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    • 121. 发明申请
    • ANTENNA ARCHITECTURE FOR MAINTAINING BEAM SHAPE IN A RECONFIGURABLE ANTENNA
    • 用于在可重复天线中保持波束形状的天线架构
    • US20130235806A1
    • 2013-09-12
    • US13885653
    • 2010-11-15
    • Andreas NilssonPatrik PerssonSven Petersson
    • Andreas NilssonPatrik PerssonSven Petersson
    • H04B7/04
    • H04B7/0408H01Q1/246H01Q3/22H01Q3/30H01Q5/50H01Q21/22H04B1/005H04B1/0057H04B1/006H04B1/0067
    • A node in a wireless communication system comprising an antenna array with at least a first antenna function and a second antenna function. The node further comprises a first radio chain and a second radio chain, where each antenna function is connected to a base band via a corresponding radio chain. Each radio chain comprises an oscillator, a splitter and a multiplexer, each oscillator being arranged to feed a signal with a unique frequency band to the splitter in the same radio chain. The splitter is arranged to divide the signal into at least two signal parts and feed each part to the multiplexer of each radio chain such that each multiplexer in the node receives signal parts from each splitter in the node. The splitter is arranged to weight the division of the signal into the signal parts in dependence of the frequency bands fed by each oscillator.
    • 包括具有至少第一天线功能和第二天线功能的天线阵列的无线通信系统中的节点。 节点还包括第一无线电链和第二无线电链,其中每个天线功能经由相应的无线电链路连接到基带。 每个无线电链包括振荡器,分离器和多路复用器,每个振荡器被布置成将具有唯一频带的信号馈送到相同无线电链中的分路器。 分配器被布置成将信号分成至少两个信号部分,并且将每个部分馈送到每个无线电链的多路复用器,使得节点中的每个多路复用器从节点中的每个分离器接收信号部分。 分配器被布置为根据由每个振荡器馈送的频带来加权信号到信号部分的分割。
    • 122. 发明授权
    • Base station having a set of phased array antennas
    • 基站具有一组相控阵天线
    • US08462876B2
    • 2013-06-11
    • US12546102
    • 2009-08-24
    • Donald L. Schilling
    • Donald L. Schilling
    • H04L27/00
    • H04B7/0894G01S3/42H01Q3/22H01Q3/26H01Q3/2605H01Q3/2682H04B1/1081H04B1/69H04B1/707H04B7/084H04L1/06
    • A wireless communications handset configured to receive a multipath spread spectrum signal comprises a first antenna and a second antenna. A first receiver is coupled to the first antenna and a second receiver is coupled to the second antenna. A delay device is coupled to the first receiver and delays the portion of the multipath signal received by the first antenna. The delayed signal and the in-phase portion of the signal are then combined in a combining device. A despreader coupled to the combining devices generates a magnitude value of the combined signal. The current magnitude value is then compared to one or more previous magnitude values to determine if the delay should be increased or decreased. A comparison device outputs a comparison signal based on the current and previous magnitude values and provides the comparison signal to the delay device to adjust the delay appropriately.
    • 被配置为接收多径扩频信号的无线通信手机包括第一天线和第二天线。 第一接收机耦合到第一天线,第二接收机耦合到第二天线。 延迟装置耦合到第一接收机并且延迟由第一天线接收的多径信号的部分。 信号的延迟信号和同相部分然后在组合装置中组合。 耦合到组合装置的解扩器产生组合信号的幅度值。 然后将当前幅度值与一个或多个先前的幅度值进行比较,以确定延迟是否应当增加或减小。 比较装置基于当前和先前的幅值输出比较信号,并将比较信号提供给延迟装置以适当地调整延迟。
    • 123. 发明申请
    • METAMATERIAL-BASED DIRECTION-FINDING ANTENNA SYSTEMS
    • 基于METAMATERIAL的方向寻找天线系统
    • US20120229339A1
    • 2012-09-13
    • US13045014
    • 2011-03-10
    • J. AIDEN HIGGINS
    • J. AIDEN HIGGINS
    • G01S3/04
    • G01S3/40G01S3/04G01S3/16H01Q1/38H01Q3/22H01Q3/44H01Q15/0086
    • Method embodiments are disclosed to determine arrival directions of electromagnetic signals that have a known signal frequency and a known guided signal wavelength. These methods are realized with an antenna configured to define, at the signal frequency, at least one metamaterial cell between first and second signal ports. They then include the step of rotating the antenna until the differential power from the first and second signal ports is substantially zero and then determining the arrival direction as a normal to the metamaterial cell. In other method embodiments, the antenna is stationary and a differential power is determined wherein the differential power is defined as the difference between received powers from the first and second ports. The arrival direction of electromagnetic signals are then determined from the differential power.
