公开(公告)号：US20080300027A1

公开(公告)日：2008-12-04

申请号：US11756476

申请日：2007-05-31

Applicant: Weiping Dou ,  James Samuel Bowen ,  Olivier Boireau ,  Avi Kopelman

Inventor： Weiping Dou ,  James Samuel Bowen ,  Olivier Boireau ,  Avi Kopelman

IPC: H04B1/38

CPC classification number: H03G3/3042 ,  H03G3/3047 ,  H03G2201/206

Abstract: Various embodiments are directed to systems and techniques for reducing power consumption in a mobile computing device. In one or more embodiments, a mobile computing device may be arranged to determine a user environment based on detected antenna impedance or detected current. After the user environment is determined, the mobile computing device may confirm that total radiation power (TRP) for the mobile computing device at an initial conducted power level exceeds the minimum TRP threshold required by the network carrier to receive acceptable quality of service (QoS). Based on the excess TRP for the particular user environment, the mobile computing device may determine a reduced conducted power level to be input to an antenna system. Accordingly, significant power savings may be achieved. To save additional power, the mobile computing device may automatically adjust and/or improve antenna impedance matching based on user environment allowing a further reduction in conducted power. Other embodiments are described and claimed.

Abstract translation: 各种实施例涉及用于降低移动计算设备中的功耗的系统和技术。 在一个或多个实施例中，移动计算设备可以被布置为基于检测到的天线阻抗或检测到的电流来确定用户环境。 在确定用户环境之后，移动计算设备可以确认在初始传导​​功率级别的移动计算设备的总辐射功率（TRP）超过网络运营商接收可接受的服务质量（QoS）所需的最小TRP阈值， 。 基于针对特定用户环境的超量TRP，移动计算设备可以确定要输入到天线系统的降低的传导功率电平。 因此，可以实现显着的功率节省。 为了节省额外的功率，移动计算设备可以基于用户环境自动调整和/或改善天线阻抗匹配，从而进一步降低传导功率。 描述和要求保护其他实施例。

公开(公告)号：US07304539B2

公开(公告)日：2007-12-04

申请号：US10960097

申请日：2004-10-08

Applicant: Hirokazu Tsurumaki ,  Hiroyuki Nagai ,  Tomio Furuya ,  Makoto Ishikawa

Inventor： Hirokazu Tsurumaki ,  Hiroyuki Nagai ,  Tomio Furuya ,  Makoto Ishikawa

IPC: H03G3/10

CPC classification number: H03G1/0005 ,  H03F1/301 ,  H03F2200/294 ,  H03F2200/372 ,  H03G2201/103 ,  H03G2201/206 ,  H03G2201/307 ,  H03G2201/40

Abstract: In a high frequency power amplifier circuit that supplies a bias to an amplifying FET by a current mirror method, scattering of a threshold voltage Vth due to the scattering of the channel impurity concentration of the FET, and a shift of a bias point caused by the scattering of the threshold voltage Vth and a channel length modulation coefficient λ due to a short channel effect are corrected automatically. The scattering of a high frequency power amplifying characteristic can be reduced as a result.

Abstract translation: 在通过电流镜法向放大FET提供偏置的高频功率放大器电路中，由于FET的沟道杂质浓度的散射引起的阈值电压Vth的散射和由 自动校正阈值电压Vth的散射和由于短通道效应引起的通道长度调制系数λ。 结果可以降低高频功率放大特性的散射。

公开(公告)号：US07248846B2

公开(公告)日：2007-07-24

申请号：US10765871

申请日：2004-01-29

Applicant: Hiroyuki Kayano ,  Yuta Araki ,  Yuuji Ohtsuka

Inventor： Hiroyuki Kayano ,  Yuta Araki ,  Yuuji Ohtsuka

IPC: H04B1/04 ,  H04B17/00 ,  H04B1/16

CPC classification number: H03G3/3042 ,  H03F1/0211 ,  H03F1/0277 ,  H03F1/3229 ,  H03F3/72 ,  H03G1/0088 ,  H03G2201/103 ,  H03G2201/206 ,  H03G2201/307

