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1. 发明授权

US5475681A Wireless in-building telecommunications system for voice and data communications 失效
标题翻译：用于语音和数据通信的无线建筑内电信系统
公开(公告)号：US5475681A
公开(公告)日：1995-12-12
申请号：US166194
申请日：1994-01-31
申请人： Richard E. White , Thomas A. Freeburg , James J. Berken , Roy T. Ogasawara , James E. Mitzlaff , Gregory J. Bedlek
发明人： Richard E. White , Thomas A. Freeburg , James J. Berken , Roy T. Ogasawara , James E. Mitzlaff , Gregory J. Bedlek
IPC分类号： G06F13/42 , H04B1/16 , H04B1/38 , H04L12/56 , H04L12/64 , H04M1/73 , H04W92/02 , H04B7/15 , H04L12/403
CPC分类号： H04W92/02 , G06F13/423 , H04B1/1615 , H04B1/38 , H04L12/56 , H04L12/64 , H04L12/6402 , H04W52/0245
摘要： An improved network interface architecture for a packet switch provides a mechanism for handling voice and data packets. Bandwidth allocation can be changed because control and data memories are synchronized to one another. A hierarchical addressing technique is employed to enhance flexibility in handling packet information. This method permits packet message data and certain packet control data to be stored in memory locations without having to be duplicated at a different memory location prior to transmission of the packet. In an exemplary wireless TDMA packet network a control module (CM) sends a time stamp relative to the beginning of its frame in a synchronization packet allowing each of a plurality of user modules (UM) to maintain synchronization relative to the CM. The CM uses a plurality of directional antennas and transmits the synchronization packets over each antenna over a predetermined number of frames. The UMs use a receive time stamp to identify the beginning of a received synchronization packet. The difference between the time stamps combined with a delay constant is used by the UMs to adjust time synchronization to the CM frame. Packets are communicated between the controller and the peripherals at the UM and CM over a bus using a communication protocol which increases the efficiencies of packet communications by allowing additional direct command lines between the communications controller and peripherals.
摘要翻译：用于分组交换机的改进的网络接口架构提供了用于处理语音和数据分组的机制。可以改变带宽分配，因为控制和数据存储器彼此同步。采用分层寻址技术来提高处理分组信息的灵活性。该方法允许分组消息数据和某些分组控制数据存储在存储器位置中，而不必在传输分组之前在不同的存储器位置被复制。在示例性无线TDMA分组网络中，控制模块（CM）在同步分组中相对于其帧的开始发送时间戳，允许多个用户模块（UM）中的每一个相对于CM保持同步。 CM使用多个定向天线，并在预定数量的帧上通过每个天线发送同步分组。 UM使用接收时间戳来识别接收到的同步分组的开始。时间戳与延迟常数之间的差异由UM用于调整与CM帧的时间同步。通过使用通信协议的通信协议，在UM和CM之间的控制器和外设之间通过总线传送数据包，通过允许通信控制器和外围设备之间的附加直接命令行来提高数据包通信的效率。

2. 发明授权

US5486789A Apparatus and method for providing a baseband digital error signal in an adaptive predistorter 失效
标题翻译：在自适应预失真器中提供基带数字误差信号的装置和方法
公开(公告)号：US5486789A
公开(公告)日：1996-01-23
申请号：US395259
申请日：1995-02-28
申请人： Robert L. Palandech , Wayne H. Bradley , George F. Opas , James E. Mitzlaff
发明人： Robert L. Palandech , Wayne H. Bradley , George F. Opas , James E. Mitzlaff
IPC分类号： H03F1/32 , H04B1/04
CPC分类号： H03F1/3258 , H03F1/3247 , H03F2200/57 , H03F2201/3233
摘要： The present invention provides an apparatus (200) and method (500) for providing a baseband digital error signal in an adaptive predistorter. A carrier cancellation circuit (202) provides a difference (212) between a first signal (208) based on an amplifier output and second signal (210) based on a data input. A quadrature demodulator (204) provides a baseband analog error signal (214) based on the difference (212). An analog-to-digital converter (206) provides the baseband digital error signal (216) based on the baseband analog error signal (214).
摘要翻译：本发明提供一种用于在自适应预失真器中提供基带数字误差信号的装置（200）和方法（500）。载波消除电路（202）基于数据输入提供基于放大器输出的第一信号（208）和第二信号（210）之间的差（212）。正交解调器（204）基于差值（212）提供基带模拟误差信号（214）。模数转换器（206）基于基带模拟误差信号（214）提供基带数字误差信号（216）。

