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    • 1. 发明申请
    • Frequency synthesizer applied to a digital television tuner
    • 频率合成器应用于数字电视调谐器
    • US20090061804A1
    • 2009-03-05
    • US11987029
    • 2007-11-27
    • Chi-Tung ChangChih-Hao LaiChieh-Tsao Hwang
    • Chi-Tung ChangChih-Hao LaiChieh-Tsao Hwang
    • H04B1/06
    • H03L7/18H03L7/0891H03L7/099
    • A frequency synthesizer applied to a digital television tuner includes: a voltage controlled oscillator (VCO), a phase locked loop (PLL), a frequency divider unit, and a multiplexer. The maximum oscillated frequency of the VCO is twice its minimum frequency. The PLL controls and locks the VCO output frequency by a frequency control signal. The frequency divider unit includes a plurality of first dividers which form a cascade connection. The frequency divider unit receives the VCO output frequency, and subsequently divides the output frequency one by one. The multiplexer receives the dividing signals, and then chooses one of the dividing signals by a frequency selection signal, and generates a local oscillation signal. Hence, the present invention can implement the frequency synthesizer by simple architecture and cover the frequency ranges of Digital Video Broadcasting standard.
    • 应用于数字电视调谐器的频率合成器包括:压控振荡器(VCO),锁相环(PLL),分频器单元和多路复用器。 VCO的最大振荡频率是其最小频率的两倍。 PLL通过频率控制信号控制和锁定VCO输出频率。 分频器单元包括形成级联连接的多个第一分频器。 分频器单元接收VCO输出频率,随后逐个分频输出频率。 多路复用器接收分频信号,然后通过频率选择信号选择一个分频信号,并产生本地振荡信号。 因此,本发明可以通过简单的架构实现频率合成器并覆盖数字视频广播标准的频率范围。
    • 2. 发明申请
    • FREQUENCY SYNTHESIZER APPLIED TO FREQUENCY HOPPING SYSTEM
    • 频率合成器适用于频率控制系统
    • US20080285625A1
    • 2008-11-20
    • US11773963
    • 2007-07-06
    • Chi-Tung ChangChih-Hao LaiChieh-Tsao Hwang
    • Chi-Tung ChangChih-Hao LaiChieh-Tsao Hwang
    • H04B1/00
    • H03L7/183H03B21/025
    • A frequency synthesizer applied to a frequency hopping system includes a voltage controlled oscillator (VCO), a phase lock loop (PLL) system, a second frequency divider, a first SSB mixer, a second SSB mixer, and a multiplexer. The VCO generates an oscillating frequency. The PLL system includes a first frequency divider and divides the oscillating frequency by 10 to generate a first dividing signal. The second frequency divider divides the oscillating frequency by 2 to generate a second dividing signal and further divides the second dividing signal by 2 to generate a third dividing signal. The first SSB mixer mixes frequencies of the second and third dividing signals to generate a first mixing signal. The second SSB mixer mixes frequencies of the first mixing signal and the first dividing signal to generate a second mixing signal. The Multiplexer determines to output the first mixing signal or the second mixing signal.
    • 应用于跳频系统的频率合成器包括压控振荡器(VCO),锁相环(PLL)系统,第二分频器,第一SSB混频器,第二SSB混频器和多路复用器。 VCO产生振荡频率。 PLL系统包括第一分频器,并将振荡频率除以10以产生第一分频信号。 第二分频器将振荡频率除以2以产生第二分频信号,并将第二分频信号除以2,以产生第三分频信号。 第一SSB混频器混合第二和第三分频信号的频率以产生第一混频信号。 第二SSB混频器混合第一混频信号和第一分频信号的频率以产生第二混频信号。 多路复用器确定输出第一混频信号或第二混频信号。
    • 4. 发明授权
    • Frequency synthesizer applied to frequency hopping system
    • 频率合成器适用于跳频系统
    • US07545847B2
    • 2009-06-09
    • US11773963
    • 2007-07-06
    • Chi-Tung ChangChih-Hao LaiChieh-Tsao Hwang
    • Chi-Tung ChangChih-Hao LaiChieh-Tsao Hwang
    • H04B1/38
    • H03L7/183H03B21/025
    • A frequency synthesizer applied to a frequency hopping system includes a voltage controlled oscillator (VCO), a phase lock loop (PLL) system, a second frequency divider, a first SSB mixer, a second SSB mixer, and a multiplexer. The VCO generates an oscillating frequency. The PLL system includes a first frequency divider and divides the oscillating frequency by 10 to generate a first dividing signal. The second frequency divider divides the oscillating frequency by 2 to generate a second dividing signal and further divides the second dividing signal by 2 to generate a third dividing signal. The first SSB mixer mixes frequencies of the second and third dividing signals to generate a first mixing signal. The second SSB mixer mixes frequencies of the first mixing signal and the first dividing signal to generate a second mixing signal. The Multiplexer determines to output the first mixing signal or the second mixing signal.
