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公开(公告)号：US08768343B2
公开(公告)日：2014-07-01
申请号：US11692250
申请日：2007-03-28
申请人： David S. Wisherd
发明人： David S. Wisherd
IPC分类号： H04W24/00
摘要： A wireless local area network (WLAN) includes a server and receiver, which includes a radio frequency (RF) front-end circuit that receives wireless signals from the mobile nodes within the WLAN and detects baseband signals. A signal waveform detector edge detects a signal waveform and generates a trigger signal indicative of the modulation type, data format and time-of-arrival (TOA) information of a desired signal to be captured. A baseband processor receives the trigger signal from the signal waveform detector and captures the desired signal. A system controller is connected to the baseband processor and configures the baseband processor for processing the desired signal and obtaining message data and signal metrics that are transferred to the system controller to be communicated outbound from the receiver as a client to the server.
摘要翻译： 无线局域网（WLAN）包括服务器和接收机，其包括从WLAN内的移动节点接收无线信号并检测基带信号的射频（RF）前端电路。 信号波形检测器边缘检测信号波形并产生指示要捕获的期望信号的调制类型，数据格式和到达时间（TOA）信息的触发信号。 基带处理器从信号波形检测器接收触发信号并捕获所需的信号。 系统控制器连接到基带处理器，并配置基带处理器，用于处理所需信号，并获取传送到系统控制器的消息数据和信号量度，作为客户端从接收器传出到服务器。
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公开(公告)号：US20120291304A1
公开(公告)日：2012-11-22
申请号：US13112880
申请日：2011-05-20
IPC分类号： F26B3/34
CPC分类号： F26B3/343 , D06F58/266 , F26B11/0495
摘要： A method for heating an object having a variable weight that includes a medium is provided. The method comprises: (A) placing the object having the variable weight including medium into an enclosure; (B) initiating a heating process by subjecting medium including the object having the variable weight to a variable AC electrical field; and (C) controlling the heating process. The object has substantially absorbed medium in a first “cool” state and therefore includes a maximum weight in the first “cool” state due to absorption of medium. The object is substantially free from medium in a second “heated” state due to substantial release of medium from the object, wherein the released medium is evaporated during the heating process. The heating process is completed when the object is substantially transitioned into the second “heated” state. The method further comprises using an air flow having an ambient temperature inside the enclosure to carry away the evaporated medium from the enclosure.
摘要翻译： 提供了一种用于加热具有包括介质的可变重量的物体的方法。 该方法包括：（A）将具有包括介质的可变重量的物体放置在外壳中; （B）通过对包含具有可变重量的物体的介质进行可变AC电场来启动加热过程; 和（C）控制加热过程。 该物体在第一冷却状态下基本上吸收介质，因此由于介质的吸收而包括在第一冷却状态下的最大重量。 由于介质从物体中的显着释放，物体在第二加热状态下基本上不含介质，其中释放的介质在加热过程中被蒸发。 当物体基本上转变到第二加热状态时，完成加热过程。 该方法还包括使用在外壳内具有环境温度的空气流将外部的蒸发介质带走。
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公开(公告)号：US07755541B2
公开(公告)日：2010-07-13
申请号：US12028894
申请日：2008-02-11
摘要： A location system for tracking assets within a terminal includes a Differential Global Positioning System (DGPS) reference receiver within the terminal that receives GPS signals and generates DGPS correction data. In one aspect, a roving receiver unit is carried by an asset to be tracked within the terminal. It includes a GPS receiver that receives GPS signals and the DGPS correction data from the DGPS reference receiver. A tag transmitter transmits a wireless RF signal containing GPS location data based on received GPS signals and DGPS correction data. At least one access point is positioned within the terminal for receiving the wireless RF signal from the tag transmitter. A processor is operatively connected to the at least one access point for receiving GPS location data and determining a location of the asset to be tracked.