3. 发明授权

US4998289A Signal integrity control technique for an RF communication system 失效
标题翻译： RF通信系统的信号完整性控制技术
公开(公告)号：US4998289A
公开(公告)日：1991-03-05
申请号：US203363
申请日：1988-06-02
申请人： Duane C. Rabe , James E. Mitzlaff
发明人： Duane C. Rabe , James E. Mitzlaff
IPC分类号： H04B1/10 , H04W16/14 , H04W24/00 , H04W28/22
CPC分类号： H04W16/14 , H04B1/1027 , H04B1/1081 , H04W24/00 , H04W28/22
摘要： An interference detecting circuit is used in a cellular radiotelephone communication system which employs angular modulated frequencies in order to determine when to change the communication process so as to maintain the integrity of the communication path. For example, when the circuit detects an excessive amount of multipath or co-channel interference on a channel serving an active call, the system may decrease the effective data bit rate. The circuit includes a logarithmic envelope detector for receiving a channel's angular modulated signal and for providing a log envelope output signal, a high pass filter for removing a particular range of undesired frequencies from the log envelope output signal, and a level detector for indicating the level of filtered output signal. The output of the level detector represents the amount of interference on the angular modulated frequency signal. A microcomputer analyzes the amount of interference to determine when such communication process changes are desired.
摘要翻译：在蜂窝无线电话通信系统中使用干扰检测电路，其采用角度调制频率，以便确定何时改变通信过程，以便保持通信路径的完整性。例如，当电路在服务于主动呼叫的信道上检测到过多的多径或同信道干扰时，系统可能会降低有效数据比特率。电路包括对数包络检测器，用于接收通道的角度调制信号并提供对数包络输出信号，高通滤波器用于从对数包络输出信号去除不期望频率的特定范围;以及电平检测器，用于指示电平的滤波输出信号。电平检测器的输出表示角调制频率信号上的干扰量。微机分析干扰量以确定何时需要这种通信过程改变。

4. 发明申请

US20090061862A1 PEER TO PEER SERVICE DISCOVERY SHARING 审中-公开
标题翻译：与对等服务发现共享
公开(公告)号：US20090061862A1
公开(公告)日：2009-03-05
申请号：US11848212
申请日：2007-08-30
申请人： William P. Alberth, JR. , Armin W. Klomsdorf , Michael D. Kotzin , Eric L. Krenz , James E. Mitzlaff , James P. Phillips , Lorenzo A. Ponce De Leon , Charles B. Swope
发明人： William P. Alberth, JR. , Armin W. Klomsdorf , Michael D. Kotzin , Eric L. Krenz , James E. Mitzlaff , James P. Phillips , Lorenzo A. Ponce De Leon , Charles B. Swope
IPC分类号： H04Q7/20
CPC分类号： H04W48/16 , H04W8/005 , H04W48/04
摘要： If the mobile station (101) locates a peer it will request network metadata and may obtain location related services or service lists. The mobile station (101) negotiates with one of more peers (103) to share the work load of background scanning for network services. After successful negotiation, any peers in the “discovery net” will report or advertise to each other of any newly discovered networks, or networks to which connectivity has been lost. Since the various mobile stations may, when powered on, scan periodically for network changes, the metadata stored on the mobile station (101) will be dynamic and will change periodically upon travels and/or encounters with additional peers. Because the peers (103) may also possess location information, the mobile station (101) may additionally adjust its scan to prioritize services advertised by those members of peers (103) that are located most proximate to the mobile station (101).
摘要翻译：如果移动站（101）定位对等体，则它将请求网络元数据，并且可以获得位置相关服务或服务列表。移动站（101）与多个对等体（103）中的一个协商以共享用于网络服务的后台扫描的工作负载。在成功协商之后，“发现网络”中的任何对等体将报告或宣传任何新发现的网络或连接已丢失的网络。由于各种移动站可以在上电时周期性地扫描网络改变，存储在移动台（101）上的元数据将是动态的，并且将随着额外的对等体的行进和/或遇到周期性地改变。由于对等体（103）还可以拥有位置信息，所以移动台（101）可以附加地调整其扫描以对位于最靠近移动站（101）的对等体（103）的那些成员通告的服务进行优先级排序。

