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1. 发明授权

US07554407B2 Multi-mode power amplifier with low gain variation over temperature 有权
标题翻译：具有低温增益变化的多模功率放大器
公开(公告)号：US07554407B2
公开(公告)日：2009-06-30
申请号：US11683128
申请日：2007-03-07
申请人： Gary Hau , Jeffrey R. Turpel
发明人： Gary Hau , Jeffrey R. Turpel
IPC分类号： H03F3/04
CPC分类号： H03F1/0277 , H03F1/0261 , H03F1/30 , H03F3/19 , H03F3/72 , H03F2200/18 , H03F2200/411 , H03F2200/447 , H03F2200/451 , H03F2203/7231 , H03F2203/7236
摘要： A multi-mode RF amplifier is described having at least a higher and a lower power path coupling an input to an output. At a pre-selected output power level, the higher power path is enabled while the lower power path is disabled when more output power is required. The process is reversed when less power is needed. The present invention matches the power gain variation over temperature characteristic of each path such that, especially at the cross over point, the gain delta (the difference in power gain between the two paths) has minimal variation over temperature. Such power gain characteristic is required for meeting the test requirements, specifically the inner loop power control, for third generation (3G) cellular handsets.
摘要翻译：描述了具有至少将输入耦合到输出的较高和较低功率路径的多模RF放大器。在预选的输出功率电平下，当需要更多输出功率时，较低功率路径被禁用，较高功率路径被使能。当需要较少的电力时，该过程相反。本发明匹配每个路径的功率增益变化温度特性，使得特别是在交叉点处，增益增量（两个路径之间的功率增益的差异）在温度上具有最小的变化。为了满足第三代（3G）蜂窝手机的测试要求，特别是内环功率控制，需要这种功率增益特性。

2. 发明申请

US20080030276A1 MULTI-MODE POWER AMPLIFIER WITH HIGH EFFICIENCY UNDER BACKOFF OPERATION 有权
标题翻译：多功能功率放大器，具有高效率的背投操作
公开(公告)号：US20080030276A1
公开(公告)日：2008-02-07
申请号：US11841162
申请日：2007-08-20
申请人： Gary Hau , Abid Hussain
发明人： Gary Hau , Abid Hussain
IPC分类号： H03G3/30 , H04B1/034
CPC分类号： H03F1/0277 , H03F1/0261 , H03F1/56 , H03F3/19 , H03F3/211 , H03F3/245 , H03F3/72 , H03F2200/318 , H03F2200/411 , H03F2200/451 , H03F2203/7206 , H03F2203/7231 , H03F2203/7233 , H03F2203/7239
摘要： A multi-mode RF amplifier is disclosed having high and low output power modes and two power paths. A first RF amplifier delivers power to both paths. When the multi-mode RF amplifier is biased into the high power, HP, mode, substantial power is delivered via both (first and second) paths. While in the low power, LP, mode, an RF switch is turned off, creating a high input impedance, open circuit for the first path, and effectively isolating the two paths. Therefore, power is delivered by the first RF amplifier to the second path only. The impedance presented to the output of the first RF amplifier is equal to the input impedance of the second path which may be optimally set for maximizing power added efficiency or output power in LP mode. Note that, in a preferred embodiment, even in the HP mode more power is delivered to the second power path than to the first power path.
摘要翻译：公开了具有高和低输出功率模式和两个功率路径的多模RF放大器。第一个RF放大器为两个路径提供电源。当多模RF放大器被偏置到高功率HP模式时，通过（第一和第二）路径传送大量功率。在低功耗LP模式下，RF开关关闭，产生高输入阻抗，第一路径开路，有效隔离两路。因此，功率由第一RF放大器传送到第二路径。呈现给第一RF放大器的输出的阻抗等于第二路径的输入阻抗，该阻抗可以被最优化地设定，以在LP模式中最大化功率附加效率或输出功率。注意，在优选实施例中，即使在HP模式中，与第一功率路径相比，更多的功率被传送到第二功率路径。

