公开(公告)号：US09485084B2

公开(公告)日：2016-11-01

申请号：US14300127

申请日：2014-06-09

Applicant: Qualcomm Incorporated

Inventor： Li Sun ,  Zhi Zhu ,  Xiaohua Kong ,  Kenneth Luis Arcudia ,  Zhiqin Chen

IPC: H04L7/033 ,  H03L7/099 ,  H03K5/135 ,  H03K5/00

CPC classification number: H04L7/0331 ,  H03K5/135 ,  H03K2005/00065 ,  H03L7/099

Abstract: A phase interpolator, including: a first portion including a first plurality of branches and a plurality of tail current sources, each branch including a differential pair of transistors, source terminals of the differential pair of transistors connect to form a source node, wherein each tail current source couples to one of the source nodes, and wherein the differential pair of transistors and the corresponding tail current source are configured in a current coding scheme; a second portion including a second plurality of branches and a fixed current source coupled to the second plurality of branches, each branch of the second plurality of branches including a second plurality of differential pairs of transistors and a plurality of switches configured in a size coding scheme; wherein the first portion and the second portion are coupled to each other and to a pair of load resistors.

Abstract translation: 一种相位插值器，包括：包括第一多个分支和多个尾电流源的第一部分，每个分支包括差分对晶体管，所述差分对晶体管的源极端子连接以形成源节点，其中每个尾部 电流源耦合到源节点之一，并且其中所述差分对晶体管和相应的尾电流源以当前编码方案配置; 第二部分包括第二多个分支和耦合到第二多个分支的固定电流源，第二多个分支的每个分支包括第二多个差分对晶体管和多个开关，其以尺寸编码方案 ; 其中所述第一部分和所述第二部分彼此耦合并耦合到一对负载电阻器。

公开(公告)号：US09438188B2

公开(公告)日：2016-09-06

申请号：US14486885

申请日：2014-09-15

Applicant: QUALCOMM Incorporated

Inventor： Miao Li ,  Li Sun ,  Zhi Zhu

IPC: H04L25/06 ,  H03F3/45 ,  H03F3/183 ,  H04B1/16 ,  H04L25/02

CPC classification number: H03F3/45071 ,  H03F3/183 ,  H03F3/45179 ,  H03F3/45677 ,  H03F3/45713 ,  H03F2200/129 ,  H03F2200/255 ,  H03F2200/36 ,  H03F2200/453 ,  H03F2203/45008 ,  H03F2203/45078 ,  H03F2203/45112 ,  H03F2203/45302 ,  H03F2203/45306 ,  H03F2203/45418 ,  H03F2203/45422 ,  H03F2203/45424 ,  H04B1/16 ,  H04L25/0272

Abstract: In one embodiment, a receiver comprises a differential common-gate amplifier having a differential input and a differential output, wherein the differential input comprises a first input and a second input, and the differential common-gate amplifier is configured to amplify an input differential signal at the differential input into an amplified differential signal at the differential output. The receiver also comprises a common-mode voltage sensor configured to sense a common-mode voltage of the input differential signal, a replica circuit configured to generate a replica voltage that tracks a direct current (DC) voltage at at least one of the first and second inputs, and a comparator configured to compare the sensed common-mode voltage with the replica voltage, and to adjust a first bias voltage input to the differential common-gate amplifier based on the comparison, wherein the DC voltage depends on the first bias voltage.

Abstract translation: 在一个实施例中，接收机包括具有差分输入和差分输出的差分共栅放大器，其中差分输入包括第一输入和第二输入，并且差分共栅放大器被配置为放大输入差分信号 在差分输入处的差分输出处的放大的差分信号。 接收机还包括被配置为感测输入差分信号的共模电压的共模电压传感器，复制电路被配置为产生在第一和第二和第二至少一个处跟踪直流（DC）电压的复制电压 第二输入和比较器，被配置为将感测的共模电压与复制电压进行比较，并且基于比较来调整输入到差分公共栅放大器的第一偏置电压，其中DC电压取决于第一偏置电压 。