC classification number: H03L7/099 ,  H03L7/081 ,  H03L7/093

Abstract: Locking multiple VCOs to generate a plurality of LO frequencies, including: receiving a plurality of divided VCO feedback signals from a plurality of VCOs; receiving a reference signal multiplied by a predetermined number of the plurality of VCOs; generating and processing the predetermined number of phase differences between the multiplied reference signal and the plurality of divided VCO feedback signals in a single PLL circuit including a digital loop filter to receive and process the phase differences and generate (produce) a filter output, wherein the digital loop filter includes a plurality of delay cells equal to the predetermined number; and generating and outputting (delayed) control voltages for the plurality of VCOs based on the filter output.

Abstract translation: 锁定多个VCO以产生多个LO频率，包括：从多个VCO接收多个分割的VCO反馈信号; 接收乘以所述多个VCO的预定数量的参考信号; 在包括数字环路滤波器的单个PLL电路中产生和处理倍增参考信号与多个分压VCO反馈信号之间的预定数量的相位差，以接收和处理相位差并产生（产生）滤波器输出，其中， 数字环路滤波器包括等于预定数量的多个延迟单元; 以及基于滤波器输出产生并输出（延迟的）多个VCO的控制电压。

公开(公告)号：US10122332B2

公开(公告)日：2018-11-06

申请号：US15607145

申请日：2017-05-26

Applicant: QUALCOMM Incorporated

Inventor： Serkan Sayilir ,  Chuan Wang ,  Kevin Hsi Huai Wang

IPC: H03F1/00 ,  H03F3/191 ,  H03F3/30 ,  H03F3/26 ,  H03H7/48 ,  H03F3/00 ,  H03F3/72 ,  H04B1/18 ,  H04L27/26

Abstract: A wireless communication device includes a first low-noise amplifier (LNA). The wireless communication device also includes a first LNA load circuit coupled to an output of the LNA. The wireless communication device further includes a power splitter switchably coupled to the first LNA load circuit. The power splitter includes a negatively coupled transformer and is switchably coupled to multiple outputs.

公开(公告)号：US10008987B1

公开(公告)日：2018-06-26

申请号：US15583944

申请日：2017-05-01

Applicant: QUALCOMM Incorporated

Inventor： Serkan Sayilir ,  Chuan Wang ,  Li-chung Chang ,  Kevin Hsi Huai Wang

IPC: H03F1/26 ,  H03F1/56 ,  H03F3/193 ,  H03F3/21

Abstract: A low noise amplifier (LNA) reduces matching and switch noise. The LNA includes a main radio frequency signal path, an auxiliary radio frequency signal path and a phase shifter. The main path includes a first transistor and an inductor. The inductor is positioned between an input port of the LNA and the first transistor. The first transistor receives an input radio frequency signal via the inductor and provides a first amplified signal based on the input radio frequency signal. The auxiliary radio frequency signal path provides a second amplified signal for a noise cancellation mode based on the input radio frequency signal. The phase shifter applies a phase shift to an output signal of the LNA based on the first amplified signal and the second amplified signal.