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    • 3. 发明授权
    • Method and system for calibration of a tank circuit in a phase lock loop
    • 在锁相环中调节电路的方法和系统
    • US07609122B2
    • 2009-10-27
    • US11868306
    • 2007-10-05
    • Heng-Yu JianZhiwei XuYi-Cheng WuCharles Chien
    • Heng-Yu JianZhiwei XuYi-Cheng WuCharles Chien
    • H03B5/08
    • H03L7/10H03L7/099
    • A phase lock loop (PLL) includes a calibration loop for calibrating a tank circuit for capacitance variation through process variations of manufacturing an integrated circuit including the PLL. A capacitance profile for setting the frequency of the PLL at a process comer is stored. At power up, or after an idle time, a calibration is performed at two frequencies. The capacitances of operating the phase lock loop at the two frequencies are determined and stored. During a frequency change, the capacitance of operating the PLL is determined from the capacitance profile and stored capacitances. The capacitance of the PLL is presumed to change linearly with frequency and the two stored capacitances are used to determine a difference capacitance at the selected frequency by linear interpolating between the two stored capacitances, which is added to the capacitance in the capacitance profile at the selected frequency to generate an operating capacitance.
    • 锁相环(PLL)包括用于通过制造包括PLL的集成电路的过程变化校准用于电容变化的振荡电路的校准回路。 存储用于在处理角设定PLL的频率的电容分布。 在上电或空闲时间后,以两个频率进行校准。 确定并存储在两个频率下操作锁相环的电容。 在频率变化期间,操作PLL的电容由电容曲线和存储的电容确定。 假设PLL的电容随频率线性变化,并且两个存储的电容用于通过在所选择的电容分布中的电容相加的两个存储的电容之间的线性内插来确定所选频率处的差电容, 产生一个工作电容的频率。
    • 8. 发明申请
    • METHOD AND SYSTEM FOR CALIBRATION OF A TANK CIRCUIT IN A PHASE LOCK LOOP
    • 用于在相位锁定环中校准电路的方法和系统
    • US20090091396A1
    • 2009-04-09
    • US11868306
    • 2007-10-05
    • Heng-Yu JianZhiwei XuYi-Cheng WuCharles Chien
    • Heng-Yu JianZhiwei XuYi-Cheng WuCharles Chien
    • H03L7/099H03L7/08
    • H03L7/10H03L7/099
    • A phase lock loop includes a calibration loop for calibrating a tank circuit for capacitance variation through process variations of manufacturing an integrated circuit including the phase lock loop. A capacitance profile for setting the frequency of the phase lock loop at a process corner, such as a typical process corner is stored in driver software or a host processor. At power up, or after an idle time, a calibration is performed at two frequencies. The capacitances of operating the phase lock loop at the two frequencies are determined and stored. During a frequency change, the capacitance of operating the phase lock loop is determined from the capacitance profile and stored capacitances. In one aspect, the capacitance of the phase lock loop is presumed to change linearly with frequency and the two stored capacitances are used to determine a difference capacitance at the selected frequency by linear interpolating between the two stored capacitances. The interpolated difference capacitance is added to the capacitance in the capacitance profile at the selected frequency to generate an operating capacitance. The capacitance of a tank circuit of the phase lock loop is set to the operating capacitance.
    • 锁相环包括用于通过制造包括锁相环的集成电路的过程变化来校准用于电容变化的储能电路的校准回路。 用于设置过程角(例如典型过程角)的锁相环频率的电容分布存储在驱动软件或主机处理器中。 在上电或空闲时间后,以两个频率进行校准。 确定并存储在两个频率下操作锁相环的电容。 在频率变化期间,根据电容曲线和存储的电容确定操作锁相环的电容。 在一个方面,假设锁相环的电容随频率线性变化,并且两个存储的电容用于通过两个存储电容之间的线性内插来确定所选频率处的差电容。 内插差分电容以所选频率加到电容分布中的电容上,以产生一个工作电容。 锁相环的电路电容设定为工作电容。
    • 9. 发明申请
    • AUTOMOTIVE RADAR DEVICE AND ANTENNA COVER THEREOF
    • 汽车雷达装置及其天线罩
    • US20130050034A1
    • 2013-02-28
    • US13253975
    • 2011-10-06
    • Yi-Cheng WuYi-Jie WangChao-Chun LinCheng-Hsiung HsuI-Shan ChenTa-Wei Hsu
    • Yi-Cheng WuYi-Jie WangChao-Chun LinCheng-Hsiung HsuI-Shan ChenTa-Wei Hsu
    • H01Q1/32H01Q1/42
    • H01Q1/3233H01Q1/42
    • An automotive radar device and an antenna cover are disclosed. The automotive radar device includes a base, an antenna disposed on the base, and the antenna cover. The antenna cover includes a main portion and an engagement portion connected to the circumference of the main portion. The engagement portion can be engaged to the base such that the main portion covers the antenna. Therein, a thickness of the main portion along a radiation direction of the antenna is equal to half-wavelength corresponding to a center operation frequency of the antenna under a dielectric constant of the main portion. Thereby, energy radiated from the antenna can mostly pass through the main portion without excessive signal attenuation, which solves the insufficient signal intensity due to a protection cover in the prior art. Further, the main portion can be made of flexible and weather resistant material to improve its physical and chemical properties.
    • 公开了一种汽车雷达装置和天线罩。 汽车雷达装置包括基座,设置在基座上的天线和天线盖。 天线罩包括主体部分和与主体部分的圆周连接的接合部分。 接合部分可以接合到基座,使得主要部分覆盖天线。 其中,沿着天线的辐射方向的主要部分的厚度等于在主要部分的介电常数下对应于天线的中心操作频率的半波长。 因此,从天线辐射的能量可以大部分通过主要部分而没有过多的信号衰减,这解决了现有技术中由于保护罩引起的信号强度不足。 此外,主要部分可以由柔性和耐候性材料制成,以改善其物理和化学性质。