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公开(公告)号：US11592515B2
公开(公告)日：2023-02-28
申请号：US16639213
申请日：2018-08-22
摘要： The present disclosure obtains a correction value that corrects measurement angle error signals more accurately than conventional methods even in a case where a radio wave signal-to-noise ratio is low, and thus tracks a communication counterpart more accurately than the conventional methods.
The present disclosure includes a program controller 28 that generates a command value of an orientation direction of an antenna 1 and outputs the generated command value to an antenna drive controller 27, the command value being changed in accordance with a predetermined change scenario 54; a correction value calculator 32 that calculates a phase correction value γ, based on at least three pieces of error measurement data 55 including (i) an arrival direction error obtained from a sum signal and a difference signal of reception signals, the arrival direction error representing a difference between the orientation direction and an arrival direction being a direction from which the radio waves come and arrive and (ii) an orientation direction actual measurement value being an actual measurement value of the orientation direction when the arrival direction error is obtained, the phase correction value γ being an angle by which the arrival direction error is rotated; and a tracking controller 33 that outputs, to the antenna drive controller 27, as the command value, a value obtained by adding the arrival direction error corrected based on the phase correction value γ to the orientation direction actual measurement value.-
公开(公告)号：US20200072936A1
公开(公告)日：2020-03-05
申请号：US16120008
申请日：2018-08-31
发明人： Richard E. Clymer
摘要： A process of screening direction finding solutions to reduce the number of valid direction finding solution rejections while maintaining an acceptable level of wild bearings being reported utilizing the proximity of the correlation values of the highest correlation and second highest correlation given a correlation pattern of a detected signal of unknown origin.
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公开(公告)号：US10476154B2
公开(公告)日：2019-11-12
申请号：US15301585
申请日：2015-08-05
摘要： Described embodiments provide sidelobe cancellation for Simultaneous Transmit and Receive systems. The sidelobe cancellation system includes an array having a primary aperture and an auxiliary array. The auxiliary array includes a plurality of antenna elements disposed adjacent to at least one side of the primary aperture. Each element of the auxiliary array is coupled to a variable attenuator, a variable phase shifter or a variable true time delay unit. A controller tunes the auxiliary array to cancel sidelobes of the primary aperture by adaptively selecting an attenuation value of the variable attenuator, a phase shift value of the variable phase shifter and a time delay value of the variable true time delay unit for each element of the auxiliary array. The auxiliary array operates as an adaptive finite-impulse response (FIR) filter with each antenna element of the auxiliary array operating as an adaptive tap of the adaptive FIR filter.
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公开(公告)号：US20190154790A1
公开(公告)日：2019-05-23
申请号：US16320624
申请日：2017-07-26
发明人： Sebastian Strunck
摘要： A method for determining a reception direction of a radio signal, wherein several antennas having different directional characteristics are used.
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公开(公告)号：US10224610B2
公开(公告)日：2019-03-05
申请号：US15501225
申请日：2014-10-24
发明人： Tianji Zheng , Minjia Xu
摘要： A mobile computing device antenna according to one example includes a folded monopole element, a ground plane coupled to the folded monopole element by an antenna feed, a parasitic element that couples the folded monopole element to the ground plane, and a metal frame that encompasses the folded monopole element, the ground plane, and the parasitic element, where the metal frame is coupled to the ground plane by a plurality of ground points.
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公开(公告)号：US08115679B2
公开(公告)日：2012-02-14
申请号：US12366335
申请日：2009-02-05
申请人： Kent Falk
发明人： Kent Falk
IPC分类号： G01S3/06
CPC分类号： H01Q3/2635 , G01S7/2813
摘要： Embodiments include a method to suppress side lobes of a main antenna by creating cancellation directions using a Side Lobe Canceller (SLC). Various embodiments also provide the Side Lobe Canceller.
摘要翻译： 实施例包括通过使用边框消除器（SLC）创建消除方向来抑制主天线的旁瓣的方法。 各种实施例还提供了边框消除器。
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公开(公告)号：US5666662A
公开(公告)日：1997-09-09
申请号：US278516
申请日：1994-07-21
申请人： Toshiyuki Shibuya
发明人： Toshiyuki Shibuya
摘要： In location detection of a mobile terminal, a location inquiry signal is transmitted from one or more base stations to the mobile terminal at predetermined intervals. In response to the location inquiry signal, the mobile terminal transmits a location signal including its identification information such as a telephone number. The location signal is received by at least three base stations neighboring to the mobile terminal. The respective distances from that base stations to the mobile terminal are calculated based on the respective field strength values of the location signal received by the base stations, and the location of the mobile terminal is detected based on the calculated distances. More specifically, the location is calculated as an intersection of the respective circles defined by radiuses of the calculated distances from the base stations receiving the location signal.
摘要翻译： 在移动终端的位置检测中，位置查询信号以预定间隔从一个或多个基站发送到移动终端。 响应于位置查询信号，移动终端发送包括其电话号码等识别信息的位置信号。 位置信号由与移动终端相邻的至少三个基站接收。 基于由基站接收的位置信号的各自的场强值来计算从基站到移动终端的相应距离，并且基于计算出的距离来检测移动终端的位置。 更具体地说，该位置被计算为由接收位置信号的基站计算出的距离的半径所定义的各圆的交点。
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公开(公告)号：US5434576A
公开(公告)日：1995-07-18
申请号：US200618
申请日：1994-02-23
申请人： Randy L. Haupt
发明人： Randy L. Haupt
CPC分类号： H01Q21/22 , G01S3/06 , G01S7/2813
摘要： A method for economically producing low sidelobe levels in the far field pattern of an array antenna is disclosed. The current fed to the subarrays is identically tapered to the elements of each subarray. Both the subarray current taper and the element current tapers are optimized to yield the lowest possible sidelobe levels.