5. 发明授权

US07486144B2 RF power amplifier protection 失效
标题翻译：射频功率放大器保护
公开(公告)号：US07486144B2
公开(公告)日：2009-02-03
申请号：US11683069
申请日：2007-03-07
申请人： James E. Mitzlaff , Joseph F. Robin, Jr.
发明人： James E. Mitzlaff , Joseph F. Robin, Jr.
IPC分类号： H03F1/52
CPC分类号： H04B1/0466 , H03F1/523
摘要： A circuit and method for protecting a radio frequency power amplifier against peak drain voltage. A detector circuit has an input connected to a drain of a power transistor of an amplification stage of the power amplifier to detect a peak drain voltage therefrom. The detector circuit outputs a protection signal when the detected peak drain voltage exceeds a predetermined reference level. A shutdown circuit is coupled to the detector circuit and inputs the protection signal therefrom. The protection signal is used to remove a gate bias of at least one amplification stage of the power amplifier. High frequency components are used in the detector and protection circuits to immediately reduce the drain voltage from one or more of the amplification stages.
摘要翻译：一种用于保护射频功率放大器免受峰值漏极电压的电路和方法。检测器电路具有连接到功率放大器的放大级的功率晶体管的漏极的输入端，以从其检测峰值漏极电压。当检测到的峰值漏极电压超过预定的参考电平时，检测器电路输出保护信号。关断电路耦合到检测器电路并从其输入保护信号。保护信号用于去除功率放大器的至少一个放大级的栅极偏置。在检测器和保护电路中使用高频分量来立即降低来自一个或多个放大级的漏极电压。

6. 发明授权

US06725021B1 Method for tuning an envelope tracking amplification system 有权
标题翻译：调整包络跟踪放大系统的方法
公开(公告)号：US06725021B1
公开(公告)日：2004-04-20
申请号：US10175666
申请日：2002-06-20
申请人： Dale Anderson , James E. Mitzlaff
发明人： Dale Anderson , James E. Mitzlaff
IPC分类号： H03C162
CPC分类号： H03G3/004 , H03F1/0222 , H03F2200/102 , H03G3/007 , H03G3/3042
摘要： An optimal operating point of an envelope tracking amplification system that includes a radio frequency (RF) power amplifier having an RF amplifying element is determined based on an application to the RF power amplifier of a supply voltage that is less than the rated voltage of the RF amplifying element.
摘要翻译：包括具有RF放大元件的射频（RF）功率放大器的包络跟踪放大系统的最佳工作点基于对RF功率放大器的应用，该电源电压小于RF的额定电压放大元件。

7. 发明授权

US4717884A High efficiency RF power amplifier 失效
标题翻译：高效射频功率放大器
公开(公告)号：US4717884A
公开(公告)日：1988-01-05
申请号：US852045
申请日：1986-04-14
申请人： James E. Mitzlaff
发明人： James E. Mitzlaff
IPC分类号： H03F3/217 , H03F3/60
CPC分类号： H03F3/217 , H03F3/2176 , H03F2200/402
摘要： A high efficiency RF power amplifier is disclosed in which a field effect transistor is operated in a class F mode. A third harmonic quarterwave open circuit transmission line stub having a Z.sub.O adjusted to provide capacitance series resonant with transistor inductance at the second harmonic is coupled to the transistor output lead to produce a low impedance at the channel drain of the transistor. Parallel resonance of the transistor die capacitance and interconnect inductance coupled to ground by the transmission line produces a third harmonic high impedance at the channel drain. Further lowpass output matching circuitry provides a constantly increasing impedance magnitude from the transistor die to the load and provides load mismatch isolation to the second and third harmonic impedances at the channel drain.
摘要翻译：公开了一种高效率RF功率放大器，其中场效应晶体管以F类模式工作。具有ZO调节以提供在二次谐波处的晶体管电感的电容串联谐振的三次谐波四分之一波长开路传输线短路被耦合到晶体管输出引线，以在晶体管的沟道漏极处产生低阻抗。通过传输线耦合到地的晶体管管芯电容和互连电感的并联谐振在沟道漏极处产生三次谐波高阻抗。进一步的低通输出匹配电路提供从晶体管管芯到负载的不断增加的阻抗幅度，并且在沟道漏极处提供与第二和第三谐波阻抗的负载失配隔离。

