RADIO FREQUENCY RECEIVER, WIRELESS COMMUNICATION UNIT AND METHOD OF OPERATION
    51.
    发明申请
    RADIO FREQUENCY RECEIVER, WIRELESS COMMUNICATION UNIT AND METHOD OF OPERATION 审中-公开
    无线电频率接收机,无线通信单元及其操作方法

    公开(公告)号:WO2009143318A3

    公开(公告)日:2010-02-25

    申请号:PCT/US2009044786

    申请日:2009-05-21

    CPC classification number: H04B1/109

    Abstract: A wireless communication unit (200) comprises a radio frequency (RF) receiver for receiving an RF signal and providing the received RF signal to an off-channel signal detector (218) and a quadrature down conversion mixer circuit comprising at least one dynamic matching mixer stage (226, 228, 250, 252). The off-channel signal detector (218) is arranged to detect whether an off-channel signal level of the received RF signal exceeds a threshold and, in response to determining that the received off-channel RF signal exceeds the threshold, the off-channel signal detector (218) deactivates the at least one dynamic matching mixer stage. Also described is a semiconductor that comprises a receiver, and a method of operation therefor.

    Abstract translation: 无线通信单元(200)包括射频(RF)接收机,用于接收RF信号并将接收到的RF信号提供给偏离信道信号检测器(218)和正交下变频混频器电路,其包括至少一个动态匹配混频器 阶段(226,228,250,252)。 偏离信道信号检测器(218)被布置成检测所接收的RF信号的偏离信道信号电平是否超过阈值,并且响应于确定接收的离频信道RF信号超过阈值,偏离信道 信号检测器(218)去激活所述至少一个动态匹配混合器级。 还描述了包括接收器的半导体及其操作方法。

    NOTCHED ANTENNA STRUCTURE WITH A STEPPED SHAPED ELEMENT
    52.
    发明申请
    NOTCHED ANTENNA STRUCTURE WITH A STEPPED SHAPED ELEMENT 审中-公开
    带有台阶形状元件的凹槽天线结构

    公开(公告)号:WO2009143316A3

    公开(公告)日:2010-02-25

    申请号:PCT/US2009044782

    申请日:2009-05-21

    CPC classification number: H01Q1/243 H01Q9/0442

    Abstract: An antenna assembly (10) includes a ground plane formed on a chassis (12) of the radio and the functional knob forming an antenna element (11). The antenna assembly further includes a slot or notch element (14) in the ground plane substantially adjacent to the functional knob and having a length less than ¼ wavelength, and a coaxial cable (13) feeding the antenna element. A shield of the coaxial cable can be directly connected to the ground plane and a center conductor of the coaxial cable can be directly coupled to the functional knob to provide a galvanic connection for narrowband performance or the center conductor can be electromagnetically coupled to the functional knob for wideband performance or both. The antenna assembly can create a zero volume notch type ground excitation.

    Abstract translation: 天线组件(10)包括形成在无线电装置的机架(12)上的接地平面和形成天线元件(11)的功能旋钮。 天线组件还包括在接地平面中基本上与功能旋钮相邻并且具有小于1/4波长的长度的槽或凹口元件(14),以及馈送天线元件的同轴电缆(13)。 同轴电缆的屏蔽层可以直接连接到接地平面,并且同轴电缆的中心导体可以直接耦合到功能旋钮,以提供用于窄带性能的电流连接,或者中心导体可以电磁耦合到功能旋钮 用于宽带性能或两者兼容。 天线组件可以产生零容积陷波型接地激励。

    ANTENNA ARRANGEMENT
    54.
    发明申请
    ANTENNA ARRANGEMENT 审中-公开
    天线安排

    公开(公告)号:WO2007121063B1

    公开(公告)日:2008-12-11

    申请号:PCT/US2007065424

    申请日:2007-03-29

    Abstract: An antenna arrangement (1000) for use in an RF communication terminal including a plurality of resonators (1003, 1005, 1007, 1009) formed from a plurality of conducting wires (1002, 1004, 1008, 1010, 1012) the resonators being operable to provide radio frequency resonances in at least two different operational frequency bands (VHF, UHF, 700/800 MHz, GPS ranges) the wires being mutually adjacent and at least three of the wires having different lengths, and a plurality of radio frequency feed channels (113, 115, 117, 119) each being operably connected to an associated one of the resonators to deliver an RF signal between that resonator and an associated radio.

