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1. 发明授权

US07345551B2 Frequency synthesizer for mixing reference frequencies 失效
标题翻译：用于混合参考频率的频率合成器
公开(公告)号：US07345551B2
公开(公告)日：2008-03-18
申请号：US11353972
申请日：2006-02-15
申请人： Choong-yul Cha , Hoon-tae Kim , Chun-deok Suh
发明人： Choong-yul Cha , Hoon-tae Kim , Chun-deok Suh
IPC分类号： H04B1/26
CPC分类号： H03B21/04 , H03L7/18
摘要： A frequency synthesizer for mixing reference frequencies using at least one control signal has a local oscillator, frequency dividers for dividing a frequency generated from the local oscillator and generating at least one control signal, and a single side band (SSB) mixer for mixing the reference frequencies, using the frequency generated from the local oscillator and the control signal. The frequency synthesizer has a simplified structure, and can easily mix reference frequency signals without a need for additional power.
摘要翻译：用于使用至少一个控制信号混合参考频率的频率合成器具有本地振荡器，用于分频从本地振荡器产生的频率并产生至少一个控制信号的分频器，以及用于混合参考的单边带（SSB）混频器频率，使用从本地振荡器产生的频率和控制信号。频率合成器具有简化的结构，并且可以容易地混合参考频率信号，而不需要额外的功率。

2. 发明申请

US20060183455A1 Frequency synthesizer for mixing reference frequencies 失效
标题翻译：用于混合参考频率的频率合成器
公开(公告)号：US20060183455A1
公开(公告)日：2006-08-17
申请号：US11353972
申请日：2006-02-15
申请人： Choong-yul Cha , Hoon-tae Kim , Chun-deok Suh
发明人： Choong-yul Cha , Hoon-tae Kim , Chun-deok Suh
IPC分类号： H04B1/26
CPC分类号： H03B21/04 , H03L7/18
摘要： A frequency synthesizer for mixing reference frequencies using at least one control signal has a local oscillator, frequency dividers for dividing a frequency generated from the local oscillator and generating at least one control signal, and a single side band (SSB) mixer for mixing the reference frequencies, using the frequency generated from the local oscillator and the control signal. The frequency synthesizer has a simplified structure, and can easily mix reference frequency signals without a need for additional power.
摘要翻译：用于使用至少一个控制信号混合参考频率的频率合成器具有本地振荡器，用于分频从本地振荡器产生的频率并产生至少一个控制信号的分频器，以及用于混合参考的单边带（SSB）混频器频率，使用从本地振荡器产生的频率和控制信号。频率合成器具有简化的结构，并且可以容易地混合参考频率信号，而不需要额外的功率。

3. 发明申请

US20060170507A1 Quadrature signal generator for tuning phases of all of four generated quadrature signals 失效
标题翻译：正交信号发生器用于所有四个生成的正交信号的调谐相位
公开(公告)号：US20060170507A1
公开(公告)日：2006-08-03
申请号：US11344061
申请日：2006-02-01
申请人： Eun-chul Park , Chun-deok Suh , Choong-yul Cha
发明人： Eun-chul Park , Chun-deok Suh , Choong-yul Cha
IPC分类号： H03K3/06
CPC分类号： H03B27/00 , H03H7/21 , H03H2007/0192
摘要： A quadrature signal generator capable of phase-tuning with respect to all of four generated quadrature signals. The quadrature signal generator includes four phase tuning units each having two input terminals, one receiving a differential signal, the other being grounded, and changing a phase of the differential signal to thereby generate quadrature signals. Accordingly, it is possible to tune phases of all the four generated quadrature signals. It is also possible to prevent the amplitude of quadrature signals from being deviated from a reference value.
摘要翻译：能够相对于所有四个生成的正交信号进行相位调谐的正交信号发生器。正交信号发生器包括四个相位调谐单元，每个相位调谐单元具有两个输入端子，一个接收差分信号，另一个接地，并且改变差分信号的相位从而产生正交信号。因此，可以调整所有四个生成的正交信号的相位。也可以防止正交信号的幅度偏离参考值。

