公开(公告)号：US20190074806A1

公开(公告)日：2019-03-07

申请号：US15921843

申请日：2018-03-15

Applicant: Qorvo US, Inc.

Inventor： Baker Scott ,  David Reed ,  Christopher T. Brown ,  Dirk Robert Walter Leipold ,  George Maxim

IPC: H03G3/20 ,  H03G3/00 ,  H04L1/24 ,  H03F1/30

CPC classification number: H03G3/20 ,  H03F1/0266 ,  H03F1/30 ,  H03F1/3241 ,  H03F3/195 ,  H03F3/245 ,  H03F2200/411 ,  H03F2200/447 ,  H03G3/004 ,  H03G3/3042 ,  H03G2201/708 ,  H04L1/24

Abstract: Dynamic error vector magnitude (EVM) compensation is accomplished for radio frequency (RF) power amplifiers (PAs) which experience EVM distortion from thermal settling. Thermal settling causes gain changes in the PAs, and systems, apparatuses, and methods of the present disclosure compensate for known thermal transients of PAs.

公开(公告)号：US20180191321A1

公开(公告)日：2018-07-05

申请号：US15394931

申请日：2016-12-30

Applicant: TEXAS INSTRUMENTS INCORPORATED

Inventor： Amit RANE ,  Dongwei CHEN

IPC: H03G1/00 ,  H03F3/45 ,  H03G3/30

CPC classification number: H03G1/007 ,  H03F1/3211 ,  H03F3/45071 ,  H03F3/45098 ,  H03F3/45479 ,  H03F2203/45488 ,  H03G3/3089 ,  H03G2201/708

Abstract: An equalizer, in at least some embodiments, comprises an amplifier configured to produce an amplified voltage signal that is a function of an ambient temperature affecting the equalizer. The equalizer also includes a linear equalizer stage coupled to the amplifier and comprising a transistor having a resistance controlled by the amplified voltage signal. The linear equalizer stage is configured to produce a voltage output signal having a gain that is dependent on the transistor resistance and on a frequency of the amplified voltage signal.

公开(公告)号：US07893684B2

公开(公告)日：2011-02-22

申请号：US12848937

申请日：2010-08-02

Applicant: Bun Kobayashi ,  Liyang Zhang ,  Mau-Chung Frank Chang ,  Pei-Ming Daniel Chow

Inventor： Bun Kobayashi ,  Liyang Zhang ,  Mau-Chung Frank Chang ,  Pei-Ming Daniel Chow

IPC: G01R5/22

CPC classification number: G01R21/12 ,  H03G3/3042 ,  H03G2201/708

Abstract: An amplifier circuit comprises a detection power input circuit for receiving an RF signal, and a bias circuit that includes an output for generating a bias signal in response to a reference control voltage. The power detector further comprises a detection circuit for generating a power control voltage having a voltage characteristic that offsets temperature characteristics of the received RF signal. The amplifier circuit further comprises a power amplifier coupled to the bias circuit. The power amplifier includes a driver stage providing the RF signal. The detection circuit compensates temperature variation of the inputted detection voltage of the received RF signal.

Abstract translation: 放大器电路包括用于接收RF信号的检测功率输入电路和包括用于响应于参考控制电压产生偏置信号的输出的偏置电路。 功率检测器还包括用于产生具有抵消接收的RF信号的温度特性的电压特性的功率控制电压的检测电路。 放大器电路还包括耦合到偏置电路的功率放大器。 功率放大器包括提供RF信号的驱动级。 检测电路补偿接收到的RF信号的输入检测电压的温度变化。

公开(公告)号：US07496375B2

公开(公告)日：2009-02-24

申请号：US10589076

申请日：2005-02-08

Applicant: Hidenori Matsumoto

Inventor： Hidenori Matsumoto

IPC: H04B7/00 ,  H04B1/04

CPC classification number: H03G1/0088 ,  H03G3/3042 ,  H03G2201/103 ,  H03G2201/506 ,  H03G2201/702 ,  H03G2201/708 ,  H04B2001/0416

Abstract: A transmission power control apparatus which reduces the number of steps required for adjustments of the transmission power control apparatus and performs transmission power control with high accuracy in a wide dynamic range. The apparatus has a first variable amplifying circuit (122) with the resolution of 1 dB and a second variable amplifying circuit (123) with the resolution of 0.1 dB, where a correction value calculating section (106) calculates a correction value to compensate for deterioration in the accuracy of transmission power caused by a change in environment due to frequency characteristics and temperature characteristics and another correction value to compensate for error in transmission power, a transmission power calculating section (107) calculates transmission power obtained by correcting with the correction value specified transmission power to output to a communicating party based on the received signal, and a first set value calculating section (108) and a second set value calculating section (109) calculate gain values to set on the first variable amplifying circuit (122) and second variable amplifying circuit (123) based on the corrected transmission power, respectively.