    Abstract translation: 一种用于包括由多根导线(1002,1004,1008,1010,1012)形成的多个谐振器(1003,1005,1007,1009)的RF通信终端中的天线装置(1000),所述谐振器可操作用于 在至少两个不同的操作频带(VHF,UHF,700 / 800MHz,GPS范围)中提供射频共振,所述导线彼此相邻,并且所述导线中的至少三个具有不同的长度,以及多个射频馈送通道 它们各自可操作地连接到谐振器中相关联的一个谐振器,以在谐振器和相关无线电之间传送RF信号。

    A TERMINAL FOR USE IN A WIRELESS COMMUNICATION SYSTEM AND A METHOD OF OPERATION THEREOF
    55.
    发明申请
    A TERMINAL FOR USE IN A WIRELESS COMMUNICATION SYSTEM AND A METHOD OF OPERATION THEREOF 审中-公开
    用于无线通信系统的终端及其操作方法

    公开(公告)号:WO2007103904A3

    公开(公告)日:2008-02-21

    申请号:PCT/US2007063356

    申请日:2007-03-06

    Abstract: A terminal (200) and method for operation thereof for use in a wireless communication system (100), the terminal including a plurality of antennas (215, 235, 255) and a plurality of receiver chains (217, 237, 257) each including an associated one of the antennas, the terminal being operable to receive a signal including a plurality of time divided portions including a first portion (303) and a second portion (304), characterised in that the terminal is operable in a manner such each of the plurality of receiver chains is active when the first portion of the signal is being received and at least one of the receiver chains is inactive when the second portion of the signal is being received.

    Abstract translation: 一种在无线通信系统(100)中使用的终端(200)及其操作方法,所述终端包括多个天线(215,235,255)和多个接收机链(217,237,257),每个接收机链包括 相关联的一个天线,终端可操作以接收包括多个时分分割部分的信号,包括第一部分(303)和第二部分(304),其特征在于,终端可以以这样的方式操作: 当正在接收信号的第一部分时,多个接收机链是有效的,并且当正在接收信号的第二部分时,接收机链中的至少一个处于非活动状态。

    A Cartesian loop RF transmitter with adaptive envelope modulation of the amplifier power supply voltage

    公开(公告)号:GB2466218A

    公开(公告)日:2010-06-16

    申请号:GB0822729

    申请日:2008-12-12

    Applicant: MOTOROLA INC

    Abstract: The power supply voltage Vs for the power amplifier 126 in a radio transmitter is reduced until non-linearity is detected, thereby achieving optimal amplifier efficiency. The supply voltage controller 127 provides a reference signal to the regulator 111 which is the product of the RF signal envelope and a scaling factor from the nonlinearity detector 125. The scaling factor is reduced until nonlinearity occurs or the scaling factor reaches a minimum value. The nonlinearity detector 125 (figure 2) is coupled to the outputs of the Cartesian loop filters 116,118 and measures the ratio of power at an offset frequency to on-channel power. Efficiency is not reduced by VSWR changes.

    Wireless communication unit, linearised transmitter circuit and method of linearising therein

    公开(公告)号:GB2459990A

    公开(公告)日:2009-11-18

    申请号:GB0913952

    申请日:2007-11-01

    Applicant: MOTOROLA INC

    Abstract: A wireless communication unit (300) comprises a linearised transmitter (325) having a forward path and a feedback path, respectively comprising at least one up- mixer and down-mixer, and forming two loops in quadrature. A phase training signal is applied to the at least one down-mixer in the feedback path in an open loop mode of operation to identify a loop phase adjustment to be applied. At least one of the two loops is switched to a closed loop mode of operation and the loop phase adjustment is applied to at least one up-mixer located in the forward path.

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