摘要翻译： 公开了一种用于在阵列天线的远场图案中经济地产生低旁瓣电平的方法。 馈送到子阵列的电流与每个子阵列的元素相同地渐变。 子阵列当前锥度和元件电流锥度都被优化以产生尽可能低的旁瓣电平。
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9.发明授权Signal processor for elimination of sidelobe responses and generation of error signals 失效用于消除旁瓣响应和产生误差信号的信号处理器
公开(公告)号：US5339284A
公开(公告)日：1994-08-16
申请号：US914624
申请日：1992-07-17
申请人： Julius A. Kaiser
发明人： Julius A. Kaiser
CPC分类号： H01Q3/2611 , G01S3/06 , G01S3/38 , Y10S367/905
摘要： A signal processor eliminates sidelobe response from signals produced by a spaced antenna array that forms a single beam using spatial frequencies. The signal processor also produces error signals. The signal processor uses a phase coherent local oscillator to simultaneously convert the wavefront signal from each element of the antenna array to three different first intermediate frequency signals IF. The first IF signals of each element are cross-correlated with the first IF signals from each of the other array elements to form the signals containing sampled spatial frequency components IF.sub.2. Cross-correlating a second time using the sampled spatial frequencies as inputs produces signals containing derived spatial frequency components IF.sub.3. The signals containing derived spatial frequency components are synchronously detected (phase compared) and summed to provide a single beam output signal. The summed output signal passes through a linear peak detector biased to the peak of the largest even sidelobe such that only signals within the main beam and above the bias level appear in the final output. The derived spatial frequencies are also phase shifted by 90.degree. and detected signals containing "imaginary" spatial frequency components. The sum of the signals with imaginary components represents an error pattern. Also, summation of the signals with imaginary components for the odd order spatial frequency harmonics produces an error signal approximating a signum function of the angle of incidence of the incoming wavefront.
摘要翻译： 信号处理器消除由间隔天线阵列产生的信号的旁瓣响应，该天线阵列使用空间频率形成单个波束。 信号处理器还产生错误信号。 信号处理器使用相位相干本地振荡器来将来自天线阵列的每个元件的波前信号同时转换成三个不同的第一中频信号IF。 每个元件的第一IF信号与来自每个其他阵列元件的第一IF信号互相关，以形成包含采样的空间频率分量IF2的信号。 使用采样的空间频率作为输入进行第二次互相关，产生包含导出的空间频率分量IF3的信号。 包含导出的空间频率分量的信号被同步检测（相位比较）并相加以提供单个波束输出信号。 相加的输出信号通过偏置到最大偶数旁瓣的峰值的线性峰值检测器，使得仅主信号中的信号和偏置电平之上的信号出现在最终输出端。 导出的空间频率也相移90°，检测信号包含“虚拟”空间频率分量。 具有虚部的信号之和表示错误模式。 此外，对于奇数阶空间频率谐波的具有虚分量的信号的求和产生近似入射波阵面的入射角的符号函数的误差信号。
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公开(公告)号：US5144320A
公开(公告)日：1992-09-01
申请号：US833259
申请日：1992-02-10
CPC分类号： G01S3/06 , H01Q13/206 , H01Q3/24
摘要： An antenna array includes several antenna elements, each having a microstrip transmission line which includes a strip conductor and a ground plane conductor separated by a dielectric substrate; an antenna portion of the substrate being adapted to enable energy within the substrate to radiate away from the microstrip transmission line. The substrate may have greater capacitance at the antenna portion than other portions of the substrate. The antenna portion is adapted to permit RF energy to the microstrip transmission line to be directionally radiated away from the microstrip transmission line at the antenna portion, the direction of radiation being a function of the frequency of the supplied energy and the antenna slot separation. The individual antenna elements are connected, preferably in pairs, to switching elements, preferably microstrip-type circulators, providing a switchable transmission path from an RF input to a selected antenna element. Each antenna element preferably provides a different radiated beam direction in response to a given input frequency. A desired beam direction can be selected by selecting a corresponding antenna element by means of the switching elements. Thus, by sequentially switching from one antenna to the next, electronic beam scanning can be accomplished without changing the frequency of the RF input.
摘要翻译： 天线阵列包括几个天线元件，每个天线元件具有微带传输线，该微带传输线包括条形导体和由电介质衬底隔开的接地平面导体; 衬底的天线部分适于使衬底内的能量远离微带传输线辐射。 衬底在天线部分可以具有比衬底的其它部分更大的电容。 天线部分适于允许微波传输线的RF能量被定向辐射离开天线部分处的微带传输线，辐射方向是所提供能量的频率和天线槽分离的函数。 各个天线元件优选地成对地连接到开关元件，优选微带型循环器，提供从RF输入到所选天线元件的可切换传输路径。 每个天线元件优选地响应于给定的输入频率提供不同的辐射波束方向。 可以通过通过开关元件选择相应的天线元件来选择期望的波束方向。 因此，通过从一个天线依次切换到下一个天线，可以在不改变RF输入的频率的情况下实现电子束扫描。
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