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    • 1. 发明申请
    • FREQUENCY CALIBRATION OF RADIO FREQUENCY OSCILLATORS
    • 无线电频率振荡器的频率校准
    • WO2010108036A1
    • 2010-09-23
    • PCT/US2010/027864
    • 2010-03-18
    • QUALCOMM INCORPORATEDKWOK, Sai, C.
    • KWOK, Sai, C.
    • H03L7/099H03L7/10
    • H03L7/099H03L7/095H03L7/10
    • A wireless communication device incorporating a set of comparators and logic interrupt into the local oscillator generation circuit block is described. In one design, the local oscillator circuit block includes a RF VCO with coarse and fine frequency tuning. The RF VCO fine frequency tuning signal is monitored continuously to determine if the control voltage is within specified limits. If the RF VCO fine frequency tuning voltage is too low or too high for the RF VCO to meet system requirements or lock on the current desired frequency, an interrupt signal is asserted. In response to the interrupt signal, a wireless communications processor or a hardware state machine initiates coarse frequency calibration of the RF VCO at the desired frequency. After coarse frequency calibration has completed, the RF VCO fine frequency tuning voltage is within specified limits and is continuously monitored.
    • 描述了将一组比较器和逻辑中断结合到本地振荡器产生电路块中的无线通信设备。 在一种设计中,本地振荡器电路块包括具有粗调和精细频率调谐的RF VCO。 RF VCO精细频率调谐信号被连续监视,以确定控制电压是否在规定的范围内。 如果射频VCO的精细频率调谐电压太低或太高,RF VCO才能满足系统要求或锁定当前的所需频率,则断言中断信号。 响应于中断信号,无线通信处理器或硬件状态机以期望的频率发起RF VCO的粗略频率校准。 在粗频率校准完成后,RF VCO精调频率调谐电压在规定的范围内,并连续监测。
    • 2. 发明申请
    • SWITCHING VOLTAGE REGULATOR WITH FREQUENCY SELECTION
    • 切换电压调节器与频率选择
    • WO2010065934A1
    • 2010-06-10
    • PCT/US2009/066882
    • 2009-12-04
    • QUALCOMM IncorporatedKWOK, Sai C.
    • KWOK, Sai C.
    • H04B1/10H04B15/00
    • H04B1/10H02M1/44H02M3/156H04B15/00
    • Techniques for mitigating interference from a switching voltage regulator by intelligently varying the switcher frequency of the switching voltage regulator are provided. In one aspect, the switcher frequency is set by adjusting a frequency setting input to a programmable clock divider. In a further aspect, a processor drives a programmable clock divider which receives a value representative of a dividing factor by which to divide a reference clock frequency signal to generate a desired switcher frequency for the switching voltage regulator. Values of the programmable clock divider are selectively varied to achieve optimal performance and mitigate the effect of switcher frequency spurious content for a given operating condition or conditions.
    • 提供了通过智能地改变开关电压调节器的开关频率来减轻开关稳压器的干扰的技术。 在一个方面,通过调整输入到可编程时钟分频器的频率设置来设置切换器频率。 在另一方面,处理器驱动可编程时钟分频器,该可编程时钟分频器接收代表分频因子的值,通过该值分配参考时钟频率信号以产生用于开关稳压器的期望的开关频率。 选择性地改变可编程时钟分频器的值以实现最佳性能并且减轻对于给定操作条件或条件的切换器频率杂散内容的影响。
    • 4. 发明申请
    • SIMULTANEOUS VOICE AND DATA COMMUNICATION
    • 同时语音和数据通信
    • WO2012058469A1
    • 2012-05-03
    • PCT/US2011/058150
    • 2011-10-27
    • QUALCOMM IncorporatedKWOK, Sai, C.
    • KWOK, Sai, C.
    • H04B1/40H04B1/52
    • H04B1/406H04B1/525
    • A wireless device configured for simultaneous voice and data communications is described. The wireless device includes a voice and data transceiver. The voice and data transceiver includes data path circuitry, voice path circuitry, a first multiplexer and a second multiplexer. The first multiplexer sends a primary data receive signal to the data path circuitry and receives a data transmit signal from the data path circuitry. The second multiplexer sends a diversity data receive signal to the data path circuitry, sends a voice receive signal to the voice path circuitry and receives a voice transmit signal from the voice path circuitry. The wireless device also includes a first antenna coupled to the first multiplexer. The wireless device further includes a second antenna coupled to the second multiplexer.
    • 描述配置用于同时进行语音和数据通信的无线设备。 无线设备包括语音和数据收发器。 语音和数据收发器包括数据路径电路,语音路径电路,第一多路复用器和第二多路复用器。 第一多路复用器将数据接收信号发送到数据路径电路,并从数据路径电路接收数据发送信号。 第二多路复用器将分集数据接收信号发送到数据路径电路,向语音路径电路发送语音接收信号,并从语音路径电路接收语音发送信号。 无线设备还包括耦合到第一多路复用器的第一天线。 无线设备还包括耦合到第二多路复用器的第二天线。