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公开(公告)号：US20120256778A1
公开(公告)日：2012-10-11
申请号：US10612741
申请日：2003-07-02
CPC分类号： G01S7/2928 , G01S13/931 , G01S2013/9314 , G01S2013/9317 , G01S2013/9321 , G01S2013/9325 , G01S2013/9332 , G01S2013/9375 , G01S2013/9378 , G01S2013/9385
摘要： Short-range vehicular radar systems are described. In one implementation, an apparatus used in radar applications includes a programmable digital receiver having an adaptable interference filter that is configured to reject radar pulses received from another radar system. In another implementation, a short-range vehicular radar system includes receive and transmission antennae, a programmable delay generator, and programmable receiver. The programmable delay generator is configured to control transmission of pulses from the transmission antenna at randomly selected times to prevent ambiguities associated with target objects that are distances away from the transmission antenna that are greater than the speed of light times the pulse repetition rate divided by two. The programmable receiver is calibrated to sample signals received by the receive antenna relative to when the pulses are emitted from the transmission antenna.
摘要翻译： 描述了近程车辆雷达系统。 在一个实现中，用于雷达应用的装置包括具有可适应干扰滤波器的可编程数字接收机，其被配置为拒绝从另一个雷达系统接收的雷达脉冲。 在另一实现中，短程车载雷达系统包括接收和发射天线，可编程延迟发生器和可编程接收机。 可编程延迟发生器被配置成在随机选择的时间控制来自发射天线的脉冲的传输，以防止与远离发射天线的距离大于光速的脉冲重复频率除以2的目标物体的模糊度 。 可编程接收器被校准以对接收天线相对于从发射天线发射脉冲时接收到的信号进行采样。
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2.发明授权公开(公告)号：US07545865B2
公开(公告)日：2009-06-09
申请号：US10308593
申请日：2002-12-03
申请人： David Bengtson
发明人： David Bengtson
IPC分类号： H04L27/00
CPC分类号： H03C3/0991 , H03C3/0925 , H03C3/0933
摘要： An apparatus for electromagnetic processing comprises a modulator for generating one or more elements representative of an input signal; a divider controlled by the one or more elements and receiving an electromagnetic wave to generate a modified signal; a comparator for comparing the modified signal to a reference signal and for generating a processed signal based upon the comparison; and a channel number calculator for selecting a channel for the processed signal, wherein the input signal incorporated the channel selection.
摘要翻译： 一种用于电磁处理的装置包括用于产生表示输入信号的一个或多个元件的调制器; 由所述一个或多个元件控制的并且接收电磁波以产生修改信号的分频器; 比较器，用于将修改的信号与参考信号进行比较，并用于基于该比较产生处理的信号; 以及频道号计算器，用于选择处理信号的频道，其中输入信号包含频道选择。
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公开(公告)号：US20080228292A1
公开(公告)日：2008-09-18
申请号：US11717486
申请日：2007-03-12
申请人： Ajit Kumar Reddy
发明人： Ajit Kumar Reddy
IPC分类号： G05B13/02
CPC分类号： G05B21/02
摘要： A method for pre-distorting an input for a device is provided. A partial set of known data pairs is acquired during a closed-loop device calibration period. The partial set of known data pairs is searched for at least one missing data pair, and at least one data value is interpolated for the missing data pair. An augmented set of data pairs, including the known data pairs and the interpolated data value, is stored in a lookup table. During an open-loop operation period subsequent to the closed-loop device calibration period, the device input is pre-distorted based on the augmented set of data pairs stored in the lookup table.
摘要翻译： 提供了一种用于对设备的输入进行预失真的方法。 在闭环设备校准周期期间获取部分已知数据对的集合。 搜索部分已知数据对集合中的至少一个丢失数据对，并为缺失的数据对内插至少一个数据值。 包括已知数据对和内插数据值的增强数据集合被存储在查找表中。 在闭环设备校准周期之后的开环操作期间，设备输入基于存储在查找表中的增加的数据组集合被预失真。
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公开(公告)号：US07420512B2
公开(公告)日：2008-09-02
申请号：US11195306
申请日：2005-08-02
申请人： Matthew Lannon , Clyde Callewaert
发明人： Matthew Lannon , Clyde Callewaert
CPC分类号： H01Q21/24 , H01Q9/0428 , H01Q9/0492 , H01Q21/065 , H01Q21/28 , H01Q21/30 , H01Q25/005
摘要： An antenna system for a radio frequency identification system comprising: (a) a base; (b) a first patch antenna disposed on the base and having a circular polarization and adapted to convert between electrical signals and electromagnetic fields; and (c) a second patch antenna disposed on the base and having a circular polarization and adapted to convert between electrical signals and electromagnetic fields, the second antenna being disposed at a distance from the first antenna to define a region between the first and the antenna, the second patch antenna being positioned relative to the first patch antenna such that the electromagnetic fields of the two antennas are substantially opposing in the region.
