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    High-frequency power amplifier and communication apparatus
    11.
    发明公开
    High-frequency power amplifier and communication apparatus 有权
    HochfrequenzLeistungsverstärkerund Kommunikationseinrichtung

    公开(公告)号：EP1580881A2

    公开(公告)日：2005-09-28

    申请号：EP05005398.2

    申请日：2005-03-11

    Applicant: MATSUSHITA ELECTRIC INDUSTRIAL CO., LTD.

    Inventor： Maya, Oki ,  Tateoka, Kazuki

    IPC: H03G3/30

    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（145）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。

    THERMAL CONTROL OF AUDIO PLAYBACK DEVICES
    12.
    发明公开
    THERMAL CONTROL OF AUDIO PLAYBACK DEVICES 审中-公开

    公开(公告)号：US20240031750A1

    公开(公告)日：2024-01-25

    申请号：US18479606

    申请日：2023-10-02

    Applicant: Sonos, Inc.

    Inventor： Hilmar Lehnert ,  Aurelio Ramos

    IPC: H04R29/00 ,  G01K1/14 ,  G01K3/10 ,  H03G3/30 ,  H04R3/00

    CPC classification number: H04R29/001 ,  G01K1/14 ,  G01K3/10 ,  H03G3/3005 ,  H04R3/007 ,  H03G2201/708

    Abstract: To avoid damage from overheating, playback device operation can be modulated based on input from temperature sensors. An example method includes obtaining, via one or more temperature sensors carried by the playback device, temperature data. Based on the temperature data, a first temperature parameter is detected. In response to detecting the first temperature parameter, a gain of audio playback is decreased by a first amount. After decreasing the gain of audio playback by the first amount, a second temperature parameter is detected. In response to detecting the second temperature parameter, the gain of audio playback is decreased by a second amount different than the first amount.

    INTEGRATED POWER DETECTOR WITH TEMPERATURE COMPENSATION FOR FULLY-CLOSED LOOP CONTROL
    13.
    发明申请
    INTEGRATED POWER DETECTOR WITH TEMPERATURE COMPENSATION FOR FULLY-CLOSED LOOP CONTROL 有权
    集成功率检测器，具有完全闭环控制的温度补偿

    公开(公告)号：US20090302830A1

    公开(公告)日：2009-12-10

    申请号：US12133297

    申请日：2008-06-04

    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: G01R29/08

    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。

    Power characteristic of a radio transmitter
    14.
    发明申请
    Power characteristic of a radio transmitter 有权
    无线电发射机的功率特性

    公开(公告)号：US20030040290A1

    公开(公告)日：2003-02-27

    申请号：US10169141

    申请日：2002-08-19

    Inventor： Karl Gosta Sahlman ,  Hans Eriksson

    IPC: H03C001/62 ,  H04B017/00

    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。

    Thermal control of audio playback devices
    17.
    发明授权
    Thermal control of audio playback devices 有权

    公开(公告)号：US11792589B2

    公开(公告)日：2023-10-17

    申请号：US17938513

    申请日：2022-10-06

    Applicant: Sonos, Inc.

    Inventor： Hilmar Lehnert ,  Aurelio Ramos

    IPC: H04R29/00 ,  G01K1/14 ,  G01K3/10 ,  H03G3/30 ,  H04R3/00

    CPC classification number: H04R29/001 ,  G01K1/14 ,  G01K3/10 ,  H03G3/3005 ,  H04R3/007 ,  H03G2201/708

    Abstract: To avoid damage from overheating, playback device operation can be modulated based on input from temperature sensors. An example method includes obtaining, via one or more temperature sensors carried by the playback device, temperature data. Based on the temperature data, a first temperature parameter is detected. In response to detecting the first temperature parameter, a gain of audio playback is decreased by a first amount. After decreasing the gain of audio playback by the first amount, a second temperature parameter is detected. In response to detecting the second temperature parameter, the gain of audio playback is decreased by a second amount different than the first amount.

    INTEGRATED POWER DETECTOR WITH TEMPERATURE COMPENSATION FOR FULLY-CLOSED LOOP CONTROL
    18.
    发明申请
    INTEGRATED POWER DETECTOR WITH TEMPERATURE COMPENSATION FOR FULLY-CLOSED LOOP CONTROL 有权
    集成功率检测器，具有完全闭环控制的温度补偿

    公开(公告)号：US20110018624A1

    公开(公告)日：2011-01-27

    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: H03F3/14

    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。

    Transmission power control device
    19.
    发明申请
    Transmission power control device 失效
    传动功率控制装置

    公开(公告)号：US20070176681A1

    公开(公告)日：2007-08-02

    申请号：US10589076

    申请日：2005-02-08

    Applicant: Hidenori Matsumoto

    Inventor： Hidenori Matsumoto

    IPC: H03G3/00

    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，基于接收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）基于校正的发射功率， y。

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