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    • 5. 发明授权
    • Dual mode transceiver
    • 双模收发器
    • US5881369A
    • 1999-03-09
    • US675756
    • 1996-07-03
    • Stuart James DeanDavid William Park
    • Stuart James DeanDavid William Park
    • H04B1/00H04B1/40H04B1/44
    • H04B1/0082H04B1/005H04B1/0057H04B1/406H04B1/006
    • A dual mode transceiver architecture suitable for adaptation in either a handset or a base station and capable of operating in both Frequency Division Duplex (FDD) mode or in Time Division Duplexing (TDD) mode is disclosed. Such a transceiver has an up conversion path capable of up converting an Intermediate Frequency (IF) to a Radio Frequency (RF) signal in either an upper band frequency range or a lower band frequency range. Also the transceiver has a down conversion path, used for receiving, for down converting a RF signal in either the upper band or lower band to a desirable IF frequency. The transceiver includes a switch array capable of switching the up conversion path to either the upper band port or the lower band port of a diplexer and the switch array also switches the upper band port and lower band port of the diplexer to the down conversion path depending on whether the transceiver is operating in TDD mode or FDD mode. Also, if in TDD mode, the switch array determines whether the transceiver is transmitting or receiving.
    • 公开了一种适用于手持机或基站中适应并且能够以频分双工(FDD)模式或时分双工(TDD)模式)工作的双模收发器体系结构。 这样的收发器具有能够将中频(IF)上变换为高频段或低频区域中的射频(RF)信号的上变频路径。 此外,收发器具有用于接收的下变频路径,用于将上段或下级频带中的RF信号下变频到期望的中频频率。 收发器包括能够将上行转换路径切换到双工器的上带端口或下频带端口的交换机阵列,并且交换机阵列还将双工器的上频带端口和下频带端口切换到下行转换路径,取决于 关于收发器是在TDD模式还是FDD模式下运行。 而且,如果在TDD模式下,交换机阵列确定收发器是发送还是接收。
    • 6. 发明授权
    • Pseudo-omnidirectional base station arrangement
    • 伪全方位基站布置
    • US6091970A
    • 2000-07-18
    • US997782
    • 1997-12-24
    • Stuart James Dean
    • Stuart James Dean
    • H04W88/08H04Q7/30
    • H04W88/08
    • A base station comprising an arrangement of several directional antennas whose individual azimuthal beam patterns achieve substantially omnidirectional coverage is disclosed. The invention is particularly suitable to telecommunications networks in an initial developmental stage, or to networks deployed in rural areas, both scenarios requiring a low-capacity high-range omnidirectional coverage area. The antennas are generally less conspicuous than a purely omnidirectional antenna achieving the same range, and preferably possess horizontal and vertical polarization ports. In its simplest form, the invention provides a single base station transceiver connected simultaneously to the horizontal polarization port of each antenna. Phase shifters may be inserted in the transmit path for cancellation of nulls in the interference pattern resulting from connection the transceiver to more than one antenna at a time. As capacity demand increases, further transceivers can be added without change to the antenna arrangement. An additional transceiver provides either pseudo-omnidirectional coverage if connected to the vertical polarization port of each antenna or directional coverage if selectively connected to the vertical polarization port of a single antenna. In the latter case, carrier-to-interference information is fed to a beam select module that controls a transmit switch matrix for establishing the selective connection.
    • 公开了一种基站,其包括多个定向天线的布置,其各个方位角波束图案实现基本上全向的覆盖。 本发明特别适用于初始发展阶段的电信网络或者部署在农村地区的网络,这两种情况都需要低容量高范围全向覆盖区域。 这些天线通常比实现相同范围的纯全向天线不太明显,并且优选地具有水平和垂直极化端口。 在其最简单的形式中,本发明提供了同时连接到每个天线的水平极化端口的单个基站收发器。 移相器可以插入在发送路径中,用于消除由收发器一次连接到多于一个天线的干扰模式中的空值。 随着容量需求的增加,可以增加收发器,而不改变天线布置。 如果连接到每个天线的垂直极化端口或定向覆盖,如果选择性地连接到单个天线的垂直极化端口,则另外的收发器提供伪全向覆盖。 在后一种情况下,载波干扰信息被馈送到控制用于建立选择性连接的发射开关矩阵的波束选择模块。
    • 7. 发明授权
    • Base station antenna arrangement
    • 基站天线布置
    • US5771017A
    • 1998-06-23
    • US792537
    • 1997-01-31
    • Stuart James DeanKeith Roy BroomePeter John Chrystie
    • Stuart James DeanKeith Roy BroomePeter John Chrystie
    • H01Q1/24H01Q25/00H04B7/04H04W16/28H01Q3/02
    • H04W16/28H01Q1/246H01Q25/00H04B7/0408
    • An antenna for a base station comprising a plurality of antenna arrays (40; FIG. 6a) each capable of forming a multiplicity of separate overlapping narrow beams in azimuth, the arrays being positioned such that the beams formed by the arrays provide a coverage in azimuth wider than each array. Means for receiving r.f. signals for a given call include a plurality of receive amplifiers (62; FIG. 6a) one for each beam of an antenna array, means for combining the outputs of the plurality of receive amplifiers, switching means for applying the combined receive signals to the r.f. transceiver handling the given call; and a single power amplifier (52; FIG. 6a) for transmitting r.f. signals for the given call for applying the transceiver transmit signal to an individual one of the beams.
    • 一种用于基站的天线,包括多个天线阵列(40;图6a),每个天线阵列能够​​在方位角上形成多个独立的重叠窄波束,所述阵列被定位成使得由阵列形成的波束提供方位角的覆盖 比每个阵列宽。 接收r.f.的方式 用于给定呼叫的信号包括用于天线阵列的每个波束的多个接收放大器(62;图6a),用于组合多个接收放大器的输出的装置,用于将组合接收信号施加到r.f的开关装置。 收发器处理给定的呼叫; 以及用于发送r.f的单个功率放大器(52;图6a)。 给定呼叫的信号,用于将收发器发送信号应用于单个波束中的一个。