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71. 发明申请

US20080165904A1 SYMBOL SCALING WITH AUTOMATIC GAIN CONTROL FOR WIRELESS COMMUNICATION 有权
标题翻译：符号扩展与自动增益控制无线通信
公开(公告)号：US20080165904A1
公开(公告)日：2008-07-10
申请号：US11768164
申请日：2007-06-25
申请人： Jonathan Sidi , Ketan N. Patel
发明人： Jonathan Sidi , Ketan N. Patel
IPC分类号： H04L27/00
CPC分类号： H04L25/067 , H03G1/04 , H03G3/3089 , H04B1/7115 , H04B2201/70706 , H04L27/3809
摘要： Techniques for scaling symbols to account for large abrupt changes in received power at a user equipment (UE) are described. The UE performs AGC on received samples to obtain input samples. The UE processes (e.g., CDMA demodulates) the input samples to obtain first symbols. The UE determines the power of the input samples and derives a symbol gain based on (e.g., inversely related to) the power of the input samples. The UE scales the first symbols with the symbol gain to obtain detected data symbols having approximately constant amplitude, even with large abrupt changes in the power of the input samples. The UE estimates signal amplitude and noise variance based on the detected data symbols, computes LLRs for code bits of the detected data symbols based on the signal amplitude and noise variance, and decodes the LLRs to obtain decoded data.
摘要翻译：描述用于缩放符号以解决用户设备（UE）的接收功率的大的突然变化的技术。 UE对接收到的样本执行AGC以获得输入样本。 UE处理（例如，CDMA解调）输入样本以获得第一符号。 UE基于（例如，与输入样本的功率相反）来确定输入样本的功率并导出符号增益。 UE随着符号增益缩放第一个符号以获得具有近似恒定幅度的检测数据符号，即使输入样本的功率有大的突然变化。 UE基于检测到的数据符号估计信号幅度和噪声方差，基于信号幅度和噪声方差计算检测数据符号的码位的LLR，并解码LLR以获得解码数据。

72. 发明申请

US20070249303A1 Low noise CMOS transmitter circuit with high range of gain 有权
标题翻译：低噪声CMOS发射电路具有高增益范围
公开(公告)号：US20070249303A1
公开(公告)日：2007-10-25
申请号：US11409092
申请日：2006-04-24
申请人： Abdellatif Bellaouar , Michel Frechette
发明人： Abdellatif Bellaouar , Michel Frechette
IPC分类号： H01Q11/12 , H04B1/28
CPC分类号： H03G1/04 , H03F1/26 , H03F3/24 , H03F3/347 , H03F3/45071 , H03F2200/162 , H03F2200/447
摘要： A CMOS automatic gain control (AGC) circuit that receives an analog control voltage and generates a temperature compensated gain voltage to linearly control the gain of a variable gain circuit operating in the sub-threshold region. A PTAT circuit having a resistor network coupled to a current mirror circuit operating in the sub-threshold region establishes a current having an proportional relationship to temperature. This current is used as a supply for a voltage to voltage converter circuit which generates an intermediate voltage in response to the analog control voltage. A linearizing circuit operating in the sub-threshold region pre-conditions the intermediate voltage, which is then applied to a variable gain circuit. The variable gain circuit is operated in the sub-threshold region, and the preconditioned intermediate voltage will control the amount of gain to be substantially linear with respect to the analog control voltage, and with a range of about 85 dB.
摘要翻译：一种CMOS自动增益控制（AGC）电路，其接收模拟控制电压并产生温度补偿增益电压，以线性地控制在子阈值区域中工作的可变增益电路的增益。具有耦合到在次阈值区域中工作的电流镜电路的电阻网络的PTAT电路建立与温度成比例关系的电流。该电流用作电压到电压转换器电路的电源，该电压对电压转换器电路响应于模拟控制电压产生中间电压。在亚阈值区域中操作的线性化电路预先规定中间电压，然后将其施加到可变增益电路。可变增益电路在子阈值区域中工作，并且预处理的中间电压将控制增益量相对于模拟控制电压基本上线性，并且在约85dB的范围内。