4. 发明授权

US07397317B2 Quadrature signal generator for tuning phases of all of four generated quadrature signals 失效
标题翻译：正交信号发生器用于所有四个生成的正交信号的调谐相位
公开(公告)号：US07397317B2
公开(公告)日：2008-07-08
申请号：US11344061
申请日：2006-02-01
申请人： Eun-chul Park , Chun-deok Suh , Choong-yul Cha
发明人： Eun-chul Park , Chun-deok Suh , Choong-yul Cha
IPC分类号： H03H11/16
CPC分类号： H03B27/00 , H03H7/21 , H03H2007/0192
摘要： A quadrature signal generator capable of phase-tuning with respect to all of four generated quadrature signals. The quadrature signal generator includes four phase tuning units each having two input terminals, one receiving a differential signal, the other being grounded, and changing a phase of the differential signal to thereby generate quadrature signals. Accordingly, it is possible to tune phases of all the four generated quadrature signals. It is also possible to prevent the amplitude of quadrature signals from being deviated from a reference value.
摘要翻译：能够相对于所有四个生成的正交信号进行相位调谐的正交信号发生器。正交信号发生器包括四个相位调谐单元，每个相位调谐单元具有两个输入端子，一个接收差分信号，另一个接地，并且改变差分信号的相位从而产生正交信号。因此，可以调整所有四个生成的正交信号的相位。也可以防止正交信号的幅度偏离参考值。

5. 发明授权

US07847636B2 Low noise amplifier for ultra wide band 失效
标题翻译：低噪声放大器用于超宽带
公开(公告)号：US07847636B2
公开(公告)日：2010-12-07
申请号：US12352380
申请日：2009-01-12
申请人： Choong-yul Cha , Hoon-tae Kim , Sang-gug Lee
发明人： Choong-yul Cha , Hoon-tae Kim , Sang-gug Lee
IPC分类号： H03F3/68
CPC分类号： H03F3/211 , H03F1/223 , H03F1/26 , H03F1/42 , H03F1/483 , H03F3/345 , H03F2200/294 , H03F2200/36 , H03F2200/372 , H03F2200/39
摘要： A low noise amplifier (LNA) for ultra wide band receives and amplifies identical RF signals in different frequency bands, and includes more than one pair of narrow band LNAs coupled in parallel, and a load circuit which increases load impedance of the entire circuit of the narrow band LNAs. The LNA can not only amplify the RF signal in the UWB but also obtain the low noise and the high gain that are features of the conventional narrow band LNA.
摘要翻译：用于超宽带的低噪声放大器（LNA）在不同频带中接收和放大相同的RF信号，并且包括并联耦合的多于一对窄带LNA，以及增加整个电路的负载阻抗的负载电路窄带LNA。 LNA不仅可以放大UWB中的RF信号，还可以获得作为传统窄带LNA特征的低噪声和高增益。

6. 发明申请

US20090140815A1 LOW NOISE AMPLIFIER FOR ULTRA WIDE BAND 失效
标题翻译：低噪声放大器用于超宽带
公开(公告)号：US20090140815A1
公开(公告)日：2009-06-04
申请号：US12352380
申请日：2009-01-12
申请人： Choong-yul Cha , Hoon-tae Kim , Sang-gug Lee
发明人： Choong-yul Cha , Hoon-tae Kim , Sang-gug Lee
IPC分类号： H03F3/68
CPC分类号： H03F3/211 , H03F1/223 , H03F1/26 , H03F1/42 , H03F1/483 , H03F3/345 , H03F2200/294 , H03F2200/36 , H03F2200/372 , H03F2200/39
摘要： A low noise amplifier (LNA) for ultra wide band receives and amplifies identical RF signals in different frequency bands, and includes more than one pair of narrow band LNAs coupled in parallel, and a load circuit which increases load impedance of the entire circuit of the narrow band LNAs. The LNA can not only amplify the RF signal in the UWB but also obtain the low noise and the high gain that are features of the conventional narrow band LNA.
摘要翻译：用于超宽带的低噪声放大器（LNA）在不同频带中接收和放大相同的RF信号，并且包括并联耦合的多于一对窄带LNA，以及增加整个电路的负载阻抗的负载电路窄带LNA。 LNA不仅可以放大UWB中的RF信号，还可以获得作为传统窄带LNA特征的低噪声和高增益。

7. 发明授权

US07616061B2 Low noise amplifier for ultra wide band 有权
标题翻译：低噪声放大器用于超宽带
公开(公告)号：US07616061B2
公开(公告)日：2009-11-10
申请号：US11336788
申请日：2006-01-23
申请人： Choong-yul Cha , Hoon-tae Kim , Sang-gug Lee
发明人： Choong-yul Cha , Hoon-tae Kim , Sang-gug Lee
IPC分类号： H03F3/68
CPC分类号： H03F3/211 , H03F1/223 , H03F1/26 , H03F1/42 , H03F1/483 , H03F3/345 , H03F2200/294 , H03F2200/36 , H03F2200/372 , H03F2200/39
摘要： A low noise amplifier (LNA) for ultra wide band receives and amplifies identical RF signals in different frequency bands, and includes more than one pair of narrow band LNAs coupled in parallel, and a load circuit which increases load impedance of the entire circuit of the narrow band LNAs. The LNA can not only amplify the RF signal in the UWB but also obtain the low noise and the high gain that are features of the conventional narrow band LNA.
摘要翻译：用于超宽带的低噪声放大器（LNA）在不同频带中接收和放大相同的RF信号，并且包括并联耦合的多于一对窄带LNA，以及增加整个电路的负载阻抗的负载电路窄带LNA。 LNA不仅可以放大UWB中的RF信号，还可以获得作为传统窄带LNA特征的低噪声和高增益。

