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公开(公告)号：US09712123B2
公开(公告)日：2017-07-18
申请号：US15003669
申请日：2016-01-21
Inventor： Min Park , Baek-Hyun Kim , Cheon-Soo Kim , Song-Cheol Hong , Dong-Woo Kang , Jang-Hong Choi
CPC classification number: H03F1/42 , H03F1/0277 , H03F1/56 , H03F3/193 , H03F3/245 , H03F3/45188 , H03F3/72 , H03F2200/111 , H03F2200/451 , H03F2200/555 , H03F2203/45056 , H03F2203/7209
Abstract: Provided is a power amplifier installed in wireless communication terminals and systems. According to one aspect of the present invention, a reconfigurable power amplifier capable of selecting a wide band frequency is provided. The reconfigurable power amplifier includes input transistors receiving a radio frequency (RF) signal and a reconfigurable adaptive power cell configured to select the wide band frequency by applying a common-gate bias voltage to a plurality of common-gate transistors with a plurality of separate common gates to amplify the RF signal.
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公开(公告)号：US09581688B2
公开(公告)日：2017-02-28
申请号：US14268492
申请日：2014-05-02
Inventor： Pil-Jae Park , Cheon-Soo Kim , Seong-Do Kim , Sung-Chul Woo
CPC classification number: G01S13/103 , G01S7/28 , G01S13/0209
Abstract: A pulse radar apparatus is disclosed. The pulse radar apparatus includes a pulse generation unit, a receiver unit, a synchronization unit, and a switch unit. The pulse generation unit generates a pulse based on a transmission trigger signal having a transmission pulse repetition period, and sends the pulse to a target via a transmission antenna. The synchronization unit generates the transmission trigger signal using an external reference clock, provides the transmission trigger signal to the pulse generation unit, and generates a plurality of clock signals having a time delay with respect to the transmission pulse trigger signal using the external reference clock. The switch unit selects any one clock signal from the plurality of clock signals in response to an external selection signal, and provides the selected clock signal to a receiver unit which utilizes a sampler with provided sampling clocks.
Abstract translation: 公开了一种脉冲雷达装置。 脉冲雷达装置包括脉冲发生单元，接收单元，同步单元和开关单元。 脉冲发生单元基于具有发送脉冲重复周期的发送触发信号产生脉冲，并且经由发送天线将脉冲发送到目标。 同步单元使用外部参考时钟生成发送触发信号，向脉冲发生单元提供发送触发信号，并且使用外部参考时钟产生相对于发送脉冲触发信号具有时间延迟的多个时钟信号。 开关单元响应于外部选择信号从多个时钟信号中选择一个时钟信号，并将所选择的时钟信号提供给采用具有提供的采样时钟的采样器的接收器单元。
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公开(公告)号：US20160241214A1
公开(公告)日：2016-08-18
申请号：US15004474
申请日：2016-01-22
Inventor： Seon-Ho Han , Cheon-Soo Kim , Nam Nguyen Hoai , Ki-Su Kim
CPC classification number: H03F1/3241 , H03F1/3211 , H03F3/193 , H03F3/45179 , H03F3/45475 , H03F2200/451 , H03G5/28 , H03H11/0466 , H03H11/0472
Abstract: A bandpass filter that provides a wide gain control range is provided. The bandpass filter performs channel filtering and gain control while maintaining the bandpass characteristic of the bandpass filter. The bandpass filter enables gain control for a wide signal amplitude range while maintaining performance characteristics, such as an out-of-band attenuation ratio capable of high linearity and good pass-band flatness.
Abstract translation: 提供了一种提供宽增益控制范围的带通滤波器。 带通滤波器在保持带通滤波器的带通特性的同时进行信道滤波和增益控制。 带通滤波器可以在保持诸如具有高线性度和良好的通带平坦度的带外衰减比等性能特性的同时，实现宽信号幅度范围的增益控制。
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公开(公告)号：US09698738B2
公开(公告)日：2017-07-04
申请号：US15004474
申请日：2016-01-22
Inventor： Seon-Ho Han , Cheon-Soo Kim , Nam Nguyen Hoai , Ki-Su Kim
CPC classification number: H03F1/3241 , H03F1/3211 , H03F3/193 , H03F3/45179 , H03F3/45475 , H03F2200/451 , H03G5/28 , H03H11/0466 , H03H11/0472
Abstract: A bandpass filter that provides a wide gain control range is provided. The bandpass filter performs channel filtering and gain control while maintaining the bandpass characteristic of the bandpass filter. The bandpass filter enables gain control for a wide signal amplitude range while maintaining performance characteristics, such as an out-of-band attenuation ratio capable of high linearity and good pass-band flatness.
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