3. 发明授权

US08680885B1 Low leakage logic circuit 有权
标题翻译：低泄漏逻辑电路
公开(公告)号：US08680885B1
公开(公告)日：2014-03-25
申请号：US13686002
申请日：2012-11-27
申请人： Valter Karavanic , Gary Hau
发明人： Valter Karavanic , Gary Hau
IPC分类号： H03K17/16 , H03K19/003 , H03K19/23
CPC分类号： H03K19/001 , H03K19/00392
摘要： A low leakage logic circuit. The low leakage logic circuit includes a control circuit for logic circuit. The control circuit has a first transistor, a second transistor, a third transistor, a first diode, a first resistor and a second resistor. When the control circuit is ON, a first circuit path in the logic circuit is supplied with a first voltage from the source terminal of the third transistor. This voltage acts as a logic output and has the ability to source current at output terminal of the logic circuit. When the control circuit is OFF, a second circuit path in the logic circuit is supplied with a second voltage from the control circuit which is lower than the turn-on voltage of the second circuit path. This voltage is insufficient to turn ON the logic circuit, hence no current flows into the logic circuit.
摘要翻译：低泄漏逻辑电路。低泄漏逻辑电路包括用于逻辑电路的控制电路。控制电路具有第一晶体管，第二晶体管，第三晶体管，第一二极管，第一电阻器和第二电阻器。当控制电路为ON时，从第三晶体管的源极端子向逻辑电路中的第一电路提供第一电压。该电压用作逻辑输出，并具有在逻辑电路的输出端输出电流的能力。当控制电路断开时，向控制电路提供逻辑电路中的第二电路，该第二电压低于第二电路路径的接通电压。该电压不足以导通逻辑电路，因此没有电流流入逻辑电路。

4. 发明授权

US07518446B2 Multi-mode power amplifier with reduced low power current consumption 有权
标题翻译：多模功率放大器，降低了低功耗电流消耗
公开(公告)号：US07518446B2
公开(公告)日：2009-04-14
申请号：US11385948
申请日：2006-03-21
申请人： Gary Hau
发明人： Gary Hau
IPC分类号： H03F1/14
CPC分类号： H03F1/56 , H03F1/0261 , H03F1/0277 , H03F3/19 , H03F3/72 , H03F2200/318 , H03F2200/411 , H03F2200/451 , H03F2203/7206
摘要： A multi-mode RF amplifier is disclosed having high and low output power modes composed of two power paths. When the multi-mode RF amplifier is biased into the high power, HP, mode, substantial power is delivered via both (first and second) paths. While in the low power, LP, mode, power is delivered via second path only which is designed to reduce current consumption and improve efficiency under low power (backoff) operation. The multi-mode RF amplifier has power amplifiers in one embodiment, but no mechanical or electronic switches. The multi-mode amplifier utilizes impedance matching circuits where the impedances change under different power amplifier bias conditions in order to optimize current consumption under both modes of operations and is power efficient for portable applications. Note that, in a preferred embodiment, even in the HP mode more power is delivered to the second power path than to the first power path.
摘要翻译：公开了具有由两个电源路径组成的高输出功率模式和低输出功率模式的多模RF放大器。当多模RF放大器被偏置到高功率HP模式时，通过（第一和第二）路径传送大量功率。在低功耗LP模式下，功率仅通过第二路径传输，其设计用于在低功耗（退避）操作下降低电流消耗并提高效率。多模RF放大器在一个实施例中具有功率放大器，但没有机械或电子开关。多模放大器利用阻抗匹配电路，其中阻抗在不同的功率放大器偏置条件下变化，以便在两种工作模式下优化电流消耗，并且对于便携式应用来说是功率效率。注意，在优选实施例中，即使在HP模式中，与第一功率路径相比，更多的功率被传送到第二功率路径。

5. 发明授权

US07479827B2 Multi-mode power amplifier with high efficiency under backoff operation 有权
标题翻译：多模功率放大器，在退避操作下效率高
公开(公告)号：US07479827B2
公开(公告)日：2009-01-20
申请号：US11841162
申请日：2007-08-20
申请人： Gary Hau , Abid Hussain
发明人： Gary Hau , Abid Hussain
IPC分类号： H03F1/14
CPC分类号： H03F1/0277 , H03F1/0261 , H03F1/56 , H03F3/19 , H03F3/211 , H03F3/245 , H03F3/72 , H03F2200/318 , H03F2200/411 , H03F2200/451 , H03F2203/7206 , H03F2203/7231 , H03F2203/7233 , H03F2203/7239
摘要： A multi-mode RF amplifier is disclosed having high and low output power modes and two power paths. A first RF amplifier delivers power to both paths. When the multi-mode RF amplifier is biased into the high power, HP, mode, substantial power is delivered via both (first and second) paths. While in the low power, LP, mode, an RF switch is turned off, creating a high input impedance, open circuit for the first path, and effectively isolating the two paths. Therefore, power is delivered by the first RF amplifier to the second path only. The impedance presented to the output of the first RF amplifier is equal to the input impedance of the second path which may be optimally set for maximizing power added efficiency or output power in LP mode. Note that, in a preferred embodiment, even in the HP mode more power is delivered to the second power path than to the first power path.
摘要翻译：公开了具有高和低输出功率模式和两个功率路径的多模RF放大器。第一个RF放大器为两个路径提供电源。当多模RF放大器被偏置到高功率HP模式时，通过（第一和第二）路径传送大量功率。在低功耗LP模式下，RF开关关闭，产生高输入阻抗，第一路径开路，有效隔离两路。因此，功率由第一RF放大器传送到第二路径。呈现给第一RF放大器的输出的阻抗等于第二路径的输入阻抗，该阻抗可以被最优化地设定，以在LP模式中最大化功率附加效率或输出功率。注意，在优选实施例中，即使在HP模式中，与第一功率路径相比，更多的功率被传送到第二功率路径。

