-
公开(公告)号：US5974041A
公开(公告)日：1999-10-26
申请号：US579169
申请日：1995-12-27
IPC分类号： H03F99/00 , H03F1/02 , H03F1/32 , H03F3/60 , H03F3/68 , H03F3/72 , H03G3/02 , H03G3/30 , H04B1/04 , H04B7/26 , H04J13/00
CPC分类号： H03F3/211 , H03F1/0277 , H03F1/0288 , H03F3/602 , H03F3/72 , H03G3/3042 , H04B1/0483 , H03F2200/294 , H03F2203/7236 , H04B2001/0408
摘要： An amplifier circuit for providing an amplified signal in response to an input signal. The amplifier circuit includes an input network for applying the input signal to a selected at least one of a plurality of amplifier stages. An output network is provided for coupling the amplified signal from the selected at least one amplifier stage. The appropriate amplifier stage is selected by a control circuit in response to a desired power value of the amplified signal. By selectively activating only the amplifier stage(s) that are necessary to provide the desired level of output power, increased DC efficiency can be accomplished in applications that require an amplifier which operates linearly over a wide dynamic range.
摘要翻译： 一种用于响应于输入信号提供放大信号的放大器电路。 放大器电路包括用于将输入信号施加到所选择的多个放大器级中的至少一个的输入网络。 提供输出网络用于耦合来自所选择的至少一个放大器级的放大信号。 响应于放大信号的期望功率值，控制电路选择合适的放大器级。 通过选择性地仅激活提供期望电平的输出功率所需的放大器级，可以在需要在宽动态范围内线性运行的放大器的应用中实现增加的DC效率。
-
公开(公告)号：US20110147560A1
公开(公告)日：2011-06-23
申请号：US12971926
申请日：2010-12-17
申请人： Richard J. Camarillo
发明人： Richard J. Camarillo
CPC分类号： F16M13/00 , A47B13/023 , A47B23/042 , F16M11/10 , F16M11/22 , F16M2200/02 , F16M2200/08 , Y10T29/49826
摘要： Portable workstation or desk apparatus and methods. In one embodiment, a portable workstation is comprised of a plurality of components including a work surface or upper element, a stem or support element, and an anchor or base element. In one variant, the work surface element (and/or the base element) can be mounted to the stem element in first and second configurations. The various configurations provides a substantially level work surface (relative to the base) or a substantially inclined work surface, and/or varying degrees of offset relative to the base.
摘要翻译： 便携式工作站或桌面设备和方法。 在一个实施例中，便携式工作站由多个部件组成，包括工作表面或上部元件，杆或支撑元件以及锚或基部元件。 在一个变型中，工作表面元件（和/或基本元件）可以在第一和第二构造中安装到杆元件。 各种配置提供基本上平坦的工作表面（相对于基座）或基本上倾斜的工作表面和/或相对于基座的偏移程度。
-
公开(公告)号：US6137355A
公开(公告)日：2000-10-24
申请号：US430670
申请日：1999-10-28
CPC分类号： H03F3/211 , H03F1/0216 , H03F1/0277 , H03F3/72
摘要： An amplifier circuit having a high linearity mode of operation and a high efficiency mode of operation. The amplifier circuit comprises an amplifier having a variable active device periphery and a variable supply voltage; and a control circuit, coupled to the amplifier, for decreasing the variable active device periphery and increasing the variable supply voltage when in the high linearity mode of operation, and for increasing the variable active device periphery and decreasing the variable supply voltage when in the high efficiency mode of operation.
-
公开(公告)号：US08746156B2
公开(公告)日：2014-06-10
申请号：US12971926
申请日：2010-12-17
申请人： Richard J. Camarillo
发明人： Richard J. Camarillo
IPC分类号： A47B13/02
CPC分类号： F16M13/00 , A47B13/023 , A47B23/042 , F16M11/10 , F16M11/22 , F16M2200/02 , F16M2200/08 , Y10T29/49826
摘要： Portable workstation or desk apparatus and methods. In one embodiment, a portable workstation is comprised of a plurality of components including a work surface or upper element, a stem or support element, and an anchor or base element. In one variant, the work surface element (and/or the base element) can be mounted to the stem element in first and second configurations. The various configurations provides a substantially level work surface (relative to the base) or a substantially inclined work surface, and/or varying degrees of offset relative to the base.
