公开(公告)号：US09531387B2

公开(公告)日：2016-12-27

申请号：US14587128

申请日：2014-12-31

Applicant: MEDIATEK INC.

Inventor： Chun-Jen Fang ,  Ching-Sheng Wu ,  Meng-Lin Wu ,  Chih-Ming Wang ,  Chiao-Chih Chang

IPC: H04B7/00 ,  H04B15/00 ,  H03L1/02 ,  H04B1/3827

CPC classification number: H03L1/02 ,  H04B2001/3861

Abstract: A handheld device and a frequency tracking method thereof are provided. The handheld device comprises an oscillator, a radio frequency (RF) chip, a modem module, a first thermal sensor and a thermal module. The oscillator generates an oscillation signal with an oscillation frequency. The RF chip is electrically connected to the oscillator and configured to receive a paging signal from a paging channel and an RF signal from a non-regular channel based on the oscillation signal. The modem module is electrically connected to the RF chip. The first thermal sensor disposed close to the oscillator measures a heat source temperature. The thermal module electrically connected to the modem module and the first thermal sensor enables the modem module to execute a frequency compensation process by using the RF signal of both the paging signal and the RF signal according to the heat source temperature.

Abstract translation: 提供了一种手持设备及其频率跟踪方法。 手持设备包括振荡器，射频（RF）芯片，调制解调器模块，第一热传感器和热模块。 振荡器产生振荡频率的振荡信号。 RF芯片电连接到振荡器，并且被配置为基于振荡信号从寻呼信道和来自非规则信道的RF信号接收寻呼信号。 调制解调器模块电连接到RF芯片。 靠近振荡器设置的第一个热传感器测量热源温度。 电连接到调制解调器模块和第一热传感器的热模块使得调制解调器模块能够根据热源温度使用寻呼信号和RF信号的RF信号来执行频率补偿处理。