摘要翻译： 用于跟踪终端内的资产的定位系统包括终端内的差分全球定位系统（DGPS）参考接收机，其接收GPS信号并产生DGPS校正数据。 在一个方面，粗纱接收机单元由在终端内跟踪的资产携带。 它包括GPS接收器，其接收来自DGPS参考接收机的GPS信号和DGPS校正数据。 标签发送器基于接收到的GPS信号和DGPS校正数据发送包含GPS位置数据的无线RF信号。 至少一个接入点位于终端内，用于从标签发射器接收无线RF信号。 处理器可操作地连接到所述至少一个接入点，用于接收GPS位置数据并确定要跟踪的资产的位置。
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公开(公告)号：US20080191937A1
公开(公告)日：2008-08-14
申请号：US12028894
申请日：2008-02-11
IPC分类号： G01S5/14
摘要： A location system for tracking assets within a terminal includes a Differential Global Positioning System (DGPS) reference receiver within the terminal that receives GPS signals and generates DGPS correction data. In one aspect, a roving receiver unit is carried by an asset to be tracked within the terminal. It includes a GPS receiver that receives GPS signals and the DGPS correction data from the DGPS reference receiver. A tag transmitter transmits a wireless RF signal containing GPS location data based on received GPS signals and DGPS correction data. At least one access point is positioned within the terminal for receiving the wireless RF signal from the tag transmitter. A processor is operatively connected to the at least one access point for receiving GPS location data and determining a location of the asset to be tracked.
摘要翻译： 用于跟踪终端内的资产的位置系统包括终端内的差分全球定位系统（DGPS）参考接收机，其接收GPS信号并产生DGPS校正数据。 在一个方面，粗纱接收机单元由在终端内跟踪的资产携带。 它包括GPS接收器，其接收来自DGPS参考接收机的GPS信号和DGPS校正数据。 标签发送器基于接收到的GPS信号和DGPS校正数据发送包含GPS位置数据的无线RF信号。 至少一个接入点位于终端内，用于从标签发射器接收无线RF信号。 处理器可操作地连接到所述至少一个接入点，用于接收GPS位置数据并确定要跟踪的资产的位置。
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公开(公告)号：US20070230424A1
公开(公告)日：2007-10-04
申请号：US11692250
申请日：2007-03-28
申请人： David S. Wisherd
发明人： David S. Wisherd
IPC分类号： H04Q7/24
摘要： A wireless local area network (WLAN) includes a server and receiver, which includes a radio frequency (RF) front-end circuit that receives wireless signals from the mobile nodes within the WLAN and detects baseband signals. A signal waveform detector edge detects a signal waveform and generates a trigger signal indicative of the modulation type, data format and time-of-arrival (TOA) information of a desired signal to be captured. A baseband processor receives the trigger signal from the signal waveform detector and captures the desired signal. A system controller is connected to the baseband processor and configures the baseband processor for processing the desired signal and obtaining message data and signal metrics that are transferred to the system controller to be communicated outbound from the receiver as a client to the server.
摘要翻译： 无线局域网（WLAN）包括服务器和接收机，其包括从WLAN内的移动节点接收无线信号并检测基带信号的射频（RF）前端电路。 信号波形检测器边缘检测信号波形并产生指示要捕获的期望信号的调制类型，数据格式和到达时间（TOA）信息的触发信号。 基带处理器从信号波形检测器接收触发信号并捕获所需的信号。 系统控制器连接到基带处理器，并配置基带处理器，用于处理所需信号，并获取传送到系统控制器的消息数据和信号量度，作为客户端从接收器传出到服务器。
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公开(公告)号：US5338974A
公开(公告)日：1994-08-16
申请号：US032227
申请日：1993-03-17
IPC分类号： H01L23/498 , H01L23/66 , H01L23/48
CPC分类号： H01L23/66 , H01L23/49844 , H01L24/49 , H01L2223/6644 , H01L2224/48091 , H01L2224/48237 , H01L2224/49175 , H01L24/48 , H01L2924/00014 , H01L2924/01033 , H01L2924/01082 , H01L2924/15787 , H01L2924/19042 , H01L2924/19043 , H01L2924/30107 , H01L2924/3011
摘要： An RF power transistor is mounted on a ceramic substrate with a plurality of input leads extending from one edge of the substrate, a plurality of output leads extending from an opposite edge of the substrate, a plurality of input ground leads with ground leads positioned between adjacent input leads, and a plurality of output ground leads with ground lead positioned between adjacent output leads. All ground leads are ohmically connected with the current paths between adjacent ground leads reduced in length.
