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    Ultrahigh frequency traveling-wave switch
    1.
    发明授权
    Ultrahigh frequency traveling-wave switch 有权

    公开(公告)号：US12040788B2

    公开(公告)日：2024-07-16

    申请号：US17623040

    申请日：2019-12-12

    Applicant: Korea Electronics Technology Institute

    Inventor： Ki Jin Kim ,  Kwang Ho Ahn ,  Soo Chang Chae

    IPC: H03K17/693 ,  H03K17/687

    CPC classification number: H03K17/693 ,  H03K17/6871

    Abstract: Provided is a switch having a structure having an excellent isolation characteristic even without a limiter in an ultrahigh frequency hand used for a military component. A switch according to an embodiment of the present invention comprises: multiple transistors which are connected in parallel to a path from an input terminal toward an output terminal and perform switching; and a first transmission line provided between the input terminal and a node on a path to which a first transistor is connected. By the present invention, switching can be performed in an ultrahigh frequency such as W-band while a GaN transistor is used, an insertion loss is low, an isolation characteristic is excellent, and eventually efficiency of an ultrahigh frequency circuit can be further enhanced.

    Bonding wire impedance matching circuit
    2.
    发明授权
    Bonding wire impedance matching circuit 有权
    接线阻抗匹配电路

    公开(公告)号：US09118301B2

    公开(公告)日：2015-08-25

    申请号：US13716406

    申请日：2012-12-17

    Applicant: KOREA ELECTRONICS TECHNOLOGY INSTITUTE

    Inventor： Ki Jin Kim ,  Kwang Ho Ahn ,  Sang Hoon Park ,  Jong Won Yu ,  Hyung Sung Tae

    IPC: H03H7/38 ,  H01P5/02

    CPC classification number: H03H7/38 ,  H01P5/028

    Abstract: An impedance matching circuit is provided. The present impedance matching circuit is able to match impedance using a transformer which is arranged inside a dielectric substrate and arranged to overlap with a bonding pad area and an end of a transmission line, thereby enabling transmitting signals at a desired frequency with a minimum insertion loss without using a very thin transmission line which is several to dozens of μm wide or specially designed antennas in order to compensate for inductance. Thus, the present impedance matching circuit may be applied to various millimeter bands.

    Abstract translation: 提供阻抗匹配电路。 本阻抗匹配电路能够使用布置在电介质基板内部并且布置成与接合焊盘区域和传输线的端部重叠的变压器来匹配阻抗，从而能够以期望的频率以最小的插入损耗发送信号 而不使用几十微米宽或特别设计的天线的非常薄的传输线，以补偿电感。 因此，本阻抗匹配电路可以应用于各种毫米波段。

    5G dual port beamforming antenna
    3.
    发明授权
    5G dual port beamforming antenna 有权

    公开(公告)号：US12088018B2

    公开(公告)日：2024-09-10

    申请号：US17623093

    申请日：2020-12-22

    Applicant: Korea Electronics Technology Institute

    Inventor： Ki Jin Kim ,  Kwang Ho Ahn ,  Soo Chang Chae

    IPC: H01Q3/26 ,  H01Q9/04 ,  H04B7/06

    CPC classification number: H01Q3/26 ,  H01Q9/0407 ,  H04B7/0617

    Abstract: Provided is a 5G dual port beamforming antenna. The beamforming antenna according to an embodiment of the present disclosure includes a plurality of patch antennas, and the patch antenna includes: a first patch positioned on an upper portion; a second patch positioned on a left side under the first patch and having a plurality of feeding ports formed thereon; a third patch positioned on an upper portion of a right side of the second patch; and a fourth patch positioned on a lower portion of the right side of the second patch. Accordingly, 3D wide angle beamforming is possible in an antenna to be used in 5G mobile communication systems, military radar systems, etc.

