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    • 3. 发明公开
    • ANTENNA FOR UNDERWATER RADIO COMMUNICATIONS
    • 天线用于水下无线电通信
    • EP3291364A1
    • 2018-03-07
    • EP16198054.5
    • 2016-11-09
    • INESC TEC - Instituto de Engenharia de Sistemas e Computadores, Tecnologia e Ciencia
    • de Sousa Pessoa, Luis ManuelSilveira Pereira, Mário RuiAboderin, OluyomiCastro Manuel Faria Salgado, HenriqueInácio, Sofia Isabel
    • H01Q1/04H01Q3/22H01Q7/00H01Q9/20
    • H01Q1/04H01Q3/22H01Q7/00H01Q9/20
    • Method of operating under water an antenna device comprising a frequency-tunable circuit, comprising: tuning said circuit between a first frequency and a second frequency for obtaining a variable directional radiation pattern by the antenna device, to select a directional radiation pattern of the antenna device for improving the radio signal coupling between the antenna devices, in particular for maximizing the radio signal coupling between the two antenna devices, wherein said first frequency and a second frequency are predetermined according to the saltwater-freshwater content of the water such that the directional radiation pattern of the antenna device for one of the two frequencies is directional and the directional pattern of the antenna device for the other of the two frequencies is omnidirectional. Antenna device arranged to periodically tune said circuit to select a directional radiation pattern of the antenna device for improving the radio signal coupling with another antenna device, in particular for maximizing the radio signal coupling with another antenna device.
    • 在水下操作的天线装置,其包括一个频率可调电路的方法,包括:调谐所述第一频率和用于通过天线装置获得的可变定向辐射图的第二频率之间的短路,以选择天线装置的定向辐射图 为改善天线装置之间的无线电信号耦合,尤其是用于所述两个天线装置之间最大化的无线信号耦合,其中所述第一频率和第二频率是根据水的盐水基淡水内容,使得预定的定向辐射 用于两个频率之一的天线装置的图案是方向性的,而用于两个频率中的另一个的天线装置的方向图案是全向的。 天线装置被布置成周期性地调谐所述电路以选择天线装置的定向辐射图案以改善与另一天线装置的无线电信号耦合,特别是用于最大化与另一天线装置的无线电信号耦合。
    • 8. 发明公开
    • A NODE IN A WIRELESS COMMUNICATION SYSTEM, THE NODE HAVING DIFFERENT FUNCTIONAL MODES
    • KNOTEN UND VERFAHREN MIT VERSCHIEDENEN FUNKTIONSWEISEN IN EINEM DRAHTLOSEN KOMMUNIKATIONSSYSTEM
    • EP2715864A1
    • 2014-04-09
    • EP11722419.6
    • 2011-05-27
    • Telefonaktiebolaget LM Ericsson (PUBL)
    • NILSSON, AndreasJOHANSSON, Stefan
    • H01Q1/24H01Q3/22H01Q3/26H01Q21/00H01Q21/08H01Q21/26
    • H04W52/0206H01Q3/26H01Q21/08H04L5/14Y02D70/00
    • The present invention relates to a node in a wireless communication system, which comprises at least one transceiver unit, a first and a second antenna function. The antenna functions comprise a first and a second port connection. The transceiver unit is arranged to communicate by means of at least one frequency band. Each port connection is connectable to said transceiver unit via electrical signal delays of different magnitudes. In a first mode of operation, a certain resulting main radiation lobe is acquired when the antenna functions are receiving or transmitting for each frequency in the frequency band. Said main radiation lobe has a main pointing direction with a certain angular direction in azimuth and elevation with respect to a fixed angular direction. The angular direction for every certain frequency is different from the angular direction for any other frequency.
    • 本发明涉及无线通信系统中的节点,其包括至少一个收发器单元,第一和第二天线功能。 天线功能包括第一和第二端口连接。 收发器单元布置成通过至少一个频带进行通信。 每个端口连接可以通过不同幅度的电信号延迟连接到所述收发器单元。 在第一操作模式中,当天线功能正在频带中的每个频率接收或发射时,获得一定的所得主辐射波瓣。 所述主辐射波具有相对于固定角方向的方位角和仰角具有一定角度方向的主指向。 每个特定频率的角度方向与任何其他频率的角度方向不同。
    • 10. 发明公开
    • Wideband beam forming device, wideband beam steering device and corresponding methods
    • Breitbandstrahlformungsvorrichtung,Breitbandstrahllenkvorrichtung undzugehörigeVerfahren
    • EP2541679A1
    • 2013-01-02
    • EP12171627.8
    • 2012-06-12
    • Sony Corporation
    • Wang, QiStirling-Gallacher, RichardBoehnke, Ralf
    • H01Q3/22G01S7/40G01S13/34
    • H01Q3/22G01S13/0209G01S13/26G01S13/34G01S13/887G01S13/89
    • The present invention relates to a beam forming device and method as well as to a beam steering device and method, e.g. for use in an active imaging device for imaging a scene. To enable the use for wideband digital beam forming and to provide a high accuracy imaging beam forming device is proposed comprising a wideband transmit unit (10) comprising at least one transmit antenna (15) that transmit radiation towards a scene (5), wherein the frequency of the transmit signal is changing with time in a deterministic way within a wideband frequency range, a receiver unit (20) comprising at least two receive antennas (25) and at least one receive element (21, 22) that receive radiation from said scene (5) and that generate receive signals from said received radiation, and a beam forming unit (30) that performs beam forming to form a receive beam and obtain beam formed output signals from said receive signals by use of beam forming weights, wherein for different samples or groups of subsequent samples of a receive signal, a sample representing said receive signal at a different frequency, a frequency-dependent weight is used for beam forming, which frequency-dependent weights are adapted to result in a predetermined shape of said receive beam.
    • 波束形成装置和方法技术领域本发明涉及波束形成装置和方法以及波束转向装置和方法,例如。 用于用于对场景成像的主动成像装置。 提出了能够用于宽带数字波束形成和提供高精度成像波束形成装置,其包括宽带发射单元(10),其包括向场景(5)发射辐射的至少一个发射天线(15),其中, 发射信号的频率随着时间在宽带频率范围内以确定性的方式随时间变化,接收机单元(20)包括至少两个接收天线(25)和至少一个接收元件(21,22),接收单元接收来自所述 场景(5),并且从所述接收的辐射产生接收信号;以及波束形成单元(30),其执行波束形成以形成接收波束并且通过使用波束形成权重从所述接收信号获得波束形成的输出信号,其中, 接收信号的不同样本或后续样本组,代表不同频率的所述接收信号的样本,频率相关权重用于波束形成,频率依赖 nt权重适于导致所述接收波束的预定形状。