8. 发明授权

US07310023B2 Frequency synthesizer 有权
标题翻译：频率合成器
公开(公告)号：US07310023B2
公开(公告)日：2007-12-18
申请号：US11386696
申请日：2006-03-23
申请人： Choong-yul Cha , Hoon-tae Kim
发明人： Choong-yul Cha , Hoon-tae Kim
IPC分类号： H03B21/02 , H04B1/26
CPC分类号： H04B1/406 , H03L7/18 , H04B1/71632
摘要： A frequency synthesizer in an ultra wide band (UWB) wireless communication system which transmits and receives data through multiband includes a frequency generation means which generates a plurality of frequency signals; and a frequency adjustment means which receives the plurality of frequency signals from the frequency generation means and generates center frequencies of all or part of sub-bands within the UWB through the frequency adjustment. Since all of the center frequencies of the sub-bands are generated, the utilization of the sub-bands can be enhanced for the wideband wireless communication. Furthermore, it is possible to enable the stable UWB communications by flexibly utilizing all of fourteen sub-bands since the sub-bands suffer less from the frequency interference in a complicated and variable wireless frequency environment.
摘要翻译：在通过多频带发送和接收数据的超宽带（UWB）无线通信系统中的频率合成器包括产生多个频率信号的频率产生装置; 以及频率调整装置，其从频率发生装置接收多个频率信号，并通过频率调整产生UWB内的全部或部分子频带的中心频率。由于产生子频带的所有中心频率，所以可以增强对于宽带无线通信的子频带的利用。此外，通过灵活地利用所有14个子带，能够实现稳定的UWB通信，因为子带在复杂且可变的无线频率环境中的频率干扰较少。

9. 发明申请

US20070008429A1 Frequency synthesizer 有权
公开(公告)号：US20070008429A1
公开(公告)日：2007-01-11
申请号：US11386696
申请日：2006-03-23
申请人： Choong-yul Cha , Hoon-tae Kim
发明人： Choong-yul Cha , Hoon-tae Kim
IPC分类号： H04N5/08
CPC分类号： H04B1/406 , H03L7/18 , H04B1/71632
摘要： A frequency synthesizer in an ultra wide band (UWB) wireless communication system which transmits and receives data through multiband includes a frequency generation means which generates a plurality of frequency signals; and a frequency adjustment means which receives the plurality of frequency signals from the frequency generation means and generates center frequencies of all or part of sub-bands within the UWB through the frequency adjustment. Since all of the center frequencies of the sub-bands are generated, the utilization of the sub-bands can be enhanced for the wideband wireless communication. Furthermore, it is possible to enable the stable UWB communications by flexibly utilizing all of fourteen sub-bands since the sub-bands suffer less from the frequency interference in a complicated and variable wireless frequency environment.

10. 发明授权

US07812644B2 Digital frequency detector and digital phase locked loop using the digital frequency detector 有权
标题翻译：数字频率检测器和数字锁相环使用数字频率检测器
公开(公告)号：US07812644B2
公开(公告)日：2010-10-12
申请号：US11971654
申请日：2008-01-09
申请人： Choong-yul Cha , Tae-wook Kim , Jae-sup Lee
发明人： Choong-yul Cha , Tae-wook Kim , Jae-sup Lee
IPC分类号： G01R25/00 , H03D13/00
CPC分类号： H03D13/003 , H03L7/091
摘要： A digital frequency detector and a digital phase locked loop (PLL) are provided. The digital frequency detector includes a first conversion unit which outputs a first frequency as first frequency information of a digital type using a first ring oscillator that operates in a high-level period of the first frequency, a second conversion unit which outputs a second frequency as second frequency information of a digital type using a second ring oscillator that operates in a high-level period of the second frequency, and an operation unit which outputs a digital frequency for the first frequency by calculating a ratio of the first frequency information to the second frequency information.
摘要翻译：提供数字频率检测器和数字锁相环（PLL）。数字频率检测器包括：第一转换单元，其使用在第一频率的高电平周期中工作的第一环形振荡器将第一频率作为数字类型的第一频率信息输出;第二转换单元，输出第二频率作为使用在第二频率的高电平时段中工作的第二环形振荡器的数字类型的第二频率信息，以及通过计算第一频率信息与第二频率的比率来输出第一频率的数字频率的操作单元频率信息。

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