专利快速检索-快速检索全球专利，免费商用专利数据库-IPRDB

1. 发明授权

US06546233B1 Linearization of power amplifier 有权
标题翻译：功率放大器的线性化
公开(公告)号：US06546233B1
公开(公告)日：2003-04-08
申请号：US09587893
申请日：2000-06-06
申请人： Boris Aleiner , Winston Hong Lieu
发明人： Boris Aleiner , Winston Hong Lieu
IPC分类号： H04B104
CPC分类号： H03F1/3241
摘要： A apparatus linearizing and technique for linearizing a non-linear power amplifier used in a transmitter of, e.g., a TDMA mobile wireless telephone. Linearization of the non-linear amplifier by changing the shape of the input signal is performed when the input signal level is high, thus increasing efficiency or reducing power consumption at that time, albeit at the cost of increased inter-symbol interference (ISI). However, since the input signals at that time are at a high level, the increased ISI can be tolerated and adjacent symbols can still be distinguished from one another. The invention allows use of a non-linear power amplifier which typically enjoys a lower current consumption than that of a linear power amplifier, thus increasing the time between battery recharges and/or reducing the overall size of the wireless telephone device. The power amplifier is operated in a linear mode when transmitted power is low, thus allowing differentiation between adjacent symbols (i.e., improvement of ISI). At high input power, the power amplifier is used in its non-linear mode to reduce current consumption. The signal shape is changed by changing the parameters of the root raised cosine filters. When the input level is low, the existing, otherwise conventional filter's parameters are used. However, when the input power level is high, modified parameters are used. Switching between the two sets of filter parameters is preferably performed at baseband. Thus, a relationship between RRCF filter parameters and the amount of spectrum utilized by the transmitted signal is utilized, and RRCF filter parameters are adjusted based on a desired limitation to an output spectrum.
摘要翻译：一种用于线性化例如TDMA移动无线电话的发射机中使用的非线性功率放大器的线性化和技术的装置。当输入信号电平较高时，通过改变输入信号的形状来实现非线性放大器的线性化，从而提高效率或减少此时的功耗，尽管增加了符号间干扰（ISI）。然而，由于此时的输入信号处于高电平，因此可以容忍增加的ISI，并且相邻的符号仍然可以彼此区分。本发明允许使用通常比线性功率放大器具有更低的电流消耗的非线性功率放大器，从而增加电池充电之间的时间和/或减小无线电话设备的总体尺寸。当发射功率低时，功率放大器以线性模式工作，从而允许相邻符号之间的区分（即ISI的改善）。在高输入功率下，功率放大器以非线性模式使用，以减少电流消耗。通过改变根升余弦滤波器的参数来改变信号形状。当输入电平低时，使用现有的常规滤波器参数。然而，当输入功率电平较高时，使用修改的参数。两组滤波器参数之间的切换优选地在基带处执行。因此，利用RRCF滤波器参数与由发射信号使用的频谱量之间的关系，并且基于对输出频谱的期望限制来调整RRCF滤波器参数。