Abstract translation: 一种发送功率控制装置，其减少了调整发送功率控制装置所需的步骤数量，并且在宽动态范围内以高精度执行发送功率控制。 该装置具有分辨率为1dB的第一可变放大电路（122）和分辨率为0.1dB的第二可变放大电路（123），其中校正值计算部分（106）计算校正值以补偿劣化 在由于频率特性和温度特性引起的由环境变化引起的发送功率的精度以及用于补偿发送功率误差的另一校正值的情况下，发送功率计算部（107）计算通过指定的校正值进行校正而获得的发送功率 发送功率，根据接收到的信号输出到通信对方，第一设定值计算部（108）和第二设定值计算部（109）计算设定在第1可变放大电路（122）和第2可变放大电路 可变放大电路（123）分别基于校正后的发射功率。

公开(公告)号：US07439807B2

公开(公告)日：2008-10-21

申请号：US11471408

申请日：2006-06-20

Applicant: Christopher Yong

Inventor： Christopher Yong

IPC: H03F3/04 ,  H03G3/10

CPC classification number: H03G3/3036 ,  H03G2201/708

Abstract: A method for generating a temperature-compensated control signal is provided. The method includes receiving a constant control signal. A temperature-compensated control signal is generated based on the constant control signal. The temperature-compensated control signal is provided to a variable gain amplifier. The temperature-compensated control signal is operable to cause the variable gain amplifier to function independently of temperature.

Abstract translation: 提供了一种用于产生温度补偿控制信号的方法。 该方法包括接收恒定的控制信号。 基于恒定控制信号产生温度补偿控制信号。 温度补偿控制信号被提供给可变增益放大器。 温度补偿控制信号可操作以使可变增益放大器独立于温度起作用。

公开(公告)号：US20070290760A1

公开(公告)日：2007-12-20

申请号：US11471408

申请日：2006-06-20

Applicant: Christopher Yong

Inventor： Christopher Yong

IPC: H03G3/30

CPC classification number: H03G3/3036 ,  H03G2201/708

Abstract: A method for generating a temperature-compensated control signal is provided. The method includes receiving a constant control signal. A temperature-compensated control signal is generated based on the constant control signal. The temperature-compensated control signal is provided to a variable gain amplifier. The temperature-compensated control signal is operable to cause the variable gain amplifier to function independently of temperature.

Abstract translation: 提供了一种用于产生温度补偿控制信号的方法。 该方法包括接收恒定的控制信号。 基于恒定控制信号产生温度补偿控制信号。 温度补偿控制信号被提供给可变增益放大器。 温度补偿控制信号可操作以使可变增益放大器独立于温度起作用。

公开(公告)号：US07256653B2

公开(公告)日：2007-08-14

申请号：US11076525

申请日：2005-03-10

Applicant: Oki Maya ,  Kazuki Tateoka

Inventor： Oki Maya ,  Kazuki Tateoka

IPC: H03F3/04

CPC classification number: H04L27/361 ,  H03F1/0222 ,  H03F1/30 ,  H03F1/302 ,  H03F2200/504 ,  H03G3/004 ,  H03G2201/708

Abstract: A temperature compensation circuit 145 included in a collector voltage generation section 130a applies an offset voltage Vofs(T) to a power control signal Vctrl according to a device temperature. The resulting temperature compensation circuit output voltage Vctrl′ (T) is applied to a collector terminal of a bipolar transistor 110 through a voltage regulator 140 and a choke inductor 170.