    Hybrid type transceiver for broadband large area beamforming
    5.
    发明授权
    Hybrid type transceiver for broadband large area beamforming 有权

    公开(公告)号：US10411875B2

    公开(公告)日：2019-09-10

    申请号：US16180487

    申请日：2018-11-05

    Applicant: Korea Electronics Technology Institute

    Inventor： Ki Jin Kim ,  Kwang Ho Ahn

    IPC: H04L7/02 ,  H04B1/38 ,  H01Q3/26 ,  H01Q3/38 ,  H01Q21/00

    Abstract: A hybrid type transceiver for broadband large area beamforming is provided. A communication device includes: antennas; first phase shifters (PSs) configured to adjust respective phases of reception signals received via the antennas; and a first time delay (TD) configured to adjust delays for the reception signals the phases of which are adjusted at the first PSs. Accordingly, in designing a broadband communication system using a large area array antenna, the structure of the system can be simplified, a size can be reduced, power consumption can be reduced, and a resolution of the system can be enhanced.

    Ultra-small size broadband coupler
    7.
    发明授权
    Ultra-small size broadband coupler 有权

    公开(公告)号：US12244051B2

    公开(公告)日：2025-03-04

    申请号：US17877165

    申请日：2022-07-29

    Applicant: Korea Electronics Technology Institute

    Inventor： Ki Jin Kim ,  Kwang Ho Ahn ,  Soo Chang Chae

    IPC: H01P5/18 ,  H01Q7/00

    Abstract: There is provided an ultra-small size broadband coupler. A Lange coupler according to an embodiment includes: first lines which are formed in a spiral shape, and have a first port and a second port formed at one end thereof and have connection ends formed at the other end thereof; and second lines which are formed in a spiral shape, and have connection ends formed at one end thereof to be connected to the connection ends of the first lines, and have a third port and a fourth port formed at the other end thereof. Accordingly, the Lange coupler maintains broadband characteristics while minimizing its area, so that it is possible to design a small component for mobile communication and to noticeably reduce an insertion loss.

    Wireless repeater
    8.
    发明授权
    Wireless repeater 有权

    公开(公告)号：US11736183B2

    公开(公告)日：2023-08-22

    申请号：US17337779

    申请日：2021-06-03

    Applicant: Korea Electronics Technology Institute

    Inventor： Se Hwan Choi ,  Kwang Ho Ahn

    IPC: H04B7/155 ,  H04B7/0413

    CPC classification number: H04B7/155 ,  H04B7/0413

    Abstract: A repeater is provided. The repeater includes: a hybrid butler matrix configured to perform beamforming of a MIMO antenna for transmitting and receiving a base station signal; a hybrid butler matrix configured to perform beamforming of a MIMO antenna for transmitting and receiving a user terminal signal; and a signal processor configured to amplify a signal to be transmitted and received through the hybrid butler matrix. Accordingly, it is easy to manufacture a repeater, heat emission and power consumption can be reduced, and a cost of production can be reduced.

    RF switch with transformer and switching method thereof
    9.
    发明授权
    RF switch with transformer and switching method thereof 有权
    具有变压器的RF开关及其开关方法

    公开(公告)号：US09293797B2

    公开(公告)日：2016-03-22

    申请号：US14080294

    申请日：2013-11-14

    Applicant: KOREA ELECTRONICS TECHNOLOGY INSTITUTE

    Inventor： Ki Jin Kim ,  Kwang Ho Ahn ,  Sang Hoon Park

    IPC: H01P1/10 ,  H03K17/693 ,  H04B1/48

    CPC classification number: H01P1/10 ,  H03K17/693

    Abstract: A radio frequency (RF) switch with a transformer and a switching method thereof are provided. The RF switch includes a transmitting end transformer having a primary side connected to a transmitting end and a secondary side connected to an antenna; and a receiving end transformer having a primary side connected to the antenna and a secondary side connected to a receiving end. In a transmission mode, the transmitting end transformer is tuned on, and, in a reception mode, the receiving end transformer is turned on. Accordingly, since switching is performed based on transformers rather than transistors connected in series, the RS switch, which can achieve high linearity and low insertion loss as well as high isolation, can be implemented.

    Abstract translation: 提供具有变压器的射频（RF）开关及其切换方法。 RF开关包括：发射端变压器，其具有连接到发射端的初级侧和连接到天线的次级侧; 以及接收端变压器，其初级侧连接到天线，次级侧连接到接收端。 在发送模式中，发送端变压器被调谐，并且在接收模式下接收端变压器被接通。 因此，由于基于变压器而不是串联连接的晶体管进行切换，所以可以实现可以实现高线性度和低插入损耗以及高隔离度的RS开关。

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