8. 发明授权

US08159296B2 Method and apparatus for a power supply modulator linearizer 失效
标题翻译：电源调制器线性化电路的方法和装置
公开(公告)号：US08159296B2
公开(公告)日：2012-04-17
申请号：US12649453
申请日：2009-12-30
申请人： Enver Krvavac , Jeffrey A. Frei , James E. Mitzlaff
发明人： Enver Krvavac , Jeffrey A. Frei , James E. Mitzlaff
IPC分类号： H03F1/26 , H03F3/20
CPC分类号： H03F3/24 , H03F1/0227 , H03F3/195 , H03F2200/411 , H03F2200/504
摘要： A method and apparatus for a power amplifier module is described. The module includes a power amplifier and a power supply modulator coupled to the power amplifier. In addition, the module includes an inverter coupled between the power amplifier and the power supply modulator. The inverter provides a predistorted signal to the power amplifier to cancel distortion in the power amplifier provided by the power supply modulator. In addition, the module can include a driver coupled between the power amplifier and the inverter wherein the driver supplies the predistorted signal to the power amplifier.
摘要翻译：描述了功率放大器模块的方法和装置。该模块包括功率放大器和耦合到功率放大器的电源调制器。此外，该模块包括耦合在功率放大器和电源调制器之间的反相器。逆变器向功率放大器提供预失真信号以消除由电源调制器提供的功率放大器中的失真。此外，该模块可以包括耦合在功率放大器和逆变器之间的驱动器，其中驱动器将预失真信号提供给功率放大器。

9. 发明申请

US20080218271A1 RF POWER AMPLIFIER PROTECTION 失效
标题翻译：射频功率放大器保护
公开(公告)号：US20080218271A1
公开(公告)日：2008-09-11
申请号：US11683069
申请日：2007-03-07
申请人： James E. Mitzlaff , Joseph F. Robin
发明人： James E. Mitzlaff , Joseph F. Robin
IPC分类号： H03F1/52
CPC分类号： H04B1/0466 , H03F1/523
摘要： A circuit and method for protecting a radio frequency power amplifier against peak drain voltage. A detector circuit has an input connected to a drain of a power transistor of an amplification stage of the power amplifier to detect a peak drain voltage therefrom. The detector circuit outputs a protection signal when the detected peak drain voltage exceeds a predetermined reference level. A shutdown circuit is coupled to the detector circuit and inputs the protection signal therefrom. The protection signal is used to remove a gate bias of at least one amplification stage of the power amplifier. High frequency components are used in the detector and protection circuits to immediately reduce the drain voltage from one or more of the amplification stages.
摘要翻译：一种用于保护射频功率放大器免受峰值漏极电压的电路和方法。检测器电路具有连接到功率放大器的放大级的功率晶体管的漏极的输入端，以从其检测峰值漏极电压。当检测到的峰值漏极电压超过预定的参考电平时，检测器电路输出保护信号。关断电路耦合到检测器电路并从其输入保护信号。保护信号用于去除功率放大器的至少一个放大级的栅极偏置。在检测器和保护电路中使用高频分量来立即降低来自一个或多个放大级的漏极电压。

10. 发明授权

US07091781B2 Wideband feed forward linear power amplifier 有权
标题翻译：宽带前馈线性功率放大器
公开(公告)号：US07091781B2
公开(公告)日：2006-08-15
申请号：US10977455
申请日：2004-10-29
申请人： James E. Mitzlaff
发明人： James E. Mitzlaff
IPC分类号： H03F1/26
CPC分类号： H03F1/3223
摘要： A circuit is provided, having a feed forward linear power amplifier configured with two or more error correction loops (225–235, 255–265). Each of the error correction loops includes a band pass filter (237, 257). Each of the band pass filters (237, 257) is tuned to a different frequency range. A controllable frequency oscillator (220) can be coupled to an input of the error correction loops. A controller sweeps the frequency of the controllable frequency oscillator over the frequency range corresponding to each of the band pass filters (237, 257).
摘要翻译：提供了一种具有配置有两个或更多个纠错环路（225-235,255-265）的前馈线性功率放大器的电路。每个纠错环路包括带通滤波器（237,257）。每个带通滤波器（237,257）被调谐到不同的频率范围。可控频率振荡器（220）可耦合到纠错环路的输入端。控制器在对应于每个带通滤波器（237,257）的频率范围上扫描可控频率振荡器的频率。

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