73. 发明授权

US07227412B2 Attenuation cell with an attenuation factor control device 有权
标题翻译：具衰减因子控制装置的衰减电池
公开(公告)号：US07227412B2
公开(公告)日：2007-06-05
申请号：US11025848
申请日：2004-12-29
申请人： Jean-Charles Grasset , Frédéric Bossu
发明人： Jean-Charles Grasset , Frédéric Bossu
IPC分类号： H03F3/45
CPC分类号： H03G1/04 , H03G7/06
摘要： Attenuation cell comprising first and second differential pairs of bipolar transistors. A gain control device applies a voltage VA−VB between the bases of both differential pairs and comprises a set of three diodes in which a current IA, a current IB and the sum IA+IB of both preceding currents flow, respectively. The two diodes seeing current IB and IA+IB generate a voltage, respectively VB and VC, and the difference between these two voltages is used to generate a value Iz used in a control loop. A desired value Vct is transformed into information Ix, then into information Iy proportional to absolute temperature T, and an error amplifier uses information Iy−Iz and generates currents IA and IB by minimizing this difference.
摘要翻译：衰减单元包括第一和第二差分双极晶体管对。增益控制装置在两个差分对的基极之间施加电压VA-VB，并且包括一组三个二极管，其中电流IA，电流IB和前两个电流的和IA + IB分别流动。看到电流IB和IA + IB的两个二极管分别产生VB和VC的电压，并且使用这两个电压之间的差来产生在控制回路中使用的值Iz。期望值Vct被转换成信息Ix，然后转换成与绝对温度T成比例的信息Iy，误差放大器使用信息Iy-Iz，并通过最小化该差来产生电流IA和IB。

74. 发明授权

US06963733B2 Method and apparatus for reducing the effect of AGC switching transients 有权
标题翻译：降低AGC切换瞬变影响的方法和装置
公开(公告)号：US06963733B2
公开(公告)日：2005-11-08
申请号：US09984879
申请日：2001-10-31
申请人： Patrik Eriksson , Mats Eriksson
发明人： Patrik Eriksson , Mats Eriksson
IPC分类号： H03G1/00 , H03G1/04 , H03G3/00 , H03G3/30 , H03M1/18 , H04B17/02 , H04B1/06 , H04B7/00
CPC分类号： H03G3/3089 , H03G1/0023 , H03G1/04 , H03G3/001 , H03M1/187
摘要： The present invention reduces automatic gain control (AGC) transients using first and second AGC processing branches to receive a signal. A gain is selectively adjusted (if desired) in the one of the AGC processing branches during a first time period. However, a gain is not adjusted in the other AGC processing branch during that first time period. The signals generated by the first and second AGC processing branches are then diversity processed to generate a received signal. The diversity processing effectively reduces the effect of any AGC transient.
摘要翻译：本发明使用第一和第二AGC处理分支减少自动增益控制（AGC）瞬变以接收信号。在第一时间段期间，AGC处理分支中的一个AGC选择性地调整增益（如果需要）。然而，在该第一时间段期间，其他AGC处理分支中的增益没有被调整。然后对由第一和第二AGC处理分支产生的信号进行分集处理以产生接收信号。分集处理有效地降低了任何AGC瞬变的影响。

75. 发明授权

US06956432B2 Transmission output correcting apparatus 失效
标题翻译：传输输出校正装置
公开(公告)号：US06956432B2
公开(公告)日：2005-10-18
申请号：US10152709
申请日：2002-05-22
申请人： Eisuke Kobayashi , Kazuhide Yamada , Seiichi Yamaguchi
发明人： Eisuke Kobayashi , Kazuhide Yamada , Seiichi Yamaguchi
IPC分类号： H04B1/04 , H03G1/04 , H03G3/30 , H01Q11/12 , H04B1/06
CPC分类号： H03G1/04 , H03G3/3036 , H04B2001/0416
摘要： A first control unit reads out both specific frequencies and gain data corresponding to these specific frequencies, which have been stored into a first storage unit, and approximates gain data corresponding to an arbitrary frequency by way of a linear function to calculate the gain data by executing a formula. A D/A converter converts this gain data into a gain control signal, and supplies the gain control signal to a variable gain amplifier. The variable gain amplifier amplifies a transmission signal by a gain defined in response to a transmission frequency based upon the gain control signal.
摘要翻译：第一控制单元读出已经存储到第一存储单元中的与这些特定频率相对应的特定频率和增益数据，并且通过线性函数近似对应于任意频率的增益数据，以通过执行一个公式 D / A转换器将该增益数据转换成增益控制信号，并将增益控制信号提供给可变增益放大器。可变增益放大器通过基于增益控制信号响应于发送频率限定的增益来放大发送信号。