Abstract: An amplifier comprises a first amplifier circuit which amplifies a first signal to output an amplified first signal, a circuit which outputs a second signal corresponding to a difference between the first signal and the amplified first signal, a second amplifier circuit which amplifies the second signal to output an amplified second signal, a combine circuit which outputs an amplified signal by combining the amplified second signal with the amplified first signal, and a controller which controls a supply of a power to the first amplifier circuit and the second amplifier circuit and has a first mode to supply the power to the second amplifier circuit without supplying the power to the first amplifier circuit.

Abstract translation: 放大器包括放大第一信号以输出放大的第一信号的第一放大器电路，输出对应于第一信号和放大的第一信号之间的差的第二信号的电路，将第二信号放大到 输出放大的第二信号，组合电路，其通过将放大的第二信号与放大的第一信号组合来输出放大信号，以及控制器，其控制向第一放大器电路和第二放大器电路供电，并具有第一 模式，以向第二放大器电路供电，而不向第一放大器电路供电。

公开(公告)号：US07081791B2

公开(公告)日：2006-07-25

申请号：US10820675

申请日：2004-04-07

Applicant: Lorenzo M. Carpineto ,  Eric Duvivier ,  Stefano Cipriani

Inventor： Lorenzo M. Carpineto ,  Eric Duvivier ,  Stefano Cipriani

IPC: H03G3/20

CPC classification number: H03F1/0272 ,  H03F3/45188 ,  H03F2200/294 ,  H03F2200/372 ,  H03F2203/45048 ,  H03F2203/45396 ,  H03G3/3036 ,  H03G2201/103 ,  H03G2201/206 ,  H03G2201/307

Abstract: A low noise amplifier circuit (10) includes an attenuator (12) for receiving a calibration signal and generating an attenuated calibration signal. A low noise amplifier (14) amplifies the attenuated calibration signal in calibration mode or amplifies a functional signal in functional mode. In calibration mode, a envelope detector/comparator (16) compares the calibration signal with the output of the low noise amplifier and generates a compensation signal indicating a deviation between the two signals. The gain of the low noise amplifier is adjusted responsive to the compensation signal.

Abstract translation: 低噪声放大器电路（10）包括用于接收校准信号并产生衰减的校准信号的衰减器（12）。 低噪声放大器（14）在校准模式下放大衰减的校准信号，或者在功能模式下放大功能信号。 在校准模式中，包络检测器/比较器（16）将校准信号与低噪声放大器的输出进行比较，并产生指示两个信号之间的偏差的补偿信号。 响应补偿信号调整低噪声放大器的增益。

公开(公告)号：US20060066398A1

公开(公告)日：2006-03-30

申请号：US11227109

申请日：2005-09-16

Applicant: Hitoshi Akamine ,  Masahiro Tsuchiya ,  Kyoichi Takahashi ,  Kazuhiro Koshio

Inventor： Hitoshi Akamine ,  Masahiro Tsuchiya ,  Kyoichi Takahashi ,  Kazuhiro Koshio

IPC: H03G3/20

CPC classification number: H03F3/191 ,  H03F1/30 ,  H03F1/32 ,  H03G1/007 ,  H03G3/004 ,  H03G3/3047 ,  H03G2201/103 ,  H03G2201/206 ,  H03G2201/307 ,  H03G2201/40

Abstract: In a high frequency power amplifier circuit in which bias voltages are applied to the transistors for amplification by current mirroring, this invention enables preventing waveform distortion near the peak output power level by allowing sufficient idle currents to flow through the transistors for amplification, while enhancing the power efficiency in a low output power region. The power amplifier includes a detection circuit comprising a transistor for detection which receives the AC component of an input signal to the last-stage transistor for amplification at its control terminal, a current mirror circuit which mirrors current flowing through that transistor, and a current-voltage conversion means which converts current flowing in the slave side of the current mirror circuit into a voltage. In the detection circuit, a voltage from a bias circuit for generating the bias voltages for the transistors for amplification is applied to the control terminal of the transistor for detection and output of the detection circuit is applied to the control terminal of the last-stage transistor for amplification.

