Antenna adapter
    2.
    发明授权
    Antenna adapter 失效
    天线适配器

    公开(公告)号:US6043780A

    公开(公告)日:2000-03-28

    申请号:US758865

    申请日:1996-12-02

    摘要: An antenna adapter for interfacing a portable radiotelephone with external equipment. In a preferred embodiment, a connector assembly includes a first connector portion that inserts directly into the radiotelephone's antenna port, replacing the normal antenna assembly. Matching electrical components on a circuit board are used to match the impedance of the antenna port of the portable radiotelephone. A second connector portion typically uses conventional RF connectors to couple the radiotelephone antenna port to external equipment.

    摘要翻译: 用于将便携式无线电话机与外部设备连接的天线适配器。 在优选实施例中,连接器组件包括直接插入到无线电话天线端口中的第一连接器部分,代替普通天线组件。 使用电路板上的电气元件匹配来匹配便携式无线电话机的天线端口的阻抗。 第二连接器部分通常使用常规RF连接器来将无线电话天线端口耦合到外部设备。

    Dual-band antenna coupler for a portable radiotelephone
    3.
    发明授权
    Dual-band antenna coupler for a portable radiotelephone 失效
    用于便携式无线电话的双频天线耦合器

    公开(公告)号:US5852421A

    公开(公告)日:1998-12-22

    申请号:US760024

    申请日:1996-12-04

    申请人: David Maldonado

    发明人: David Maldonado

    摘要: A dual-band antenna coupler for use in an adapter for portable radiotelephone. A plurality of curved bands of metal are positioned on a ground plane, with at least two of the plurality of curved bands of metal being electrically isolated from the ground plane so as to couple radio frequency (RF) signals to and from the antenna of the portable radiotelephone. The isolated curved bands of metal couple RF signals between the antenna of the portable radiotelephone and first and second matching circuits designed to match the portable radiotelephone antenna at each of the respective frequency bands. A selector switch coupled to the output of the matching circuits selects the appropriate matching circuit output for connection to an external antenna. The adapter also includes at least one ground pin mounted on the ground plane. When the portable radiotelephone is interfaced with the antenna coupler, the ground pin makes electrical contact with a ground reference connection on the portable radiotelephone.

    摘要翻译: 用于便携式无线电话适配器的双频天线耦合器。 金属多个弯曲带位于接地平面上,多个金属弯曲带中的至少两个与接地平面电隔离,以将射频(RF)信号耦合到天线的天线 便携式无线电话。 在便携式无线电话机的天线之间的金属耦合RF信号的隔离的弯曲带,以及被设计成在各个频带中的每一个处匹配便携式无线电话天线的第一和第二匹配电路。 耦合到匹配电路的输出的选择器开关选择用于连接到外部天线的适当的匹配电路输出。 适配器还包括安装在接地平面上的至少一个接地引脚。 当便携式无线电话机与天线耦合器接口时,接地引脚与便携式无线电话机上的接地参考连接电接触。

    SYSTEMS AND METHODS FOR CONTROLLING THE VOLTAGE OF SIGNALS USED TO CONTROL POWER AMPLIFIERS
    5.
    发明申请
    SYSTEMS AND METHODS FOR CONTROLLING THE VOLTAGE OF SIGNALS USED TO CONTROL POWER AMPLIFIERS 有权
    用于控制用于控制功率放大器的信号电压的系统和方法

    公开(公告)号:US20090161588A1

    公开(公告)日:2009-06-25

    申请号:US12133758

    申请日:2008-06-05

    IPC分类号: G08C17/02 H04B7/216

    摘要: A method for controlling the voltage of signals used to control power amplifiers is described. A first multiplexer and a second multiplexer are set to an enabling signal. The first multiplexer is on a first integrated circuit and the second multiplexer is on a second integrated circuit. A command is written to the first multiplexer to set the first multiplexer to one of a plurality of control signals used to control a power amplifier. A command is written to the second multiplexer to select one of the plurality of control signals that maps to the first multiplexer. The second integrated circuit is connected to a power supply.

