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    SELECTIVELY ACTIVATED AGC SIGNAL MEASUREMENT UNIT
    104.
    发明专利
    SELECTIVELY ACTIVATED AGC SIGNAL MEASUREMENT UNIT 未知

    公开(公告)号：CA2425986C

    公开(公告)日：2007-06-26

    申请号：CA2425986

    申请日：2001-10-12

    Applicant: INTERDIGITAL TECH CORP

    Inventor： SILVERBERG AVI ,  KAZAKEVICH LEONID ,  JACQUES ALEXANDER

    IPC: H03G3/20 ,  H04B7/005 ,  H03G3/30 ,  H04B1/16 ,  H04J3/00

    Abstract: In a TDD wireless communication system between transmitters and associated receivers, automatic gain control of a receiver is only applied during the corresponding time slot within the TDD signal time frame architecture. Successive received signal strengths are measured and gain levels are stored as estimates for an initial gain level in future time slots of the TDD signa l. Estimating techniques, such as averaging or trending of received signal strength over successive time slots, and averaging or trending of gain level settings, provide improved estimation of future initial gain levels.

    105.
    发明专利
    未知

    公开(公告)号：DE60120788T2

    公开(公告)日：2007-03-29

    申请号：DE60120788

    申请日：2001-03-28

    Applicant: INTERDIGITAL TECH CORP

    Inventor： KAZAKEVICH LEONID ,  CABROL PATRICK

    IPC: H03F3/24 ,  H04B7/005 ,  H03F1/02 ,  H03F1/06 ,  H03F1/30 ,  H03G3/30

    Abstract: A communication signal input (20) provides a voice or data wireless signal (32) for transmission. A detector (14) removes the modulation component from the spread communication signal and provides a voltage to a voltage-to-current converter (16) controlled by a transmit power control (TPC) signal (26). An output current (30) and the output signal (38) are connected to a current mirror (18) that outputs a bias signal (34) to a radio frequency (RF) power amplifier (12). An independent claim is also included for a method of dynamically biasing an RF power amplifier.

    POLARIZACION DINAMICA PARA AMPLIFICACIONES DE POTENCIA DE RF.
    106.
    发明专利
    POLARIZACION DINAMICA PARA AMPLIFICACIONES DE POTENCIA DE RF. 未知

    公开(公告)号：ES2263898T3

    公开(公告)日：2006-12-16

    申请号：ES03027415

    申请日：2001-03-28

    Applicant: INTERDIGITAL TECH CORP

    Inventor： KAZAKEVICH LEONID ,  CABROL PATRICK

    IPC: H03F3/24 ,  H04B7/005 ,  H03F1/02 ,  H03F1/06 ,  H03F1/30 ,  H03G3/30

    Abstract: Una unidad de abonado que recibe datos y transmite una señal de control de potencia de transmisión (TCP) a través de una señal de enlace descendente de comunicaciones, que comprende: un amplificador de potencia de RF (12) con un punto de polarización para amplificar la señal de comunicación, para generar una señal de salida de RF; un detector (14), para recibir la mencionada señal de comunicación y para eliminar las componentes de modulación de la mencionada señal de comunicación, para proporcionar una señal de salida del detector; un convertidor (16), acoplado al mencionado detector, configurado parad procesar la mencionada señal TPC y la mencionada señal de salida del detector, para generar una señal de corriente; y un circuito espejo de corriente (18) para recibir la mencionada señal de corriente, y una realimentación de la señal de salida de RF mencionada, y para comparar la mencionada señal de corriente con la mencionada realimentación para generar una señal de polarización, por lo queel mencionado punto de polarización del amplificador de RF se ajusta dinámicamente en respuesta a la mencionada señal de polarización.

    107.
    发明专利
    未知

    公开(公告)号：NO20065032L

    公开(公告)日：2006-11-02

    申请号：NO20065032

    申请日：2006-11-02

    Applicant: INTERDIGITAL TECH CORP

    Inventor： KAZAKEVICH LEONID ,  HAQUE TANBIR ,  DEMIR ALPASLAN ,  KLAHN GERALD

    IPC: H03C1/62 ,  H04B7/005 ,  H03F1/56 ,  H03G3/30 ,  H04B1/04 ,  H04B1/46 ,  H04B17/00

    Abstract: A method and apparatus for dynamically adjusting the impedance between a transmitter's power amplifier (PA) and antenna to efficiently transfer power from the PA to the antenna. The impedance between the PA and the antenna is adjusted based on power level measurements and/or PA direct current (DC) consumption measurements, depending on whether the PA is a linear PA or a switch-mode PA. In another embodiment, a hybrid PA including a first stage linear PA and a second stage switch-mode PA is implemented in a transmitter. The hybrid PA selectively connects the output of the first stage linear PA to one of the input of the second stage switch-mode PA and the output of the hybrid PA, depending on the output power level of the first stage linear PA, the output power level of the hybrid PA, or a requirement indicated by a transmit power control (TPC) command.

    108.
    发明专利
    未知

    公开(公告)号：AT332594T

    公开(公告)日：2006-07-15

    申请号：AT04012221

    申请日：2001-10-12

    Applicant: INTERDIGITAL TECH CORP

    Inventor： JACQUES ALEXANDER ,  KAZAKEVICH LEONID ,  SILVERBERG AVIL

    IPC: H03G3/20 ,  H03G3/30 ,  H04B1/16 ,  H04B7/005 ,  H04J3/00

    Abstract: In a TDD wireless communication system between transmitters and associated receivers, automatic gain control of a receiver is only applied during the corresponding time slot within the TDD signal time frame architecture. Successive received signal strengths are measured and gain levels are stored as estimates for an initial gain level in future time slots of the TDD signal. Estimating techniques, such as averaging or trending of received signal strength over successive time slots, and averaging or trending of gain level settings, provide improved estimation of future initial gain levels.

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