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公开(公告)号：US12113288B2
公开(公告)日：2024-10-08
申请号：US17356766
申请日：2021-06-24
Applicant: Silicon Laboratories Inc.
Inventor： Terry Lee Dickey , Attila Zólomy , Adám Süle , Sauli Lehtimaki , Szabolcs Lörincz
CPC classification number: H01Q21/24 , G01S3/08 , H01Q15/244 , H01Q15/246 , H01Q21/245
Abstract: A system and method for selecting a polarization for a particular antenna in an antenna array is disclosed. The system comprises an antenna array, wherein each antenna is adapted to receive and transmit horizontally and vertically polarized signals. The system also includes a switching network that is adapted to select the vertical or horizontal polarized signal for each antenna in the antenna array. The switching network also allows selection of a circular polarized signal from one or more of the antenna elements in the antenna array. This allows the AoX to be more accurate, as it is able to receive horizontally and vertically polarized signals, rather than just circular polarized signals, thereby improving its accuracy. The ability to receive circular polarized signals may be beneficial during reference periods to acquire the proper gain and frequency.
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公开(公告)号：US11143749B2
公开(公告)日：2021-10-12
申请号：US15313634
申请日：2015-05-05
Applicant: PHILIPS LIGHTING HOLDING B.V.
Inventor： Harry Broers , Ruben Rajagopalan
IPC: G01S3/08 , G01S7/4911 , G01S7/4912 , G01S17/04 , F21S8/08 , G01S17/32
Abstract: An object detection system is for object detection within a field of view. A light source provides detection illumination to the field of view and a sensor senses reflected light from the field of view. Time of flight analysis is used to provide distance or presence information for objects within the field of view. The controller is adapted to derive a signal quality parameter relating to the distance or presence information and to control the light source intensity in dependence on the signal quality parameter. In this way, energy savings are made possible by adapting the detection system settings to the scene being observed.
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公开(公告)号：US5084709A
公开(公告)日：1992-01-28
申请号：US524600
申请日：1990-05-17
Applicant: Elie J. Baghdady
Inventor： Elie J. Baghdady
Abstract: This disclosure relates to multi-element antenna clusters or arrays for the reception and transmission of radio waves for direction-finding, navigation aid and emitter and/or receiver location purposes. In particular, it relates to arrangements of multiple antennas whereby the direction of propagation (arrival or departure) of a wavefront is determined from a combination of the amplitudes of phasor (or total individual antenna output) differences between pairs of antennas, said arrangements being along certain geometrical patterns, such as a circle, an ellipse, a polygon, an open straight line, etc., with at least one longest dimension measuring more than one wavelength of the incident or departing wave. Although described in terms of electromagnetic waves and hence antennas as receiving sensors or radiators, this invention is reality applies to any other form of propagating waveborne energy, such as acoustic, ultrasonic, seismic, etc.
Abstract translation: 本公开涉及用于接收和传输无线电波以用于测向，导航辅助和发射器和/或接收器位置目的的多元件天线簇或阵列。 特别地，它涉及多个天线的布置，由此波前的传播方向（到达或离开）是根据天线对之间的相量幅度（或整个单独的天线输出）差的组合确定的，所述布置沿着 某些几何图案，例如圆形，椭圆形，多边形，开放直线等，具有至少一个测量入射或离开波长的波长的最长尺寸。 尽管以电磁波和因此天线作为接收传感器或散热器来描述，但是本发明实际上适用于诸如声学，超声波，地震等的任何其它形式的传播波能量。
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公开(公告)号：US3112485A
公开(公告)日：1963-11-26
申请号：US13897761
申请日：1961-09-18
Applicant: OEHLMAN WALTER C
Inventor： OEHLMAN WALTER C
IPC: G01S3/08
CPC classification number: G01S3/085
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公开(公告)号：US2718003A
公开(公告)日：1955-09-13
申请号：US40843254
申请日：1954-02-05
Applicant: BENDIX AVIAT CORP
Inventor： AMOS HEMPHILL ALFRED , MERLE TEWKSBURY JOHN
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Patent Agency Ranking
公开(公告)号：US2551594A
公开(公告)日：1951-05-08
申请号：US25938139
申请日：1939-03-21
Applicant: GORDON RAYMOND A
Inventor： GORDON RAYMOND A
IPC: G01S3/08
CPC classification number: G01S3/08
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公开(公告)号：US2480234A
公开(公告)日：1949-08-30
申请号：US66690746
申请日：1946-05-03
Applicant: LEON OTTINGER
Inventor： GAGE EDWARD G
IPC: G01S3/08
CPC classification number: G01S3/08
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公开(公告)号：US2480117A
公开(公告)日：1949-08-30
申请号：US60180145
申请日：1945-06-27
Applicant: STANDARD TELEPHONES CABLES LTD
Inventor： CHESUS FRANK O , THOMAS FRANK G
IPC: G01S3/08
CPC classification number: G01S3/085
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公开(公告)号：US2478463A
公开(公告)日：1949-08-09
申请号：US76421747
申请日：1947-07-28
Applicant: HARTFORD NAT BANK & TRUST CO
Inventor： SABLO CHRISTIAAN JAN DE LUSSAN
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公开(公告)号：US2454768A
公开(公告)日：1948-11-30
申请号：US60138645
申请日：1945-06-25
Applicant: STANDARD TELEPHONES CABLES LTD
Inventor： BURROUGHS GORDON S
IPC: G01S3/08
CPC classification number: G01S3/08
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