    摘要翻译: 描述了用于控制用于控制功率放大器的信号的电压的方法。 第一多路复用器和第二多路复用器被设置为使能信号。 第一多路复用器在第一集成电路上,第二多路复用器在第二集成电路上。 一个命令被写入到第一多路复用器中,以将第一多路复用器设置成用于控制功率放大器的多个控制信号之一。 一个命令被写入第二多路复用器以选择映射到第一多路复用器的多个控制信号之一。 第二集成电路连接到电源。

    Local oscillator leakage control in direct conversion processes
    6.
    发明授权
    Local oscillator leakage control in direct conversion processes 有权
    直接转换过程中的本地振荡器泄漏控制

    公开(公告)号:US06960962B2

    公开(公告)日:2005-11-01

    申请号:US10020607

    申请日:2001-12-10

    CPC分类号: H03D3/008 G01N33/14 H03D3/009

    摘要: A system and method for generating a local oscillator (LO) frequency in a zero intermediate frequency (IF) receiver or transmitter is presented. A signal is received from a voltage controlled oscillator (VCO). The signal has a VCO frequency. The VCO frequency is divided by a number N to produce a signal having a divided-down frequency. The signal having the VCO frequency is then mixed with the signal having the divided-down frequency to produce an output signal having an output frequency. Local oscillator leakage is reduced. Thus, the receiver or transmitter may operate in multiple wireless communication bands and modes and meet the associated specifications.

    摘要翻译: 提出了一种用于在零中频(IF)接收机或发射机中产生本地振荡器(LO)频率的系统和方法。 从压控振荡器(VCO)接收信号。 该信号具有VCO频率。 将VCO频率除以数字N以产生具有分频的信号。 然后将具有VCO频率的信号与具有分频频率的信号混合,以产生具有输出频率的输出信号。 本地振荡器泄漏减少。 因此,接收机或发射机可以在多个无线通信频带和模式中操作并满足相关规范。

    Antenna power coupler having a variable coupling factor
    7.
    发明授权
    Antenna power coupler having a variable coupling factor 有权
    具有可变耦合系数的天线功率耦合器

    公开(公告)号:US08929843B2

    公开(公告)日:2015-01-06

    申请号:US13333757

    申请日:2011-12-21

    摘要: An antenna power coupler having a variable coupling factor is disclosed. In an exemplary embodiment, an apparatus includes a coupler configured to generate a power detection signal based on transmit signal power associated with a plurality of transmission technologies and a variable attenuator configured to apply a selected attenuation factor to the power detection signal to generate an adjusted power detection signal, the selected attenuation factor associated with a selected transmission technology.

    摘要翻译: 公开了具有可变耦合系数的天线功率耦合器。 在示例性实施例中,一种装置包括:耦合器,被配置为基于与多个传输技术相关联的发射信号功率产生功率检测信号;以及可变衰减器,被配置为将所选择的衰减因子应用于功率检测信号,以产生经调整的功率 检测信号,所选择的衰减因子与选定的传输技术相关联。

    Systems and methods for controlling the voltage of signals used to control power amplifiers
    10.
    发明授权
    Systems and methods for controlling the voltage of signals used to control power amplifiers 有权
    用于控制用于控制功率放大器的信号电压的系统和方法

    公开(公告)号:US07974317B2

    公开(公告)日:2011-07-05

    申请号:US12133758

    申请日:2008-06-05

    IPC分类号: H04J3/04

    摘要: A method for controlling the voltage of signals used to control power amplifiers is described. A first multiplexer and a second multiplexer are set to an enabling signal. The first multiplexer is on a first integrated circuit and the second multiplexer is on a second integrated circuit. A command is written to the first multiplexer to set the first multiplexer to one of a plurality of control signals used to control a power amplifier. A command is written to the second multiplexer to select one of the plurality of control signals that maps to the first multiplexer. The second integrated circuit is connected to a power supply.

    摘要翻译: 描述了用于控制用于控制功率放大器的信号的电压的方法。 第一多路复用器和第二多路复用器被设置为使能信号。 第一多路复用器在第一集成电路上,第二多路复用器在第二集成电路上。 一个命令被写入到第一多路复用器中,以将第一多路复用器设置成用于控制功率放大器的多个控制信号之一。 一个命令被写入第二多路复用器以选择映射到第一多路复用器的多个控制信号之一。 第二集成电路连接到电源。