Abstract translation: 包含在集电极电压产生部分130a中的温度补偿电路145a根据器件温度将偏移电压Vofs（T）施加到功率控制信号Vctrl。 所得到的温度补偿电路输出电压Vctr1'（T）通过电压调节器140和扼流电感器170施加到双极晶体管110的集电极端子。

公开(公告)号：US20050208909A1

公开(公告)日：2005-09-22

申请号：US11076525

申请日：2005-03-10

Applicant: Oki Maya ,  Kazuki Tateoka

Inventor： Oki Maya ,  Kazuki Tateoka

IPC: G11C27/02 ,  H03F1/30 ,  H03F3/20 ,  H03F3/21 ,  H03G3/00 ,  H03G3/20 ,  H03G3/30 ,  H03K5/00 ,  H03K17/00 ,  H04B1/00 ,  H04B1/04

CPC classification number: H04L27/361 ,  H03F1/0222 ,  H03F1/30 ,  H03F1/302 ,  H03F2200/504 ,  H03G3/004 ,  H03G2201/708

Abstract: A temperature compensation circuit 145 included in a collector voltage generation section 130a applies an offset voltage Vofs(T) to a power control signal Vctrl according to a device temperature. The resulting temperature compensation circuit output voltage Vctrl′ (T) is applied to a collector terminal of a bipolar transistor 110 through a voltage regulator 140 and a choke inductor 170.

Abstract translation: 包含在集电极电压产生部分130a中的温度补偿电路145a根据器件温度将偏移电压Vofs（T）施加到功率控制信号Vctrl。 所得到的温度补偿电路输出电压Vctr1'（T）通过电压调节器140和扼流电感器170施加到双极晶体管110的集电极端子。

公开(公告)号：US20050206447A1

公开(公告)日：2005-09-22

申请号：US10803771

申请日：2004-03-18

Applicant: Ryo Yamazaki ,  William Noellert

Inventor： Ryo Yamazaki ,  William Noellert

IPC: H03G3/00 ,  H03G3/20 ,  H03G3/30

CPC classification number: H03F1/52 ,  H03G3/004 ,  H03G3/3047 ,  H03G2201/103 ,  H03G2201/206 ,  H03G2201/208 ,  H03G2201/307 ,  H03G2201/708

Abstract: When a power amplifier control loop operates near or in saturation, the quality of the output signal can be degraded and an over current condition can occur. To prevent this, the output signal of the power amplifier is detected, converted to digital, and then converted into the frequency spectrum by means of a Fast Fourier Transform. The spectral characteristics of the output signal are analyzed to determine if the power amplifier control loop is approaching or operating in saturation mode. This determination is made by looking at the power of the output signal at various frequencies. If the output at these frequencies exceeds a threshold value, the power amplifier control loop is approaching saturation. In this situation, the output of the power amplifier can be adjusted to prevent loop saturation. This can be accomplished by reducing the supply voltage to the power amplifier or adjusting the bias voltage.

Abstract translation: 当功率放大器控制回路在接近或饱和状态下工作时，输出信号的质量可能会下降，可能会出现过电流状态。 为了防止这种情况，功率放大器的输出信号被检测，转换为数字，然后通过快速傅里叶变换转换成频谱。 分析输出信号的频谱特性，以确定功率放大器控制环路是否接近或在饱和模式下工作。 通过查看各种频率的输出信号的功率来进行该确定。 如果这些频率的输出超过阈值，则功率放大器控制回路接近饱和。 在这种情况下，可以调节功率放大器的输出，以防止环路饱和。 这可以通过降低功率放大器的电源电压或调整偏置电压来实现。

公开(公告)号：US06868279B2

公开(公告)日：2005-03-15

申请号：US10169141

申请日：2000-12-29

Applicant: Karl Gösta Sahlman ,  Hans Eriksson

Inventor： Karl Gösta Sahlman ,  Hans Eriksson

IPC: H03G3/00 ,  H03G3/30 ,  H04B7/00

CPC classification number: H03G3/001 ,  H03G3/3047 ,  H03G2201/708 ,  H04W52/50 ,  H04W52/52

Abstract: The present invention relates to radio transmission of bursts in for example a TDMA cellular radio system. The burst starts with a ramping up period, ends with a corresponding ramping down ramping down period and with the pay-load information therebetween. The ramp form is created in a ramp generator (13) which gives a multiplication value to multiply the digital information to be transmitted in multipliers (15, 16). The multiplied values are converted into analogue form and amplified before being transferred to the antenna (21). Output power and temperature of the transmitting equipment are measured (22, 23) and used to update the output power levels during the next burst.

Abstract translation: 本发明涉及例如TDMA蜂窝无线电系统中的脉冲串的无线电传输。 突发从加速期开始，以相应的斜坡下降周期结束，并且其间的付费信息。 在斜坡发生器（13）中创建斜坡形式，斜坡发生器（13）给出乘法值乘以要在乘法器（15,16）中发送的数字信息。 相乘的值被转换成模拟形式，并在被传送到天线（21）之前被放大。 测量发射设备的输出功率和温度（22,23），并用于在下一个脉冲串期间更新输出功率电平。