摘要翻译： 便携式工作站或桌面设备和方法。 在一个实施例中，便携式工作站由多个部件组成，包括工作表面或上部元件，杆或支撑元件以及锚或基部元件。 在一个变型中，工作表面元件（和/或基本元件）可以在第一和第二构造中安装到杆元件。 各种配置提供基本上平坦的工作表面（相对于基座）或基本上倾斜的工作表面和/或相对于基座的偏移程度。
-
公开(公告)号：US07085585B2
公开(公告)日：2006-08-01
申请号：US10404688
申请日：2003-03-31
IPC分类号： H04B1/38
CPC分类号： H04M19/04 , H04M19/047
摘要： A system and a method are provided for vibrating a portable device. The system includes a vibrator housing with stops, a vibrator circuit, and a controller. The controller has an output to supply alternating electric current. The vibrator circuit includes a vibrator coil and a magnetic vibrator rod. The vibrator coil is made of a conductive material and has an inside core space and inputs to accept the alternating electric current. The vibrator coil generates an alternating magnetic field through the core space in response to the alternating electric current and the vibrator rod moves in a reciprocating linear fashion in the core space in response to the alternating magnetic field. The vibrator rod has ends with audio damping pads impacting against stops in the vibrator housing. The vibrator housing vibrates in response to the vibrator rod impacting against the stops. The controller has an input for selecting frequency commands in response to predetermined portable device conditions and supplies electric current alternating at a frequency responsive to the commands. In one aspect, the portable device is a wireless communications device and the controller selects commands in response to received calls from calling telephone numbers.
摘要翻译： 提供了用于振动便携式设备的系统和方法。 该系统包括具有止动件的振动器壳体，振动器电路和控制器。 控制器具有供给交流电流的输出。 振子电路包括振动器线圈和磁振子棒。 振动器线圈由导电材料制成，并且具有内部核心空间和输入以接受交流电流。 振动器线圈响应于交变电流而产生通过芯空间的交变磁场，并且振动器杆响应于交变磁场以核心空间中的往复线性方式移动。 振动杆具有与振动器壳体中的止动件冲击的音频阻尼垫的端部。 振动器壳体响应于振动杆撞击止动件而振动。 控制器具有用于响应于预定的便携式设备条件选择频率命令的输入，并且以响应于命令的频率交替地提供电流。 在一个方面，便携式设备是无线通信设备，并且控制器响应于来自呼叫电话号码的接收呼叫选择命令。
-
公开(公告)号：US06208202B1
公开(公告)日：2001-03-27
申请号：US09248048
申请日：1999-02-10
IPC分类号： H03F114
CPC分类号： H03F3/72 , H03F3/602 , H03F2203/7231 , H03F2203/7239 , H03G1/0088
摘要： A power amplifier circuit arrangement including a driver amplifier, a switch, an amplifier path having a band pass filter and a power amplifier, and a bypass path which bypasses the power amplifier when excess gain and output power are not needed. When an RF-analog signal from the driver amplifier is switched to the amplifier path, the signal is band-pass filtered and amplified. Then the signal is split into an in-phase and a quadrature signal. Either the in-phase or the quadrature signal is inverted and summed with the other of the in-phase or quadrature signal, and the summed signal is transmitted to an output port. When the RF-signal from the driver amplified is switched to the bypass path, the power amplifier is turned off and the bypass path directs the signal to the output of the power amplifier, which appears as a high impedance to the signal. The signal reflects off the power amplifier to the output port. This design preserves the benefits of bypassing the power amplifier by reducing the amount of switching loss introduced into the circuit.
摘要翻译： 包括驱动器放大器，开关，具有带通滤波器的放大器路径和功率放大器的功率放大器电路装置以及当不需要过量增益和输出功率时旁路功率放大器的旁路路径。 当来自驱动放大器的RF模拟信号切换到放大器路径时，该信号被带通滤波和放大。 然后将信号分成同相和正交信号。 同相或正交信号被反相并与同相或正交信号中的另一个相加，并且求和的信号被发送到输出端口。 当放大的驱动器的RF信号切换到旁路路径时，功率放大器关闭，旁路路径将信号引导到功率放大器的输出端，功率放大器的输出显示为信号的高阻抗。 该信号将功率放大器反射到输出端口。 这种设计保留了通过减少引入电路的开关损耗量绕过功率放大器的好处。
-
公开(公告)号：US6069525A
公开(公告)日：2000-05-30
申请号：US843904
申请日：1997-04-17
CPC分类号： H03F3/211 , H03F1/0244 , H03F1/0261 , H03F3/72 , H03F2203/7236
摘要： An amplifier circuit having a high linearity mode of operation and a high efficiency mode of operation. The amplifier circuit comprises an amplifier having a variable active device periphery and a variable supply voltage; and a control circuit, coupled to the amplifier, for decreasing the variable active device periphery and increasing the variable supply voltage when in the high linearity mode of operation, and for increasing the variable active device periphery and decreasing the variable supply voltage when in the high efficiency mode of operation.