摘要翻译： 1.一种用于射频识别系统的天线系统，包括：（a）基座; （b）第一贴片天线，其设置在所述基座上并具有圆偏振并适于在电信号和电磁场之间转换; 和（c）设置在基座上并具有圆偏振并适于在电信号和电磁场之间转换的第二贴片天线，第二天线设置在离第一天线一定距离处以限定第一和天线之间的区域 ，所述第二贴片天线相对于所述第一贴片天线定位，使得所述两个天线的电磁场在所述区域中基本相反。
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公开(公告)号：US07417513B2
公开(公告)日：2008-08-26
申请号：US11208237
申请日：2005-08-17
IPC分类号： H03C3/06
CPC分类号： H03L7/1976 , H03C3/0925 , H03C3/0933 , H03L7/093
摘要： A system and method for modulating a phase component of an electromagnetic signal includes a phase/frequency detector having first and second inputs and an output. The first phase/frequency detector input may be configured to receive a reference signal. The system may include an oscillator having an input and an output. The oscillator may be configured to generate a desired oscillator output signal at its output. A divider may be configured to receive the oscillator output signal. The divider may have a divider count input and a divider carryout output that may be connected to the second phase/frequency detector input. A loop filter may be connected in series between the phase/frequency detector output and the oscillator input. The loop filter has a transfer function including at least two frequency response rate change points, where each of the frequency rate change points corresponds to a pole or a zero in the transfer function.
摘要翻译： 用于调制电磁信号的相位分量的系统和方法包括具有第一和第二输入和输出的相位/频率检测器。 第一相/频率检测器输入可以被配置为接收参考信号。 该系统可以包括具有输入和输出的振荡器。 振荡器可以被配置为在其输出端产生期望的振荡器输出信号。 分频器可以被配置为接收振荡器输出信号。 分频器可以具有分频器计数输入和可以连接到第二相位/频率检测器输入的分频器输出输出。 环路滤波器可以串联连接在相位/频率检测器输出和振荡器输入之间。 环路滤波器具有包括至少两个频率响应速率变化点的传递函数，其中每个频率变化点对应于传递函数中的极点或零点。
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公开(公告)号：US07411560B2
公开(公告)日：2008-08-12
申请号：US11537616
申请日：2006-09-30
IPC分类号： H01Q21/00
摘要： An apparatus includes a monopole extending substantially along an axis that may be vertical. However, the monopole may have a loop portion that deviates from the axis. Further, the apparatus includes multiple conductive elements, each having a substantially linear first segment that is coupled to the monopole. The first segments may be coplanar and/or perpendicular to the axis. Each of the conductive elements may further include a second segment that is substantially parallel to the axis. One or more of these segments may be connected to a ground potential. Also, the conductive elements may each include a third segment having a loop pattern.
摘要翻译： 一种装置包括基本沿着可垂直的轴线延伸的单极子。 然而，单极可以具有偏离轴的环部分。 此外，该装置包括多个导电元件，每个导电元件具有耦合到单极子的基本线性的第一片段。 第一段可以是共面的和/或垂直于轴。 每个导电元件还可以包括基本上平行于轴线的第二段。 这些段中的一个或多个可以连接到地电位。 此外，导电元件可以各自包括具有环形图案的第三片段。
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公开(公告)号：US20080157896A1
公开(公告)日：2008-07-03
申请号：US11618369
申请日：2006-12-29
申请人： Inder Jit Bahl
发明人： Inder Jit Bahl
CPC分类号： H03G11/025 , H01P5/028
摘要： The invention provides a novel broadband power limiter having improved frequency characteristics and power capacity, suitable for use with GaAs low-noise amplifier circuits. The power limiter includes a shunt diode circuit and two impedance transformers. The first transformer is a step-down impedance transformer connected between the shunt diode circuit and the input to the limiter, and the second transformer is a step-up impedance transformer connected between the shunt diode circuit and the output of the limiter. The invention further provides a method for limiting the power of an input signal, comprising the steps of: transforming the input signal from the input impedance to an intermediate impedance; shunting a portion of the input signal to ground; and transforming a remaining portion of the input signal from the intermediate impedance to an output impedance. The invention further provides a novel impedance transformer suitable for use in the broadband power limiter and a method for providing such an impedance transformer.
