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    • 1. 发明申请
    • PEAK CURRENT CONTROL IN WIRELESS NETWORK INTERFACE DEVICES
    • 无线网络接口设备中的峰值电流控制
    • WO2004102820A2
    • 2004-11-25
    • PCT/CA2004000733
    • 2004-05-14
    • SIERRA WIRELESS INCLIU PINGMILLER BRUCEWONG RACHEL
    • LIU PINGMILLER BRUCEWONG RACHEL
    • H04B1/04H04B1/38H04B1/16
    • H04B1/38H04B2001/0416
    • Methods of and apparatuses for varying and controlling the efective series resistance (ESR) of a power supply rail configured to transmit power from a power supply of a host device to a wireless network interface device (e.g. a wireless modem). Varying and controlling the ESR of the power supply rail, relative to an ESR of a super capacitor coupled to the power supply rail, allows control of the currents drawn from the host power supply and a super capacitor. During a time when the wireless network interface device is transmitting or is about to transmit, the ESR of the power supply rail is increased so that it exceeds the ESR of the super capacitor, thereby causing current for the power amplifier (PA) of the wireless network interface device to be drawn primarily from the super capacitor, rather than from the host power supply. During a time when the wireless network interface device has completed transmitting or is about to complete transmitting, the ESR of the host power supply is lowered so that it is less than the ESR of the super capacitor, thereby causing the super capacitor to enter a charging state.
    • 用于改变和控制被配置为将功率从主机设备的电源传输到无线网络接口设备(例如,无线调制解调器)的电源轨的有效串联电阻(ESR)的方法和装置。 改变和控制电源轨的ESR相对于耦合到电源轨的超级电容的ESR允许控制从主电源和超级电容器吸取的电流。 在无线网络接口设备正在传输或正在传输的时间内,电源轨的ESR增加,使其超过超级电容器的ESR,从而导致无线电功率放大器(PA)的电流 网络接口设备主要从超级电容器中抽取,而不是从主机供电。 在无线网络接口设备完成发送或即将完成传输的时间内,主电源的ESR降低,使其小于超级电容器的ESR,从而使超级电容器进入充电状态 州。