摘要翻译： 具有高线性操作模式和高效率操作模式的放大器电路。 放大器电路包括具有可变有源器件周边和可变电源电压的放大器; 以及耦合到放大器的控制电路，用于在高线性运行模式下减小可变有源器件周边并增加可变电源电压，并且用于在高电平时增加可变有源器件周边并减小可变电源电压 效率运行模式。
-
公开(公告)号：US6060949A
公开(公告)日：2000-05-09
申请号：US158456
申请日：1998-09-22
IPC分类号： H03F3/24 , H03F1/02 , H03F1/14 , H03F3/60 , H03F3/68 , H03F3/72 , H03G1/00 , H04B1/04 , H04Q7/32
CPC分类号： H03F3/72 , H03F3/602 , H03G1/0088 , H03F2203/7231 , H03F2203/7239
摘要： A power amplifier circuit arrangement including a power amplifier, and a bypass network for bypassing an RF-input signal around the power amplifier when excess gain and output power are not needed. When the bypass network is used, the power amplifier is turned off. A circulator connects the bypass network to the power amplifier output, thus removing the requirement of an output switch. The RF-input signal enters the circulator which routes the signal toward the output of the power amplifier. Because the amplifier is off, its output appears as a high impedance and reflects the signal back to the circulator. The circulator routes the reflected signal the signal output.
摘要翻译： 一种功率放大器电路装置，包括功率放大器和旁路网络，用于在不需要额外的增益和输出功率时旁路功率放大器周围的RF输入信号。 当使用旁路网络时，功率放大器关闭。 循环器将旁路网络连接到功率放大器输出，从而消除了输出开关的要求。 RF输入信号进入循环器，将信号路由到功率放大器的输出。 由于放大器关闭，其输出显示为高阻抗，并将信号反射回循环器。 循环器将反射信号传送到信号输出端。
-
9.发明授权Systems and methods for blind source separation of wireless communication signals 失效用于盲源分离无线通信信号的系统和方法公开(公告)号：US07231227B2
公开(公告)日：2007-06-12
申请号：US10929847
申请日：2004-08-30
申请人： Amit Kalhan , Ramon Khalona , Henry Chang , Doug Dunn , Richard J. Camarillo
发明人： Amit Kalhan , Ramon Khalona , Henry Chang , Doug Dunn , Richard J. Camarillo
CPC分类号： H04L25/03006
摘要： A multi-mode receiver and methods are provided, which use blind source separation (BSS) analysis to distinguish the various wireless communication signals from each other. Specifically, different signal types can be identified by BSS. The different signal types can be in overlapping frequencies or they can be in completely different frequencies. The BSS analysis may use center or carrier frequency, bandwidth, modulation scheme, access scheme, or wireless communication resources as an input to assist in the BSS.
摘要翻译： 提供了一种多模式接收机和方法，其使用盲源分离（BSS）分析来区分各种无线通信信号。 具体来说，BSS可以识别不同的信号类型。 不同的信号类型可以是重叠频率，也可以是完全不同的频率。 BSS分析可以使用中心或载波频率，带宽，调制方案，接入方案或无线通信资源作为输入来协助BSS。
-
公开(公告)号：US5872481A
公开(公告)日：1999-02-16
申请号：US767124
申请日：1996-12-09
IPC分类号： H03F99/00 , H03F1/02 , H03F1/32 , H03F3/60 , H03F3/68 , H03F3/72 , H03G3/00 , H03G3/02 , H03G3/30 , H04B1/04 , H04B7/26
CPC分类号： H03F3/211 , H03F1/0277 , H03F1/0288 , H03F3/602 , H03F3/72 , H03G3/3042 , H04B1/0483 , H03F2200/294 , H03F2203/7236 , H04B2001/0408
摘要： An amplifier circuit for providing an amplified signal in response to an input signal. The amplifier circuit includes an input network for applying the input signal to a selected at least one of a plurality of amplifier stages. An output network is provided for coupling the amplified signal from the selected at least one amplifier stage. The appropriate amplifier stage is selected by a control circuit in response to a desired power value of the amplified signal. By selectively activating only the amplifier stage(s) that are necessary to provide the desired level of output power, increased DC efficiency can be accomplished in applications that require an amplifier which operates linearly over a wide dynamic range.
-
-
-
-
-
-
-
-
-
搜索结果
13 条记录 (耗时 0.023 秒)