    • 应用于跳频系统的频率合成器包括压控振荡器(VCO),锁相环(PLL)系统,第二分频器,第一SSB混频器,第二SSB混频器和多路复用器。 VCO产生振荡频率。 PLL系统包括第一分频器,并将振荡频率除以10以产生第一分频信号。 第二分频器将振荡频率除以2以产生第二分频信号,并将第二分频信号除以2,以产生第三分频信号。 第一SSB混频器混合第二和第三分频信号的频率以产生第一混频信号。 第二SSB混频器混合第一混频信号和第一分频信号的频率以产生第二混频信号。 多路复用器确定输出第一混频信号或第二混频信号。
    • 5. 发明授权
    • Antenna module and electronic apparatus
    • 天线模块和电子设备
    • US08878730B2
    • 2014-11-04
    • US13462833
    • 2012-05-03
    • Chen-Ta HungWei-Chih HuangChao-Chu WengChieh-Tsao Hwang
    • Chen-Ta HungWei-Chih HuangChao-Chu WengChieh-Tsao Hwang
    • H01Q1/38
    • H01Q1/245H01Q1/38
    • An antenna module and an electronic apparatus are provided. The electronic apparatus includes a housing and the antenna module. The housing has an inner surface. The antenna module includes a circuit board, a proximity sensor and a sensing antenna patch. The circuit board is disposed in the housing, and has a top surface and a bottom surface opposite to the top surface. The circuit board has a communication antenna pattern on the top surface. The proximity sensor is mounted on the bottom surface. The sensing antenna patch is assembled on the inner surface of the housing and electrically connected to the proximity sensor. An orthogonal projection of the communication antenna pattern on the inner surface overlaps the sensing antenna patch on the inner surface.
    • 提供天线模块和电子设备。 电子设备包括壳体和天线模块。 外壳具有内表面。 天线模块包括电路板,接近传感器和感测天线贴片。 电路板设置在壳体中,并且具有与顶表面相对的顶表面和底表面。 电路板在顶面具有通信天线图案。 接近传感器安装在底面上。 感测天线贴片组装在壳体的内表面上并电连接到接近传感器。 通信天线图案在内表面上的正交投影与内表面上的感测天线贴片重叠。
    • 10. 发明申请
    • ANTENNA MODULE AND ELECTRONIC APPARATUS
    • 天线模块和电子设备
    • US20130222190A1
    • 2013-08-29
    • US13462833
    • 2012-05-03
    • Chen-Ta HungWei-Chih HuangChao-Chu WengChieh-Tsao Hwang
    • Chen-Ta HungWei-Chih HuangChao-Chu WengChieh-Tsao Hwang
    • H01Q1/24
    • H01Q1/245H01Q1/38
    • An antenna module and an electronic apparatus are provided. The electronic apparatus includes a housing and the antenna module. The housing has an inner surface. The antenna module includes a circuit board, a proximity sensor and a sensing antenna patch. The circuit board is disposed in the housing, and has a top surface and a bottom surface opposite to the top surface. The circuit board has a communication antenna pattern on the top surface. The proximity sensor is mounted on the bottom surface. The sensing antenna patch is assembled on the inner surface of the housing and electrically connected to the proximity sensor. An orthogonal projection of the communication antenna pattern on the inner surface overlaps the sensing antenna patch on the inner surface.
    • 提供天线模块和电子设备。 电子设备包括壳体和天线模块。 外壳具有内表面。 天线模块包括电路板,接近传感器和感测天线贴片。 电路板设置在壳体中,并且具有与顶表面相对的顶表面和底表面。 电路板在顶面具有通信天线图案。 接近传感器安装在底面上。 感测天线贴片组装在壳体的内表面上并电连接到接近传感器。 通信天线图案在内表面上的正交投影与内表面上的感测天线贴片重叠。