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    BACKWARD-WAVE OSCILLATOR IN COMMUNICATION SYSTEM
    2.
    发明申请
    BACKWARD-WAVE OSCILLATOR IN COMMUNICATION SYSTEM 有权
    通信系统中的后向波振荡器

    公开(公告)号：US20150061784A1

    公开(公告)日：2015-03-05

    申请号：US14475802

    申请日：2014-09-03

    Applicant: ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTE

    Inventor： Ju Yeon HONG ,  Young Jun CHONG ,  Jeong Hae LEE ,  Dong Jin KIM

    IPC: H01J25/46

    CPC classification number: H01J25/46 ,  H01J23/24 ,  H01J25/40

    Abstract: Provided is a backward-wave oscillator in a communication system, including a waveguide formed of a metamaterial. A unit structure of the waveguide may include: a top plate; a short-circuited stub; a bottom plate separated at a predetermined gap from the top plate, and having the short-circuited stub formed in the center thereof; a first metal pillar connecting the top plate at a first port positioned on one surface based on the short-circuited stub to the bottom plate at a second port positioned on the opposite surface of the first port based on the short-circuited stub; and a second metal pillar separated from the first metal pillar, and connecting the top plate at the second port to the bottom plate at the first port.

    Abstract translation: 提供了一种通信系统中的反向波振荡器，包括由超材料形成的波导。 波导的单元结构可以包括：顶板; 短路短路 与顶板隔开预定间隙的底板，其中心形成有短路短截线; 第一金属支柱，其基于所述短路短截线将位于一个表面上的第一端口连接到位于所述第一端口的相对表面上的第二端口处的所述底板，所述第二端口基于所述短路短截线; 以及与第一金属柱分离的第二金属柱，并且将第二端口处的顶板连接到第一端口处的底板。

    BANDPASS FILTER OF RF COMMUNICATION SYSTEM
    3.
    发明申请
    BANDPASS FILTER OF RF COMMUNICATION SYSTEM 审中-公开
    射频通信系统的BANDPASS滤波器

    公开(公告)号：US20130293318A1

    公开(公告)日：2013-11-07

    申请号：US13753649

    申请日：2013-01-30

    Applicant: ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTE

    Inventor： Ju Yeon HONG ,  Young Jun CHONG

    IPC: H03H7/01

    CPC classification number: H03H7/0115 ,  H03H7/1708 ,  H03H7/175 ,  H03H7/1775

    Abstract: The present invention relates to the bandpass filter of an RF communication system. The bandpass filter embodies a dual band characteristic by combining an equilibrium zero-order resonator and a non-equilibrium zero-order resonator, provides transmission zero using a cross-coupling structure near a pass band, and also has a neighboring signal blocking characteristic.

    Abstract translation: 本发明涉及RF通信系统的带通滤波器。 带通滤波器通过组合平衡零级谐振器和非平衡零级谐振器来实现双频带特性，使用在通带附近的交叉耦合结构提供传输零，并且还具有相邻的信号阻塞特性。

    PROPAGATION CHANNEL SIMULATION METHOD AND APPARATUS
    5.
    发明公开
    PROPAGATION CHANNEL SIMULATION METHOD AND APPARATUS 审中-公开

    公开(公告)号：US20240214093A1

    公开(公告)日：2024-06-27

    申请号：US18514179

    申请日：2023-11-20

    Applicant: ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTE

    Inventor： Jun Seok KIM ,  Jong Soo LIM ,  Young Jun CHONG ,  Ju Yeon HONG

    IPC: H04B17/391 ,  H04B17/00

    CPC classification number: H04B17/3912 ,  H04B17/0087

    Abstract: Exemplary embodiments provide a method of correcting a result of a ray tracing-based propagation channel simulation. The method of correcting propagation channel simulation data, includes: determining an intensity error value of a propagation channel simulation model for a propagation path associated with each object in a space for which a three-dimensional (3D) environment map is given and storing the intensity error value in a storage device; performing a propagation channel simulation for an arbitrary pair of a transmitter position and a receiver position in the space to obtain multipath components; determining an object having influenced propagations of the multipath components in the space; and correcting an intensity of at least one of the multipath components by applying the intensity error value associated with a determined object stored in the storage device.

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