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    Ferroelectric/paraelectric multilayer thin film, method of forming the same, and high frequency variable device using the same
    1.
    发明授权
    Ferroelectric/paraelectric multilayer thin film, method of forming the same, and high frequency variable device using the same 失效
    铁电/顺电多层薄膜，其形成方法和使用其的高频可变装置

    公开(公告)号：US07274058B2

    公开(公告)日：2007-09-25

    申请号：US11180744

    申请日：2005-07-12

    申请人： Su Jae Lee ,  Seung Eon Moon ,  Han Cheol Ryu ,  Min Hwan Kwak ,  Kwang Yong Kang

    发明人： Su Jae Lee ,  Seung Eon Moon ,  Han Cheol Ryu ,  Min Hwan Kwak ,  Kwang Yong Kang

    IPC分类号： H01L29/76 ,  H01L29/94 ,  H01L31/00

    CPC分类号： H01L21/022 ,  H01G7/06 ,  H01L21/02197 ,  H01L21/0226 ,  H01L21/31691 ,  H01L28/56 ,  H01P1/181

    摘要： A ferroelectric/paraelectric multilayer thin film having a high tuning rate of a dielectric constant and small dielectric loss to overcome limitations of a tuning rate of a dielectric constant and dielectric loss of a ferroelectric thin film, a method of forming the same, and a high frequency variable device having the ferroelectric/paraelectric multilayer thin film are provided. The ferroelectric/paraelectric multilayer thin film includes a perovskite ABO3 structure paraelectric seed layer formed on a substrate, and an epitaxial ferroelectric (BaxSr1-x)TiO3 thin film formed on the paraelectric seed layer. The high frequency variable device can realize a RF frequency/phase variable device having a high speed, low power consumption, and low prices and excellent microwaves characteristics.

    摘要翻译： 具有介电常数高的调谐率和小的介电损耗的铁电/直流多层薄膜，以克服介电常数的调谐率和铁电薄膜的介电损耗的限制，其形成方法和高 提供具有铁电/顺电多层薄膜的高频可变器件。 铁电/顺电多层薄膜包括在基板上形成的钙钛矿ABO 3结构顺电晶种层，外延铁电（Ba x Sr Sr 1-x < / SUB>）TiO 3薄膜形成在顺电种子层上。 高频可变装置可以实现具有高速度，低功耗，低价格和优异的微波特性的RF频率/相位可变装置。

    THZ-BAND FOLDED DIPOLE ANTENNA HAVING HIGH INPUT IMPEDANCE
    3.
    发明申请
    THZ-BAND FOLDED DIPOLE ANTENNA HAVING HIGH INPUT IMPEDANCE 审中-公开
    具有高输入阻抗的THZ-BAND折叠双极天线

    公开(公告)号：US20100134372A1

    公开(公告)日：2010-06-03

    申请号：US12498870

    申请日：2009-07-07

    申请人： Han Cheol Ryu ,  Kwang Yong Kang ,  Min Hwan Kwak ,  Sung Il Kim

    发明人： Han Cheol Ryu ,  Kwang Yong Kang ,  Min Hwan Kwak ,  Sung Il Kim

    IPC分类号： H01Q9/16

    CPC分类号： H01Q9/26 ,  H01Q9/285

    摘要： Provided is a folded dipole antenna including a meander line formed on a photoconductive substrate, characterized by an input impedance of several kΩ, which is much higher than that of a conventional dipole antenna, due to optimization of a horizontal length, a line interval, a width, and a line number of the meander line. Accordingly, use of the folded dipole antenna greatly improves an impedance matching characteristic between the antenna and a photomixer having an output impedance of 10 kΩ or more, and accordingly an output of a THz continuous wave.

    摘要翻译： 提供了一种折叠偶极天线，其包括形成在光电导基板上的曲折线，其特征在于由于水平长度，线间隔的优化而导致的几个k＆OHgr的输入阻抗远高于常规偶极子天线的输入阻抗， 宽度和曲折线的行号。 因此，使用折叠的偶极天线大大地改善了天线与输出阻抗为10kΩ的光混频器之间的阻抗匹配特性; 以上，因此输出THz连续波。

    Terahertz wave TX/RX module package and method of manufacturing the same
    5.
    发明授权
    Terahertz wave TX/RX module package and method of manufacturing the same 有权
    太赫兹波TX / RX模块封装及其制造方法相同

    公开(公告)号：US08053732B2

    公开(公告)日：2011-11-08

    申请号：US12537445

    申请日：2009-08-07

    申请人： Sang Kuk Choi ,  Kwang Yong Kang ,  Mun Cheol Paek ,  Min Hwan Kwak ,  Seung Beom Kang

    发明人： Sang Kuk Choi ,  Kwang Yong Kang ,  Mun Cheol Paek ,  Min Hwan Kwak ,  Seung Beom Kang

    IPC分类号： G01J5/02

    CPC分类号： G01J3/108 ,  G01J3/02 ,  G01J3/0208 ,  Y10T29/49826

    摘要： Provided are a terahertz wave transmission and reception (Tx/Rx) module package and method of manufacturing the same. The complete and separate terahertz wave Tx/Rx module package is implemented by simply aligning a silicon ball lens, a photoconductive antenna and a focusing lens, and thus facilitates generation or measurement of a terahertz wave. The terahertz wave Tx/Rx module package and method can remarkably reduce time and cost required to build a terahertz wave generation and measurement system, and simplify and miniaturize the terahertz wave generation and measurement system. In addition, characteristics of a terahertz wave generated by the photoconductive antenna can be simply measured. Furthermore, the terahertz wave Tx/Rx module package can be stored and transported with a photoconductive antenna, a silicon ball lens and a focusing lens kept aligned as they are, and also it is possible to minimize pollution of terahertz wave devices caused by surroundings.