    • 公开了确定具有已知信号频率和已知的导向信号波长的电磁信号的到达方向的方法实施例。 这些方法通过配置成在信号频率处限定第一和第二信号端口之间的至少一个超材料单元的天线来实现。 然后,它们包括旋转天线的步骤,直到来自第一和第二信号端口的差分功率基本为零,然后确定到达方向为超材料单元的法线。 在其他方法实施例中,天线是静止的,并且确定差分功率,其中差分功率被定义为来自第一和第二端口的接收功率之间的差。 然后根据差分功率确定电磁信号的到达方向。
    • 126. 发明授权
    • Frequency scanning radar system
    • 频率扫描雷达系统
    • US07956799B2
    • 2011-06-07
    • US12793783
    • 2010-06-04
    • David Spreadbury
    • David Spreadbury
    • G01S13/00
    • G01S7/4008G01S13/227G01S13/24G01S13/343G01S13/426H01Q3/22H01Q25/00
    • A frequency scanning radar system includes a controller for controlling a frequency generator and a signal processor arranged to determine a Doppler frequency associated with a target. The frequency generator generates three or more sets of signals, each set of signals having a different characteristic frequency and including signals transmitted at a selected rate, and the radar controller selects the rate in substantially direct proportion to the characteristic frequency, whereby to normalize the Doppler frequency determined by the signal processor, such that the normalized Doppler frequency is substantially constant in relation to variation in the carrier frequency. In a frequency modulated radar system, each set of signals includes a sequence of modulation patterns, and the radar controller modifies a given modulation pattern in dependence on the characteristic frequency of the signal being modulated.
    • 频率扫描雷达系统包括用于控制频率发生器的控制器和布置成确定与目标相关联的多普勒频率的信号处理器。 频率发生器产生三组或更多组信号,每组信号具有不同的特征频率并且包括以选定速率发射的信号,并且雷达控制器以基本上与特征频率成正比的速率选择速率,从而归一化多普勒 频率由信号处理器确定,使得归一化的多普勒频率相对于载波频率的变化基本上是恒定的。 在频率调制雷达系统中,每组信号包括一系列调制模式,并且雷达控制器根据被调制的信号的特征频率修改给定的调制模式。
    • 127. 发明申请
    • DOPPLER RADAR SYSTEMS
    • 多普勒雷达系统
    • US20100245161A1
    • 2010-09-30
    • US12793783
    • 2010-06-04
    • David Spreadbury
    • David Spreadbury
    • G01S13/00
    • G01S7/4008G01S13/227G01S13/24G01S13/343G01S13/426H01Q3/22H01Q25/00
    • A frequency scanning radar system includes a controller for controlling a frequency generator and a signal processor arranged to determine a Doppler frequency associated with a target. The frequency generator generates three or more sets of signals, each set of signals having a different characteristic frequency and including signals transmitted at a selected rate, and the radar controller selects the rate in substantially direct proportion to the characteristic frequency, whereby to normalize the Doppler frequency determined by the signal processor, such that the normalized Doppler frequency is substantially constant in relation to variation in the carrier frequency. In a frequency modulated radar system, each set of signals includes a sequence of modulation patterns, and the radar controller modifies a given modulation pattern in dependence on the characteristic frequency of the signal being modulated.
    • 频率扫描雷达系统包括用于控制频率发生器的控制器和布置成确定与目标相关联的多普勒频率的信号处理器。 频率发生器产生三组或更多组信号,每组信号具有不同的特征频率并且包括以选定速率发射的信号,并且雷达控制器以基本上与特征频率成正比的速率选择速率,从而归一化多普勒 频率由信号处理器确定,使得归一化的多普勒频率相对于载波频率的变化基本上是恒定的。 在频率调制雷达系统中,每组信号包括一系列调制模式,并且雷达控制器根据被调制的信号的特征频率修改给定的调制模式。
    • 128. 发明授权
    • Antenna device
    • 天线设备
    • US07710339B2
    • 2010-05-04
    • US12153142
    • 2008-05-14
    • Ola Forslund
    • Ola Forslund
    • H01Q13/02
    • H01Q15/0006H01Q3/22H01Q3/2611H01Q3/46H01Q13/0225H01Q13/025H01Q13/0275H01Q13/06H01Q15/148H01Q19/022H01Q19/132
    • An antenna device including a reflectarray with array antenna elements, and an outer feed provided with a waveguide and a widening funnel which in a widened end carries a waveguide aperture for illumination of the reflectarray. The antenna device eliminates or at least reduces a position dependence of an antenna lobe with respect to frequency. Furthermore, the antenna device presents a low monostatic radar cross section and compactness. To this end the antenna device is fed offset and is provided with a device for movement of a phase center of the antenna with a frequency relative to the waveguide aperture of the feed in the vicinity of the waveguide aperture.