76. 发明授权

US06906592B2 Continuously variable gain radio frequency driver amplifier having linear in decibel gain control characteristics 有权
标题翻译：具有线性分贝增益控制特性的连续可变增益射频驱动放大器
公开(公告)号：US06906592B2
公开(公告)日：2005-06-14
申请号：US10700860
申请日：2003-11-03
申请人： Kenneth Barnett , Brett C. Walker , Kevin Gard
发明人： Kenneth Barnett , Brett C. Walker , Kevin Gard
IPC分类号： H03F1/30 , H03G1/04 , H03G3/30 , H03G7/00 , H03G7/06 , H04B5/00 , H03G3/20
CPC分类号： H04B5/00 , H03F1/301 , H03G1/04 , H03G3/3036 , H03G3/3042 , H03G7/001
摘要： A radio frequency (RF) driver amplifier system and method that provides linear in decibel gain control is provided. The RF driver amplifier system comprises a linear transconductor receiving an input voltage and providing a controlled current based on input voltage received, temperature compensation circuitry for varying current from the linear transconductor according to absolute temperature, an exponential current controller receiving current varied according to temperature and providing an exponential current in response, and an inductive degeneration compensator receiving exponential current and providing a control current to driver amplifier circuitry, thereby compensating for inductive degeneration due to at least one inductor in the driver amplifier circuitry. Control current passes from the inductive degeneration compensator to the driver amplifier circuitry. Output gain from the driver amplifier circuitry varies linearly in decibels with respect to the input voltage.
摘要翻译：提供了提供线性分贝增益控制的射频（RF）驱动放大器系统和方法。 RF驱动放大器系统包括接收输入电压并基于接收的输入电压提供受控电流的线性跨导器，用于根据绝对温度改变来自线性跨导器的电流的温度补偿电路，接收根据温度变化的电流的指数电流控制器，以及提供响应的指数电流，以及感应退化补偿器，其接收指数电流并向驱动器放大器电路提供控制电流，由此补偿由于驱动器放大器电路中的至少一个电感器引起的电感退化。控制电流从感应退化补偿器传递到驱动器放大器电路。驱动放大器电路的输出增益相对于输入电压以分贝线性变化。

77. 发明授权

US06724259B2 Variable gain amplifier 失效
标题翻译：可变增益放大器
公开(公告)号：US06724259B2
公开(公告)日：2004-04-20
申请号：US10144728
申请日：2002-05-15
申请人： Mitsuru Tanabe
发明人： Mitsuru Tanabe
IPC分类号： H03G330
CPC分类号： H03F1/22 , H03F3/72 , H03G1/04
摘要： It is an object of the present invention to provide a variable gain amplifier of which impedance does not change when gains are switched. A transistor is turned on in a high-gain state and transistors are turned on in a low-gain state to switch between the gains, the area of the transistor is made equal to the area of the transistor to keep the same output load conditions and the same output impedance both in the high-gain state and the low-gain state. While the input impedance of a transistor becomes high because the transistor in a high-gain path is turned off in the low-gain mode, current passes through a transistor to lower the impedance of the collector of a transistor and, as a result, the input impedance is kept the same both in the high-gain state and the low-gain state.
摘要翻译：本发明的目的是提供一种可变增益放大器，当增益被切换时阻抗不变。晶体管以高增益状态导通，晶体管以低增益状态导通，以在增益之间切换，使晶体管的面积等于晶体管的面积以保持相同的输出负载条件，并且在高增益状态和低增益状态下均具有相同的输出阻抗。虽然由于高增益路径中的晶体管在低增益模式下被切断，晶体管的输入阻抗变高，但是电流通过晶体管以降低晶体管的集电极的阻抗，结果是在高增益状态和低增益状态下，输入阻抗保持相同。

78. 发明申请

US20030083031A1 Method and apparatus for reducing the effect of AGC switching transients 有权
标题翻译：降低AGC切换瞬变影响的方法和装置
公开(公告)号：US20030083031A1
公开(公告)日：2003-05-01
申请号：US09984879
申请日：2001-10-31
发明人： Patrik Eriksson , Mats Eriksson
IPC分类号： H04B007/00
CPC分类号： H03G3/3089 , H03G1/0023 , H03G1/04 , H03G3/001 , H03M1/187
摘要： The present invention reduces automatic gain control (AGC) transients using first and second AGC processing branches to receive a signal. A gain is selectively adjusted (if desired) in the one of the AGC processing branches during a first time period. However, a gain is not adjusted in the other AGC processing branch during that first time period. The signals generated by the first and second AGC processing branches are then diversity processed to generate a received signal. The diversity processing effectively reduces the effect of any AGC transient.
摘要翻译：本发明使用第一和第二AGC处理分支减少自动增益控制（AGC）瞬变以接收信号。在第一时间段期间，AGC处理分支中的一个AGC选择性地调整增益（如果需要）。然而，在该第一时间段期间，其他AGC处理分支中的增益没有被调整。然后对由第一和第二AGC处理分支产生的信号进行分集处理以产生接收信号。分集处理有效地降低了任何AGC瞬变的影响。