6. 发明申请

US20070222508A1 Multi-mode power amplifier with reduced low power current consumption 有权
标题翻译：多模功率放大器，降低了低功耗电流消耗
公开(公告)号：US20070222508A1
公开(公告)日：2007-09-27
申请号：US11385948
申请日：2006-03-21
申请人： Gary Hau
发明人： Gary Hau
IPC分类号： H03F1/14
CPC分类号： H03F1/56 , H03F1/0261 , H03F1/0277 , H03F3/19 , H03F3/72 , H03F2200/318 , H03F2200/411 , H03F2200/451 , H03F2203/7206
摘要： A multi-mode RF amplifier is disclosed having high and low output power modes composed of two power paths. When the multi-mode RF amplifier is biased into the high power, HP, mode, substantial power is delivered via both (first and second) paths. While in the low power, LP, mode, power is delivered via second path only which is designed to reduce current consumption and improve efficiency under low power (backoff) operation. The multi-mode RF amplifier has power amplifiers in one embodiment, but no mechanical or electronic switches. The multi-mode amplifier utilizes impedance matching circuits where the impedances change under different power amplifier bias conditions in order to optimize current consumption under both modes of operations and is power efficient for portable applications. Note that, in a preferred embodiment, even in the HP mode more power is delivered to the second power path than to the first power path.
摘要翻译：公开了具有由两个电源路径组成的高输出功率模式和低输出功率模式的多模RF放大器。当多模RF放大器被偏置到高功率HP模式时，通过（第一和第二）路径传送大量功率。在低功耗LP模式下，功率仅通过第二路径传输，其设计用于在低功耗（退避）操作下降低电流消耗并提高效率。多模RF放大器在一个实施例中具有功率放大器，但没有机械或电子开关。多模放大器利用阻抗匹配电路，其中阻抗在不同的功率放大器偏置条件下变化，以便在两种工作模式下优化电流消耗，并且对于便携式应用来说是功率效率。注意，在优选实施例中，即使在HP模式中，与第一功率路径相比，更多的功率被传送到第二功率路径。

7. 发明授权

US08497736B1 Direct DC coupled push-pull BJT driver for power amplifier with built-in gain and bias current signal dependent expansion 有权
标题翻译：具有内置增益和偏置电流信号依赖扩展功能的直流直流耦合推挽式BJT驱动器
公开(公告)号：US08497736B1
公开(公告)日：2013-07-30
申请号：US13285605
申请日：2011-10-31
申请人： Dirk Leipold , Wade Allen , Gary Hau
发明人： Dirk Leipold , Wade Allen , Gary Hau
IPC分类号： H03F3/26
CPC分类号： H03F3/19 , H03F3/3022
摘要： A power amplifier having a driver stage and an output stage is configured to provide an amplified RF input signal. The driver stage of the power amplifier consists of one or more driver circuits consisting of a network of transistors, current sources, capacitive elements and resistive elements. An RF input signal is fed into the driver stage which is configured to provide a dynamic DC bias and an RF signal gain to a base terminal of a Bipolar Junction Transistor (BJT) power device present in the output stage. The output stage includes of a network of transistors, capacitive and resistive elements and when driven by the DC bias and the RF signal from the driver stage produces an amplified RF input signal at an output side of the output stage.
摘要翻译：具有驱动级和输出级的功率放大器被配置为提供放大的RF输入信号。功率放大器的驱动级由一个或多个由晶体管，电流源，电容元件和电阻元件组成的驱动电路组成。 RF输入信号被馈送到驱动器级，其被配置为向存在于输出级中的双极结晶体管（BJT）功率器件的基极端提供动态DC偏置和RF信号增益。输出级包括晶体管，电容和电阻元件的网络，并且当由DC偏置驱动时，来自驱动器级的RF信号在输出级的输出侧产生放大的RF输入信号。