    摘要翻译： 提供了一种太赫兹波发送和接收（Tx / Rx）模块封装及其制造方法。 通过简单地对准硅球透镜，光电导天线和聚焦透镜来实现完整和单独的太赫兹波Tx / Rx模块封装，从而有助于太赫兹波的产生或测量。 太赫兹波Tx / Rx模块封装和方法可以显着降低构建太赫兹波生成和测量系统所需的时间和成本，并简化和小型化太赫兹波生成和测量系统。 此外，可以简单地测量由光电导天线产生的太赫兹波的特性。 此外，太赫兹波Tx / Rx模块封装可以用光电导天线，硅球透镜和聚焦透镜保持原样保持并传输，并且还可以最小化由周围环境引起的太赫兹波器件的污染。

    High-temperature superconductor low-pass filter for suppressing broadband harmonics
    7.
    发明授权
    High-temperature superconductor low-pass filter for suppressing broadband harmonics 失效

    公开(公告)号：US06653917B2

    公开(公告)日：2003-11-25

    申请号：US09953445

    申请日：2001-09-17

    申请人： Kwang Yong Kang ,  Seok Kil Han ,  Min Hwan Kwak ,  Dal Ahn

    发明人： Kwang Yong Kang ,  Seok Kil Han ,  Min Hwan Kwak ,  Dal Ahn

    IPC分类号： H01P1203

    CPC分类号： H01P11/007 ,  H01P1/203 ,  H01P1/212 ,  Y10S505/701 ,  Y10S505/866

    摘要： Disclosed is a high-temperature superconductor low-pass filter for removing broadband harmonics in a wireless communication system. The high-temperature superconductor low-pass filter includes a coupled line section and a transmission line section, in which the coupled line section is connected in parallel with the transmission line section. The coupled line section has two microstrip open-stub type parallel stripe lines stacked on a high-temperature superconductor, and the transmission line section has one stripe line. Since the high-temperature superconductor low-pass filter has attenuation poles at a stopband, it has stopband characteristics to 7-8 times wider than a cutoff frequency. The high-temperature superconductor low-pass filter can easily remove sub-harmonics which are inevitably occurred in the wireless communication system.

    Packaging apparatus of terahertz device
    8.
    发明授权
    Packaging apparatus of terahertz device 失效
    太赫兹装置的包装装置

    公开(公告)号：US07755100B2

    公开(公告)日：2010-07-13

    申请号：US12176867

    申请日：2008-07-21

    申请人： Sang Kuk Choi ,  Kwang Yong Kang ,  Mun Cheol Paek ,  Min Hwan Kwak

    发明人： Sang Kuk Choi ,  Kwang Yong Kang ,  Mun Cheol Paek ,  Min Hwan Kwak

    IPC分类号： H01L29/22 ,  H01L33/00 ,  H01L29/227 ,  H01L31/0203

    CPC分类号： H01L31/0203 ,  H01L31/02325

    摘要： There is provided a packaging apparatus of a terahertz device, the apparatus including: a terahertz device having an active region at which terahertz wave is radiated or detected; a device substrate mounting the terahertz device whose active region is positioned at an opening region formed at the center of the device substrate, and electrically connecting the terahertz device and an external terminal to each other; a ball lens block arranged and fixed to an upper part of the terahertz device; and upper and lower cases receiving the device substrate mounted with the terahertz device therein and opening region vertical upper and lower portions of the active region of the terahertz device.

    摘要翻译： 提供了一种太赫兹装置的包装装置，该装置包括：具有辐射或检测太赫兹波的有源区的太赫兹装置; 安装太赫兹器件的器件基板，其有源区域位于形成在器件基板的中心的开口区域，并将太赫兹器件和外部端子彼此电连接; 布置并固定到太赫兹装置的上部的球形透镜块; 以及容纳安装有太赫兹装置的装置基板的上壳体和下壳体以及太赫兹装置的有源区域的开口区域垂直上下部分。

    PACKAGING APPARATUS OF TERAHERTZ DEVICE
    9.
    发明申请
    PACKAGING APPARATUS OF TERAHERTZ DEVICE 失效
    TERAHERTZ装置的包装装置

    公开(公告)号：US20090152699A1

    公开(公告)日：2009-06-18

    申请号：US12176867

    申请日：2008-07-21

    申请人： Sang Kuk CHOI ,  Kwang Yong Kang ,  Mun Cheol Paek ,  Min Hwan Kwak

    发明人： Sang Kuk CHOI ,  Kwang Yong Kang ,  Mun Cheol Paek ,  Min Hwan Kwak

    IPC分类号： H01L31/0203

    CPC分类号： H01L31/0203 ,  H01L31/02325

    摘要： There is provided a packaging apparatus of a terahertz device, the apparatus including: a terahertz device having an active region at which terahertz wave is radiated or detected; a device substrate mounting the terahertz device whose active region is positioned at an opening region formed at the center of the device substrate, and electrically connecting the terahertz device and an external terminal to each other; a ball lens block arranged and fixed to an upper part of the terahertz device; and upper and lower cases receiving the device substrate mounted with the terahertz device therein and opening region vertical upper and lower portions of the active region of the terahertz device.

    摘要翻译： 提供了一种太赫兹装置的包装装置，该装置包括：具有辐射或检测太赫兹波的有源区的太赫兹装置; 安装太赫兹器件的器件基板，其有源区域位于形成在器件基板的中心的开口区域，并将太赫兹器件和外部端子彼此电连接; 布置并固定到太赫兹装置的上部的球形透镜块; 以及容纳安装有太赫兹装置的装置基板的上壳体和下壳体以及太赫兹装置的有源区域的开口区域垂直上下部分。