79. 发明授权

US06369635B2 Temperature-compensated diode rectifier circuit for an HF level controller 失效
标题翻译：用于高频电平控制器的温度补偿二极管整流电路
公开(公告)号：US06369635B2
公开(公告)日：2002-04-09
申请号：US09751896
申请日：2000-12-28
申请人： Manfred Weiss , Martin Fritzmann
发明人： Manfred Weiss , Martin Fritzmann
IPC分类号： H03L500
CPC分类号： H03G3/3042 , H03F2200/78 , H03G1/04 , H03G3/3047
摘要： A temperature-compensated diode rectifier circuit is coupled to the outside of an HF amplifier (PA) to derive a rectified voltage (UD) from an HF output signal (RFOUT) with a rectifier input (IR) via a directional coupler (D-CO) with secondary connections (1, 2), and has a rectifier output (OR) for the rectified voltage (UD), a rectifier diode (D1), a charging capacitor (C1) and a ballast resistor (R2). To stabilize the rectified voltage against temperature influences, the rectifier input (IR) is connected to a d.c. input voltage (UIN), and a compensating diode (D2) is in series with the ballast resistor (R2), and a dropping resistor (R1) is in series with the rectifier diode (D1). According to the invention the rectifier diode (D1), the compensating diode (D2), the dropping resistor (R1), the ballast resistor (R2) and the directional coupler (D-CO) are connected to the d.c. input voltage (UIN) so that the voltage amplitude of the decoupled HF output signal (RFOUT) is added to the d.c. input voltage (UIN). Furthermore the dropping resistor (R1) of the rectifier diode (D1) is located between the charging capacitor (C1) and the rectifier output (OR) and the d.c. input voltage (UIN) is stabilized and is only slightly higher than twice the threshold voltage (UT) of a diode (D1, D2)
摘要翻译：温度补偿二极管整流电路耦合到HF放大器（PA）的外部，以通过定向耦合器（D-CO）从具有整流器输入（IR）的HF输出信号（RFOUT）导出整流电压（UD））具有二次连接（1,2），并且具有用于整流电压（UD）的整流器输出（OR），整流二极管（D1），充电电容器（C1）和镇流电阻器（R2）。为了稳定整流电压对温度的影响，整流器输入（IR）连接到直流。输入电压（UIN）和补偿二极管（D2）与镇流电阻（R2）串联，并且降压电阻（R1）与整流二极管（D1）串联。根据本发明，整流二极管（D1），补偿二极管（D2），下降电阻器（R1），镇流电阻器（R2）和定向耦合器（D-CO）连接到直流输入电压（UIN），使得去耦HF输出信号（RFOUT）的电压幅度被加到直流输入电压（UIN）。此外，整流二极管（D1）的下降电阻（R1）位于充电电容器（C1）和整流器输出（OR）之间，并且直流输入电压（UIN）稳定，仅略高于二极管（D1，D2）的阈值电压（UT）的两倍，

80. 发明授权

US06208209B1 Automatic gain control circuit using a capacitor for minimizing digital coupling 失效
标题翻译：自动增益控制电路采用电容器最小化数字耦合
公开(公告)号：US06208209B1
公开(公告)日：2001-03-27
申请号：US08807011
申请日：1997-02-26
申请人： Solomon Ng
发明人： Solomon Ng
IPC分类号： H03G330
CPC分类号： H03G1/04
摘要： An automatic gain control circuit comprising a variable gain amplifier having first and second differential gain control terminals, the first gain control terminal being connected to a constant reference voltage, a peak detector connected to the output of the variable gain amplifier and an integrator connected between the output of the peak detector and the second differential gain control terminal. The circuit further includes an integrating capacitor coupled to a ground terminal and a second capacitor connected between the first and second differential gain control terminals.
摘要翻译：一种自动增益控制电路，包括具有第一和第二差分增益控制端子的可变增益放大器，第一增益控制端子连接到恒定参考电压，连接到可变增益放大器的输出的峰值检测器和连接在可变增益放大器之间的积分器峰值检测器和第二差分增益控制端子的输出。电路还包括耦合到接地端子的积分电容器和连接在第一和第二差分增益控制端子之间的第二电容器。

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