    • 一种包括具有阵列天线元件的反射阵列的天线装置,以及设置有波导和扩宽漏斗的外部馈电,所述扩展漏斗在加宽端承载用于照射反射阵列的波导孔。 天线装置消除或至少减小天线波瓣相对于频率的位置依赖性。 此外,天线装置呈现低的单稳态雷达截面和紧凑性。 为此,天线装置被馈送偏移并且设置有用于以相对于波导孔附近的馈电的波导孔的频率移动天线的相位中心的装置。
    • 129. 发明申请
    • RADAR SYSTEM
    • 雷达系统
    • US20090273505A1
    • 2009-11-05
    • US12503377
    • 2009-07-15
    • Graham PearsonSteve GreendaleDavid Spreadbury
    • Graham PearsonSteve GreendaleDavid Spreadbury
    • G01S13/62
    • G01S7/4008G01S13/227G01S13/24G01S13/343G01S13/426H01Q3/22H01Q25/00
    • A scanning radar system suitable for detecting and monitoring ground-based targets includes a frequency generator, a frequency scanning antenna, and a receiver arranged to process signals received from a target so as to identify a Doppler frequency associated with the target. The frequency generator generates sets of signals, each set having a different characteristic frequency, and includes a digital synthesiser arranged to modulate a continuous wave signal of a given characteristic frequency by a sequence of modulation patterns to generate one set of signals. The frequency scanning antenna cooperates with the frequency generator to transceive radiation over a region having an angular extent dependent on the generated frequencies. Digital synthesiser techniques capable of precise frequency generation and control are combined with passive frequency scanning and Doppler processing techniques, enabling accurate control of range and scan rates, and optimisation of range cell size for factors such as slow and fast target detection and Signal to Noise ratio, so that targets can be detected at distances considerably farther away than is possible with known systems having similar power requirements.
    • 适用于检测和监测地面目标的扫描雷达系统包括频率发生器,频率扫描天线和布置成处理从目标接收的信号的接收机,以识别与目标相关联的多普勒频率。 频率发生器产生每组具有不同特征频率的信号集合,并且包括数字合成器,其被布置成通过一系列调制模式来调制给定特征频率的连续波信号,以产生一组信号。 频率扫描天线与频率发生器协作以在具有取决于所产生的频率的角度范围的区域上收发辐射。 具有精确频率发生和控制的数字合成器技术与被动频率扫描和多普勒处理技术相结合,能够精确控制范围和扫描速率,并优化范围单元尺寸,用于诸如慢速和快速目标检测以及信噪比 ,因此可以在比具有类似功率要求的已知系统可能远的距离处检测目标。
    • 130. 发明授权
    • On-line phase noise measurement for layered modulation
    • 用于分层调制的在线相位噪声测量
    • US07463676B2
    • 2008-12-09
    • US10692539
    • 2003-10-24
    • Ernest C. Chen
    • Ernest C. Chen
    • H04Q1/20H04B17/00
    • H04N17/00H01Q3/22H04B17/345
    • A method and apparatus for measuring the phase noise of an low noise block (LNB) and other devices while the device under test is on line is disclosed. Using a signal processing procedure over a short duration of a received signal, the technique demodulates the signal to expose the phase history of the underlying carrier for measurement. In an exemplary apparatus timing and carrier recovery on A/D samples are performed conventionally, a linear phase is estimated from minimum mean square fitting to the recovered carrier phase history, the single tone carrier is removed from the recovered phase to yield a residual phase. A fast Fourier transform (FFT) can be performed on the residual phase to produce a phase noise spectral measurement at an input of the demodulator.
    • 公开了一种在被测设备在线时测量低噪声块(LNB)和其他设备的相位噪声的方法和装置。 在接收信号的短时间内使用信号处理过程,该技术解调信号以暴露用于测量的底层载波的相位历史。 在示例性设备中,常规地执行A / D样本的定时和载波恢复,从最小均方拟合到恢复的载波相位历史估计线性相位,从恢复的相位移除单个音调载波以产生残余相位。 可对剩余相位执行快速傅里叶变换(FFT),以在解调器的输入端产生相位噪声频谱测量。