8. 发明授权

US07427897B2 Power amplifier with close-loop adaptive voltage supply 有权
标题翻译：具有闭环自适应电源的功率放大器
公开(公告)号：US07427897B2
公开(公告)日：2008-09-23
申请号：US11350220
申请日：2006-02-08
申请人： Gary Hau , Peter Bealo
发明人： Gary Hau , Peter Bealo
IPC分类号： H03G3/20
CPC分类号： H03F1/0227 , H03F2200/465 , H03F2200/504 , H03F2200/507
摘要： A two-(or multi)stage power amplifier receives a variable RF input signal, and outputs an optimized. RF output signal from, for example, a mobile handset. The output power level from the handset is predetermined, as known in the art, by the received control signal from a base station. The first power amplifier stage amplifies the variable RF input signal and outputs an RF signal, Vin, to a power detector circuit and an RF signal to the second or next amplifier stage. The power detect circuit amplifies the Vin signal and rectifies that signal with a linearly biased diode and provides a detect signal to a DC to DC converter. The converter responds by providing an optimum voltage bias, which is linearly related to the DC voltage detect signal from the power detector, to the output stage, and, if desired, to the first and/or other stages of the power amplifier that optimizes the output power level while meeting the required linearity specification. The battery current consumption is optimized through this automatic, dynamically control of the supply voltage for the power amplifier at each output power level through the DC to DC converter.
摘要翻译：两（或多）级功率放大器接收可变RF输入信号，并输出优化。来自例如移动手持机的RF输出信号。来自手机的输出功率电平是本领域已知的，来自基站的接收到的控制信号是预定的。第一功率放大器级放大可变RF输入信号，并将RF信号Vin输出到功率检测器电路，并将RF信号输出到第二或下一个放大器级。功率检测电路放大Vin信号并用线性偏置二极管整流该信号，并向DC到DC转换器提供检测信号。转换器通过提供与来自功率检测器的直流电压检测信号线性相关的最佳电压偏置和输出级，并且如果需要，可以将功率放大器的第一和/或其他级优化为输出功率电平，同时满足所需的线性规格。通过这种自动，动态地控制通过DC-DC转换器的每个输出功率电平处的功率放大器的电源电压来优化电池电流消耗。

9. 发明授权

US07157966B2 Multi-mode power amplifier 有权
标题翻译：多模功率放大器
公开(公告)号：US07157966B2
公开(公告)日：2007-01-02
申请号：US11016397
申请日：2004-12-17
申请人： Atiqul Baree , Gary Hau , Mikhail Shirokov , James A. Roche, Jr.
发明人： Atiqul Baree , Gary Hau , Mikhail Shirokov , James A. Roche, Jr.
IPC分类号： H03G5/16
CPC分类号： H03F3/72 , H03F1/0261 , H03F1/0277 , H03F1/14 , H03F3/211
摘要： A power amplifier includes an input network, output stages, coupled in parallel and configured to output power optimally in corresponding power-ranges, the output stages coupled to the input network, an output impedance matching network, coupled to the output stages and not containing a switching element, and a bias-control network, coupled between the output impedance matching network, the input network, and the output stages. In some amplifiers the output impedance matching network does not contain a switching element corresponding to the output stage configured to output power in the highest range. In other amplifiers the bias-control network is configured to isolate output stages by providing a hard shut-off to transistors of the isolated output stages.
摘要翻译：功率放大器包括输入网络，输出级并联并且被配置为在相应的功率范围内最佳地输出功率，耦合到输入网络的输出级，耦合到输出级的输出阻抗匹配网络，并且不包含开关元件和偏置控制网络，耦合在输出阻抗匹配网络，输入网络和输出级之间。在一些放大器中，输出阻抗匹配网络不包含与被配置为在最高范围内输出功率的输出级相对应的开关元件。在其他放大器中，偏置控制网络配置为通过为隔离输出级的晶体管提供硬切断来隔离输出级。

10. 发明申请

US20060132232A1 Multi-mode power amplifier 有权
标题翻译：多模功率放大器
公开(公告)号：US20060132232A1
公开(公告)日：2006-06-22
申请号：US11016397
申请日：2004-12-17
申请人： Atiqul Baree , Gary Hau , Mikhail Shirokov , James Roche
发明人： Atiqul Baree , Gary Hau , Mikhail Shirokov , James Roche
IPC分类号： H03F1/14
CPC分类号： H03F3/72 , H03F1/0261 , H03F1/0277 , H03F1/14 , H03F3/211
摘要： A power amplifier includes an input network, output stages, coupled in parallel and configured to output power optimally in corresponding power-ranges, the output stages coupled to the input network, an output impedance matching network, coupled to the output stages and not containing a switching element, and a bias-control network, coupled between the output impedance matching network, the input network, and the output stages. In some amplifiers the output impedance matching network does not contain a switching element corresponding to the output stage configured to output power in the highest range. In other amplifiers the bias-control network is configured to isolate output stages by providing a hard shut-off to transistors of the isolated output stages.
摘要翻译：功率放大器包括输入网络，输出级并联并且被配置为在相应的功率范围内最佳地输出功率，耦合到输入网络的输出级，耦合到输出级的输出阻抗匹配网络，并且不包含开关元件和偏置控制网络，耦合在输出阻抗匹配网络，输入网络和输出级之间。在一些放大器中，输出阻抗匹配网络不包含与被配置为在最高范围内输出功率的输出级相对应的开关元件。在其他放大器中，偏置控制网络配置为通过为隔离输出级的晶体管提供硬切断来隔离输出级。

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