2. 发明申请

US20060264190A1 System and method for linearizing nonlinear power amplifiers 审中-公开
标题翻译：用于线性化非线性功率放大器的系统和方法
公开(公告)号：US20060264190A1
公开(公告)日：2006-11-23
申请号：US11136015
申请日：2005-05-23
申请人： Boris Aleiner
发明人： Boris Aleiner
IPC分类号： H04Q7/32
CPC分类号： H04B1/04 , H03F1/02 , H03F1/0205 , H03F1/32 , H03F1/3223 , H03F1/3229 , H03F3/211 , H03F3/24 , H03F2200/204 , H03F2201/3215 , H04B2001/0441
摘要： An apparatus linearizing and technique for linearizing a nonlinear power amplifier used in transmitters of systems for digital wireless communications. Linearization of the nonlinear amplifier is achieved by adding additional signals generated from a specification-given input data stream to the output of the nonlinear power amplifier. The invention allows use of nonlinear power amplifier, which typically enjoys a lower current consumption than that of a linear power amplifier, thus increasing the time between batteries recharges (for user transmitter equipment) and/or reducing the overall size, electric bill expenses, and cooling requirements (for network transmitter equipment). Input data, generated by a given digital wireless standard, is raised to a mathematical power by a required number and converted to RF of a transmitted signal frequency. Then all obtained RF waveforms are added with the same amplitude and the opposite phase to the spectrum of sidelobes generated by nonlinearity of a power amplifier.
摘要翻译：一种用于线性化用于数字无线通信系统的发射机中的非线性功率放大器的线性化和技术的装置。通过将从规定给定的输入数据流生成的附加信号添加到非线性功率放大器的输出来实现非线性放大器的线性化。本发明允许使用非线性功率放大器，其通常比线性功率放大器具有更低的电流消耗，从而增加了电池充电（对于用户发射机设备）和/或减小总体尺寸，电费用费用和冷却要求（适用于网络发射机设备）。由给定数字无线标准产生的输入数据通过所需数量提高到数学功率，并转换为发射信号频率的RF。然后，所有获得的RF波形以与功率放大器的非线性产生的旁瓣频谱相同的幅度和相反的相位相加。

3. 发明授权

US06442378B1 Power level determination device in an RF booster for wireless communications 失效
标题翻译：用于无线通信的RF加强器中的功率电平确定装置
公开(公告)号：US06442378B1
公开(公告)日：2002-08-27
申请号：US09116110
申请日：1998-07-15
申请人： Joseph Aboukhalil , Boris Aleiner , Boris Bark
发明人： Joseph Aboukhalil , Boris Aleiner , Boris Bark
IPC分类号： H03C162
CPC分类号： H03M1/808 , H03M1/36
摘要： A power level determination device provides an output voltage usable as a specific reference power level corresponding to each RF input power level. The device includes a peak detector, which detects a pulse-type signal at its input and provides a non-pulse-type signal at its output. N comparators are provided, where N is an integer. Each of the N comparators has an output, a first input coupled to the output of the peak detector, and a second input coupled to a respectively different threshold voltage. The first one of the N comparators has a maximum threshold voltage. The threshold voltages decrease monotonically from No. 1 to No. N. N exclusive-OR components are provided. A first one of the N exclusive-OR components is coupled to ground and to the output of a first one of the N comparators. Each of the remaining N−1 exclusive-OR components is coupled to the outputs of a respectively different pair of the N comparators, so that at any given time, a single one of the N exclusive-OR components has an output signal of a logic level that is different from the logic level of the outputs of the remaining N−1 exclusive-OR components. N resistive divider circuits are coupled to respective ones of the N exclusive-OR components. Each of the N resistive divider circuits provides a respectively different predetermined output voltage as an indication of a power level of the pulse-type signal, if the exclusive-OR component to which that circuit is coupled is the single one of the N exclusive-OR components.
摘要翻译：功率电平确定装置提供可用作对应于每个RF输入功率电平的特定参考功率电平的输出电压。该装置包括峰值检测器，其检测其输入端的脉冲型信号，并在其输出端提供非脉冲型信号。提供了N个比较器，其中N是整数。 N个比较器中的每个具有输出，耦合到峰值检测器的输出的第一输入和耦合到分别不同的阈值电压的第二输入。 N个比较器中的第一个具有最大阈值电压。阈值电压从1号到N号单调减少。提供了N个异或分量。 N个异或分量中的第一个被耦合到地和N个比较器中的第一个的输出。剩余的N-1个异或分量中的每一个耦合到N个比较器的不同对的输出，使得在任何给定的时间，N个异或分量中的一个具有逻辑的输出信号电平与剩余的N-1异或分量的输出的逻辑电平不同。 N个电阻分压器电路耦合到N个异或分量中的相应的一个。每个N个电阻分压器电路提供分别不同的预定输出电压作为脉冲型信号的功率电平的指示，如果该电路所耦合的异或分量是N个异或组件。