摘要翻译： 本发明提供了具有改进的频率特性和功率容量的新型宽带功率限制器，适用于GaAs低噪声放大器电路。 功率限制器包括并联二极管电路和两个阻抗变压器。 第一变压器是连接在并联二极管电路和限幅器的输入端之间的降压阻抗变压器，第二变压器是连接在并联二极管电路和限幅器输出端之间的升压阻抗变换器。 本发明还提供一种限制输入信号功率的方法，包括以下步骤：将输入信号从输入阻抗变换成中间阻抗; 将输入信号的一部分分流到地; 以及将来自中间阻抗的输入信号的剩余部分变换为输出阻抗。 本发明还提供一种适用于宽带功率限制器的新型阻抗变压器和一种用于提供这种阻抗变压器的方法。
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8.发明授权公开(公告)号：US07392021B2
公开(公告)日：2008-06-24
申请号：US11196371
申请日：2005-08-03
申请人： Nitin Jain , Rajanish , Angelos Alexanian
发明人： Nitin Jain , Rajanish , Angelos Alexanian
CPC分类号： H03F3/189 , H03G3/3042 , H04B2001/0416
摘要： Apparatus, system, and method including a circuit including an element having an electrical impedance, an input node to receive a signal, and an output node to couple to a load; a sensing circuit coupled to the input node and the output node to sense a differential voltage between the input and output nodes and to sense a detected voltage at the input node; and a multiplier circuit to receive the differential voltage and to receive the detected voltage. The multiplier circuit provides an output voltage proportional to the instantaneous power delivered to the load based on the differential voltage, the detected voltage, and the impedance of the element. A system may further include a radio frequency (RF) power amplifier (PA). A method may further include controlling a gain of the RF PA to maintain the power delivered to the load at a predetermined level based on the output voltage of the multiplier circuit.
摘要翻译： 装置，系统和方法包括包括具有电阻抗的元件的电路，用于接收信号的输入节点和耦合到负载的输出节点; 感测电路，其耦合到所述输入节点和所述输出节点，以感测所述输入和输出节点之间的差分电压并且感测所述输入节点处的检测到的电压; 以及用于接收差分电压并接收检测到的电压的乘法器电路。 乘法器电路提供与基于差分电压，检测电压和元件的阻抗而传递给负载的瞬时功率成比例的输出电压。 系统还可以包括射频（RF）功率放大器（PA）。 方法还可以包括控制RF PA的增益，以基于乘法器电路的输出电压将输送到负载的功率保持在预定电平。
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9.发明申请Method and Apparatus For Discriminating With Respect to Low Elevation Target Objects 有权用于鉴别低海拔目标物体的方法和装置公开(公告)号：US20080111733A1
公开(公告)日：2008-05-15
申请号：US11560196
申请日：2006-11-15
IPC分类号： G01S13/00
CPC分类号： G01S13/931 , G01S7/412 , G01S13/42 , G01S2013/462 , G01S2013/466 , G01S2013/9325
摘要： The invention concerns a method and apparatus for estimating a height of a target object using radar signals reflected from the target object wherein a receiver detects a plurality of radar signals reflected from the target object, respectively, at a plurality of different ranges, resolves the amplitudes of the plurality of reflected signals at the respective plurality of different ranges to generate an amplitude data set, and determining if the amplitude data set correlates to a particular height.
摘要翻译： 本发明涉及一种用于使用从目标物体反射的雷达信号来估计目标物体的高度的方法和装置，其中接收机分别在多个不同的范围上分别检测从目标物体反射的多个雷达信号，从而分辨振幅 在多个不同范围的多个反射信号中生成振幅数据集，并且确定振幅数据集是否与特定高度相关。
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公开(公告)号：US20080095085A1
公开(公告)日：2008-04-24
申请号：US11550649
申请日：2006-10-18
申请人： Paul Goodjohn
发明人： Paul Goodjohn
IPC分类号： H04B7/00
摘要： An embodiment is a radio system including a primary radio site and one or more fully redundant hot standby radio sites that may be activated in the event of a catastrophic failure of the primary radio site. In an embodiment, a hot standby radio site may be activated automatically to substantially avoid the radio service restoration delay that would accompany, for example, manual initiation of the failover to the hot standby radio site.
摘要翻译： 一个实施例是一种无线电系统，其包括主无线电站点和一个或多个完全冗余的热备用无线电站点，其可在主无线电站点的灾难性故障的情况下被激活。 在一个实施例中，可以自动激活热备用无线电站点，以便基本上避免伴随例如手动启动到热备用无线电站点的故障转移的无线电服务恢复延迟。
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