摘要翻译： RF功率晶体管安装在陶瓷衬底上，具有从衬底的一个边缘延伸的多个输入引线，从衬底的相对边缘延伸的多个输出引线，多个输入接地引线，其中接地引线位于相邻的 输入引线和多个输出接地引线，其中接地引线位于相邻的输出引线之间。 所有接地引线与相邻接地引线之间的电流路径欧姆连接，长度减小。
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公开(公告)号：US5304959A
公开(公告)日：1994-04-19
申请号：US961995
申请日：1992-10-16
IPC分类号： H01P5/10
CPC分类号： H01P5/10
摘要： A planar balun including first and second spaced parallel elongated conductors on one surface of a ceramic, plastic, polymer, synthetic fiber or a composite substrate and a third elongated conductor on a second surface of the substrate opposite from the first and second conductors. The spacing from an outer edge of each of the first and second conductors to an outer edge of the third conductor being greater than the thickness of the ceramic substrate, and the spacing between the two parallel elongated conductors being greater than ##EQU1## The substrate is mounted on a metallic support plate which provides a ground plane spaced from the third conductor by a distance t2 in an atmosphere comprising air with the distance t2 being greater than ##EQU2## An input of the balun is at one end of the first and second conductors and an output of the balun is at the other end of the first and second conductors. One end of the third elongated conductor on the second surface is grounded to force a balance at the two outputs.
摘要翻译： 一种平面平衡 - 不平衡变换器，包括在陶瓷，塑料，聚合物，合成纤维或复合衬底的一个表面上的第一和第二间隔开的平行细长导体，以及在与第一和第二导体相对的衬底的第二表面上的第三细长导体。 从第一和第二导体中的每一个的外边缘到第三导体的外边缘的间隔大于陶瓷衬底的厚度，并且两个平行细长导体之间的间距大于（*化学结构*） 基板安装在金属支撑板上，该金属支撑板在距离t2大于（*化学结构*）的空气中提供与第三导体间隔距离t2的接地平面。平衡不平衡变换器的输入端在一端 的第一和第二导体，而平衡 - 不平衡变换器的输出位于第一和第二导体的另一端。 在第二表面上的第三细长导体的一端被接地以在两个输出端强制平衡。
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28.发明授权Solid state RF power amplifier having improved efficiency and reduced distortion 失效固态RF功率放大器具有改进的效率和减少的失真
公开(公告)号：US5027082A
公开(公告)日：1991-06-25
申请号：US517328
申请日：1990-05-01
IPC分类号： H01L25/00 , H01L21/8234 , H01L27/06 , H03F1/08 , H03F1/14 , H03F1/32 , H03F3/193 , H03F3/195
CPC分类号： H03F1/086 , H01L24/49 , H03F1/14 , H03F1/3241 , H03F3/193 , H01L2224/48091 , H01L2224/49175 , H01L2924/00014 , H01L2924/1305 , H01L2924/1306 , H01L2924/13062 , H01L2924/13091 , H01L2924/15787 , H01L2924/181 , H01L2924/30107 , H01L2924/3011
摘要： An RF power device including a DMOS field effect transistor has increased efficiency and reduced distortion. A capacitor is connected between the gate and source input of the transistor which swamps non-linear variations of the parasitic capacitance (C.sub.GD) between the gate and drain, thereby offsetting the Miller effect of the feedback provided by the MOS transistor parasitic capacitance. The capacitor, the Ciss of the MOS transistor, and the inductance of input leads provide a device input resonant frequency between the input signal fundamental frequency and the first harmonic.
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