Transceiver with switchable frequency band and bandwidth
    11.
    发明授权
    Transceiver with switchable frequency band and bandwidth 失效
    收发器具有可切换的频带和带宽

    公开(公告)号:US5852603A

    公开(公告)日:1998-12-22

    申请号:US806439

    申请日:1997-02-26

    IPC分类号: H04B1/40 H04J3/00

    CPC分类号: H04B1/005 H04B1/406

    摘要: A transceiver is described which in a FDD mode of operation receives at a first frequency (F1) and transmits at a second frequency (F2); and in a TDD mode of operation receives and transmits at a third frequency (F3). The transceiver incorporates in a receiving branch at least a first mixer for forming a first intermediate frequency (IF1) from a received frequency (F1, F3) and a first local oscillator frequency (LO1); and a second mixer for forming a second intermediate frequency (IF2) from the first intermediate frequency (IF1) and the second local oscillator frequency (LO2). In a transmission branch the transceiver includes a modulator for modulating signals to be transmitted (TXI, TXQ) to a third intermediate frequency (IF3); a third mixer (16) for forming a transmission frequency (F2, F3) from a third intermediate frequency (IF3) and a fourth local oscillator frequency (LO4). Also included is a first synthesizer for forming equally high first and fourth local oscillator frequencies (LO1, LO4), and a second synthesizer and a frequency multiplier or divider and a switching arrangement for forming and switching a fourth frequency (FS) and its M times multiple (M*FS) such that the fourth frequency (FS) is an absolute value of the difference between the reception frequency (F1) and the transmission frequency (F2) of the FDD mode of operation divided by (M-1).

    摘要翻译: 描述了在FDD操作模式中以第一频率(F1)接收并以第二频率(F2)发送的收发器; 并且在TDD操作模式中以第三频率(F3)接收和发送。 所述收发机至少包括用于从接收频率(F1,F3)和第一本地振荡器频率(LO1)形成第一中频(IF1)的第一混频器的接收分支; 以及用于从第一中频(IF1)和第二本机振荡频率(LO2)形成第二中频(IF2)的第二混频器。 在传输分支中,收发器包括用于将要发送的信号(TXI,TXQ)调制到第三中频(IF3)的调制器。 用于从第三中频(IF3)和第四本机振荡频率(LO4)形成发送频率(F2,F3)的第三混频器(16)。 还包括用于形成同样高的第一和第四本地振荡器频率(LO1,LO4)的第一合成器和用于形成和切换第四频率(FS)的第二合成器和倍频器或分频器和用于形成和切换其M次的开关装置 多个(M * FS),使得第四频率(FS)是FDD操作模式除以(M-1)的接收频率(F1)和发送频率(F2)之间的差的绝对值。

    Method for installing services
    15.
    发明授权
    Method for installing services 失效
    基于其提供的功能而无需手动干预的用于分配用于检测无线外围设备的资源的方法

    公开(公告)号:US06574678B1

    公开(公告)日:2003-06-03

    申请号:US09257777

    申请日:1999-02-25

    IPC分类号: G06F1300

    CPC分类号: H04W4/00 H04W76/10

    摘要: The invention relates to a method for installing at least one service (704, 705, 706) of at least one external device (MS1, MS2, MS3) to a data processor (PC, LPC, PR). Said at least one service (704, 705, 706) can be used for controlling the functions of said external device (MS1, MS2, MS3) from the data processor (PC, LPC, PR). In the method, a local area link is established for transferring information between said data processor (PC, LPC, PR) and said at least one external device (MS1, MS2, MS3). From said at least one external device (MS1, MS2, MS3), it is determined which are the services (704, 705, 706) available in it. In the data processor (PC, LPC, PR), at least one service packet. (701) is installed, which contains at least one of said services (704, 705, 706) available in the wireless communication device (MS1, MS2, MS3).

    摘要翻译: 本发明涉及一种用于将至少一个外部设备(MS1,MS2,MS3)的至少一个服务(704,705,706)安装到数据处理器(PC,LPC,PR)的方法。 所述至少一个服务(704,705,706)可用于从数据处理器(PC,LPC,PR)控制所述外部设备(MS1,MS2,MS3)的功能。 在该方法中,建立了用于在所述数据处理器(PC,LPC,PR)和所述至少一个外部设备(MS1,MS2,MS3)之间传送信息的局域链路。 从所述至少一个外部设备(MS1,MS2,MS3)中,确定哪些是可用的服务(704,705,706)。 在数据处理器(PC,LPC,PR)中,至少有一个服务包。 (701),其包含在无线通信设备(MS1,MS2,MS3)中可用的所述服务(704,705,706)中的至少一个。