Abstract translation: 在通过电流镜像将偏置电压施加到晶体管以进行放大的高频功率放大器电路中，本发明能够通过允许足够的空闲电流流过晶体管进行放大，从而防止峰值输出功率电平附近的波形失真，同时增强 低输出功率区域的功率效率。 功率放大器包括检测电路，该检测电路包括用于检测的晶体管，其将用于在其控制端子处放大的最后级晶体管的输入信号的AC分量接收;反射电流流过该晶体管的电流镜电路， 电压转换装置，其将在电流镜电路的从侧中流动的电流转换成电压。 在检测电路中，用于产生用于放大的晶体管的偏置电压的偏置电路的电压被施加到用于检测的晶体管的控制端，并且检测电路的输出被施加到最后级晶体管的控制端 用于扩增。

公开(公告)号：US20040259511A1

公开(公告)日：2004-12-23

申请号：US10864193

申请日：2004-06-09

Inventor： Der-Zheng Liu ,  Song-Nien Tang ,  Tai-Cheng Liu ,  Kuang-Yu Yen

IPC: H03M001/10

CPC classification number: H03G3/3052 ,  H03G2201/206 ,  H03G2201/302 ,  H03G2201/305 ,  H03G2201/307 ,  H03G2201/502 ,  H03G2201/508 ,  H03M1/185 ,  H04B7/0814

Abstract: The invention provides an automatic gain control and antenna selection method used in a receiver of a radio communication system. The received signal power is estimated by digital signal processing after analog-to-digital conversion in the system, in order to adjust the gain of the front end analog signal until the magnitude of the analog signal is adjusted to an optimum range of the digital signal processing. In addition, the ADC is utilized to estimate the signal power as the basis of the antenna selection.

Abstract translation: 本发明提供一种在无线电通信系统的接收机中使用的自动增益控制和天线选择方法。 接收到的信号功率通过系统中模数转换后的数字信号处理来估计，以便调整前端模拟信号的增益，直到模拟信号的幅度被调整到数字信号的最佳范围 处理。 此外，ADC用于估计信号功率作为天线选择的基础。

公开(公告)号：US20190131949A1

公开(公告)日：2019-05-02

申请号：US16130435

申请日：2018-09-13

Applicant: NXP B.V.

Inventor： Sebastien Robert ,  Fabian Rivière ,  Franck Bisson ,  Christophe Olivier Mertens ,  Samuel Becqué

IPC: H03G3/30 ,  H04B1/18 ,  H04B1/10

CPC classification number: H03G3/3068 ,  H03G2201/204 ,  H03G2201/206 ,  H04B1/109 ,  H04B1/18

Abstract: A receiver includes at least a first amplifier configured to receive a received signal and provide a first amplified signal based thereon, a mixer configured to receive the first amplified signal and provide an intermediate frequency signal based thereon and a second amplifier configured to receive the intermediate frequency signal and provide a second amplified signal based thereon. An automatic gain controller for the receiver is configured to, based on a first overload signal indicative of a first frequency range of the first amplified signal having one or more frequency components exceeding a first maximum signal power threshold and a second overload signal indicative of a second frequency range, narrower than the first, of the second amplified signal having one or more frequency components exceeding a second maximum signal power threshold, provide for control of a respective gain of one or both of the first amplifier and the second amplifier.

公开(公告)号：US20140162581A1

公开(公告)日：2014-06-12

申请号：US13924760

申请日：2013-06-24

Applicant: Starkey Laboratories, Inc.

