公开(公告)号：WO2014101881A1

公开(公告)日：2014-07-03

申请号：PCT/CN2013/091063

申请日：2013-12-31

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

Inventor： SUNG, Eric

IPC: H04B1/69

CPC classification number: H03F3/24 ,  G01R21/10 ,  G01R21/12 ,  G01R21/14 ,  H03F1/0272 ,  H03F1/301 ,  H03F1/302 ,  H03F1/342 ,  H03F3/19 ,  H03F2200/105 ,  H03F2200/228 ,  H03F2200/42 ,  H03F2200/447 ,  H03F2200/451 ,  H03F2200/465 ,  H03F2200/471 ,  H03F2200/75 ,  H04B17/318

Abstract: A power detector circuit, comprising a first section configured to receive a radio frequency (RF) input signal and to generate a first voltage, wherein the first voltage comprises a voltage proportional to the sum of a mean-square of the RF input signal and a voltage characteristic of the first section, and wherein the first voltage is an input to a third section, a second section configured to generate a second voltage, wherein the second voltage comprises a combination of an output voltage and a voltage proportional to the voltage characteristic of the first section, wherein the output voltage is proportional to a root-mean-square of the RF input signal, the third section configured to generate the output voltage by combining the first voltage and the second voltage, wherein the second section creates a negative feedback loop for the third section and the output voltage generated by the third section is an output of the power detector circuit.

Abstract translation: 一种功率检测器电路，包括被配置为接收射频（RF）输入信号并产生第一电压的第一部分，其中所述第一电压包括与所述RF输入信号的均方和/ 第一部分的电压特性，并且其中第一电压是到第三部分的输入，第二部分被配置为产生第二电压，其中第二电压包括输出电压和与电压特性成正比的电压的组合 所述第一部分，其中所述输出电压与所述RF输入信号的均方根成比例，所述第三部分被配置为通过组合所述第一电压和所述第二电压来产生所述输出电压，其中所述第二部分产生负反馈 第三部分产生的输出电压是功率检测器电路的输出。

公开(公告)号：WO2014139437A1

公开(公告)日：2014-09-18

申请号：PCT/CN2014/073331

申请日：2014-03-13

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

Inventor： YIN, Ping ,  IRVINE, Robert ,  YIM, Seong-Mo ,  CHI, Yusong ,  LIAO, Chengfang ,  WANG, Feng ,  SUNG, Eric

IPC: H04B1/10

CPC classification number: H04B15/00 ,  H04B1/30 ,  H04B1/38

Abstract: A noise cancellation structure comprises a trans-impedance stage couple to an output of a mixer of a receiver and a noise cancellation stage connected in parallel with the trans-impedance stage, wherein the noise cancellation stage comprises a first adjustable resistor and a second adjustable resistor connected in series with the first adjustable resistor, wherein the first adjustable resistor and the second adjustable resistor are configured such that the first adjustable resistor has a first resistance variation portion and the second adjustable resistor has a second resistance variation portion equal to the first resistance variation in an opposite direction and a magnitude of the first resistance variation is so selected that differential mode second-order noise and common mode second-order noise cancel each other.

Abstract translation: 噪声消除结构包括耦合到接收器的混频器和与跨阻抗级并联连接的噪声消除级的输出的跨阻抗级，其中噪声消除级包括第一可调电阻器和第二可调电阻器 与第一可调电阻器串联连接，其中第一可调电阻器和第二可调电阻器被配置为使得第一可调电阻器具有第一电阻变化部分，并且第二可调电阻器具有等于第一电阻变化的第二电阻变化部分 在相反方向上，并且选择第一电阻变化的大小，使得差模二次噪声和共模二阶噪声相互抵消。