4. 发明授权

US06175748B1 Methods and apparatus for determination of a power level in an RF booster for wireless communications 失效
标题翻译：用于确定用于无线通信的RF增强器中的功率电平的方法和装置
公开(公告)号：US06175748B1
公开(公告)日：2001-01-16
申请号：US09020555
申请日：1998-02-09
申请人： Joseph C. Aboukhalil , Boris Aleiner , Boris A. Bark
发明人： Joseph C. Aboukhalil , Boris Aleiner , Boris A. Bark
IPC分类号： H04B138
CPC分类号： H04B1/3877
摘要： A booster for amplifying the signal of a mobile unit of a cellular telephone system. The booster includes a level determination device which produces a reference level based on a power level of a signal received from the mobile unit. The level determination device includes a step voltage circuit which produces a step voltage based on the power level of the signal received from the mobile unit. The step voltage is supplied to a resulting voltage circuit which produces a resulting voltage based on the step voltage, the resulting voltage suitably providing a reference level for the booster.
摘要翻译：用于放大蜂窝电话系统的移动单元的信号的增强器。升压器包括电平确定装置，其基于从移动单元接收的信号的功率电平产生参考电平。电平确定装置包括步进电压电路，其基于从移动单元接收的信号的功率电平产生阶跃电压。步进电压被提供给所得到的电压电路，其根据阶跃电压产生所得到的电压，所得到的电压适当地为升压器提供参考电平。

5. 发明授权

US6038460A Receiver for an RF signal booster in wireless communication system 失效
标题翻译：无线通信系统中RF信号增强器的接收器
公开(公告)号：US6038460A
公开(公告)日：2000-03-14
申请号：US878268
申请日：1997-06-18
申请人： Boris Aleiner
发明人： Boris Aleiner
IPC分类号： H04B1/18 , H04Q7/32
CPC分类号： H04B1/18
摘要： In a wireless communications system, an RF booster provided intermediate an antenna device for receiving RF signals and a receiver device for providing a predetermined amount of gain to said received RF signals and converting said RF signals to audio frequency signals, the RF booster comprising a first amplifier device for receiving input signals from the antenna via a first cable connecting device, the first low noise amplifier providing a first gain equal to the predetermined amount of gain of the receiver device; a second amplifier device connected in series with the first amplifier device, the second amplifier device connected via a second cable connecting device to the receiver device and providing a second amount of gain of a value sufficient to compensate for signal loss provided by the first and second cable means; and a switch element capable of switching out the first gain of the first amplifier device, the switch element controlled by a control signal in accordance with a sensed level of received input RF signals, wherein for small input RF signals received, the switch element is switched off to provide both the first and second gain in the RF booster, and for large input signals received, the switch element is switched on to provide only the second gain for the RF booster.
摘要翻译：在无线通信系统中，RF增强器被提供在用于接收RF信号的天线设备之间，以及用于向所述接收的RF信号提供预定量的增益并将所述RF信号转换为音频信号的接收机设备，所述RF增强器包括第一放大器装置，用于经由第一电缆连接装置从天线接收输入信号，第一低噪声放大器提供等于接收机装置的预定增益量的第一增益; 与所述第一放大器装置串联连接的第二放大器装置，所述第二放大器装置经由第二电缆连接装置连接到所述接收装置，并提供足以补偿由所述第一和第二放大器提供的信号损耗的第二量增益值电缆手段; 以及能够切换第一放大器装置的第一增益的开关元件，开关元件根据接收到的输入RF信号的感测电平由控制信号控制，其中对于接收到的小输入RF信号，开关元件被切换关闭以提供RF增强器中的第一和第二增益，并且对于接收到的大输入信号，开关元件被接通以仅为RF增强器提供第二增益。

你已经成功收藏专利！

检索式保存成功!

IPRDB

热门服务

关于我们

友情链接

联系方式