Inventor： Jeffrey Paul Solum

IPC: H04B1/10

CPC classification number: H04B1/1027 ,  H03G3/3052 ,  H03G2201/202 ,  H03G2201/206 ,  H04B1/109 ,  H04L27/3809

Abstract: One embodiment of the present subject matter includes a method of receiving an input signal. The method, in various embodiments, includes detecting a peak of the input signal and detecting an envelope of the input signal. In various embodiments, the peak and envelope are used to identify out-of-band blocking signals and to adjust gain control. The method also includes comparing the peak to a first threshold Tp and comparing the envelope to a second threshold Te. In the method, if the peak is above the first threshold and the envelope is below the second threshold, then ignoring the input signal. If the envelope is above the second threshold, the method includes applying automatic gain control to decode information encoded in the input signal.

Abstract translation: 本主题的一个实施例包括接收输入信号的方法。 在各种实施例中，该方法包括检测输入信号的峰值并检测输入信号的包络。 在各种实施例中，峰值和包络用于识别带外阻塞信号并调整增益控制。 该方法还包括将峰值与第一阈值Tp进行比较并将包络与第二阈值Te进行比较。 在该方法中，如果峰值高于第一阈值并且包络低于第二阈值，则忽略输入信号。 如果信封高于第二阈值，则该方法包括应用自动增益控制来对输入信号中编码的信息进行解码。

公开(公告)号：US07212795B2

公开(公告)日：2007-05-01

申请号：US10864193

申请日：2004-06-09

Applicant: Der-Zheng Liu ,  Song-Nien Tang ,  Tai-Cheng Liu ,  Kuang-Yu Yen

Inventor： Der-Zheng Liu ,  Song-Nien Tang ,  Tai-Cheng Liu ,  Kuang-Yu Yen

IPC: H04B1/06

CPC classification number: H03G3/3052 ,  H03G2201/206 ,  H03G2201/302 ,  H03G2201/305 ,  H03G2201/307 ,  H03G2201/502 ,  H03G2201/508 ,  H03M1/185 ,  H04B7/0814

Abstract: The invention provides an automatic gain control and antenna selection method used in a receiver of a radio communication system. The received signal power is estimated by digital signal processing after analog-to-digital conversion in the system, in order to adjust the gain of the front end analog signal until the magnitude of the analog signal is adjusted to an optimum range of the digital signal processing. In addition, the ADC is utilized to estimate the signal power as the basis of the antenna selection.

Abstract translation: 本发明提供一种在无线电通信系统的接收机中使用的自动增益控制和天线选择方法。 接收到的信号功率通过系统中模数转换后的数字信号处理来估计，以便调整前端模拟信号的增益，直到模拟信号的幅度被调整到数字信号的最佳范围 处理。 此外，ADC用于估计信号功率作为天线选择的基础。

公开(公告)号：US07103029B1

公开(公告)日：2006-09-05

申请号：US09708116

申请日：2000-11-07

Applicant: Ryoichi Minowa

Inventor： Ryoichi Minowa

IPC: H04B7/216

CPC classification number: H03G3/3042 ,  H03G2201/206 ,  H04L27/364 ,  H04W52/24

Abstract: Disclosed is a transmitter gain stabilization apparatus which uses feedback control to stably control the gain of a radio base-station transmitter in a CDMA mobile communication system. The apparatus includes a reference-power generating unit for generating average power of a baseband signal as reference power, a detector for detecting transmission power, and a gain adjustment unit for adjusting the gain of a radio unit in the base station in such a manner that the detected power will coincide with the reference power.

Abstract translation: 公开了一种发射机增益稳定装置，其使用反馈控制来稳定地控制CDMA移动通信系统中的无线电基站发射机的增益。 该装置包括用于产生基带信号的平均功率作为参考功率的参考功率产生单元，用于检测发射功率的检测器，以及用于调整基站中的无线电单元的增益的增益调整单元， 检测到的功率将与参考功率一致。