公开(公告)号：US12244053B2

公开(公告)日：2025-03-04

申请号：US18135156

申请日：2023-04-16

Applicant: KMW INC.

Inventor： Duk Yong Kim ,  Young Chan Moon ,  Nam Shin Park ,  Sung Ho Jang ,  Jae Hong Kim ,  Joon Hyong Shim ,  Bae Mook Jeong ,  Min Seon Yun ,  Sung Hwan So ,  Yong Won Seo ,  Oh Seog Choi ,  Kyo Sung Ji ,  Chi Back Ryu ,  Seong Min Ahn ,  Jae Eun Kim

IPC: H01Q1/02 ,  H01Q1/24 ,  H01Q1/48 ,  H01Q9/04 ,  H01Q19/10 ,  H01Q21/00 ,  H01Q21/06

Abstract: The present disclosure relates to an antenna RF module, an RF module assembly including the antenna RF modules, and an antenna apparatus including the RF module assembly. Particularly, the antenna RF module includes an RF module, a radiation element module arranged on a first side of the RF filter, and an amplification unit board arranged on a second side of the RF filter, an analog amplification element being mounted on the amplification unit board. A plurality of antenna RF modules constitute the RF module assembly, and the RF module assembly and an antenna housing constitute the antenna apparatus. Accordingly, a radome that interrupts dissipation of heat to in front of an antenna is unnecessary, and heat generated from heat generating elements of the antenna apparatus is spatially separated. Thus, it is possible that the heat is dissipated in a distributed manner toward the front and rear directions of the antenna apparatus. The effect of greatly improving performance in heat dissipation can be achieved.

公开(公告)号：US10886966B2

公开(公告)日：2021-01-05

申请号：US16416041

申请日：2019-05-17

Applicant: KMW INC.

Inventor： Young Chan Moon ,  Min Seon Yun ,  Sung-hwan So

IPC: H04B1/10 ,  H04B1/7097 ,  H01Q1/24 ,  H01Q1/52 ,  H04W88/08 ,  H04B17/40 ,  H04B7/14

Abstract: Disclosed herein are a method for eliminating passive intermodulation distortion (PIMD) and an antenna apparatus using the same. According to an embodiment, the antenna apparatus includes a main antenna used for transmission and reception of an RF signal; an auxiliary antenna used for reception of an RF signal; and a passive intermodulation distortion (PIMD) eliminator configured to calculate PIMD contained in a received signal of the main antenna using a received signal of the auxiliary antenna, and to eliminate the calculated PIMD from the received signal of the main antenna.

公开(公告)号：US11936417B2

公开(公告)日：2024-03-19

申请号：US17540286

申请日：2021-12-02

Applicant: KMW INC.

Inventor： Duk Yong Kim ,  Min Seon Yun ,  Bae Mook Jeong ,  Chang Seob Choi ,  Su Won Lee

IPC: H04B1/44 ,  H04B1/04 ,  H04L5/14

CPC classification number: H04B1/44 ,  H04B1/0483 ,  H04L5/14

Abstract: The present invention relates to a time-division duplex (TDD) antenna apparatus which can reduce signal loss, and thereby minimize the noise figure (NF) of a system and extend uplink coverage of the system, by separating a transmitter circuit from a receiver circuit of the antenna apparatus, and disposing a low noise amplifier (LNA) of the receiver circuit between a reception antenna and a reception filter of the receiver. A time-division duplex antenna apparatus according to an embodiment of the present invention includes: a transmitter which includes at least one transmission antenna module and transmits a downlink signal through a first path; a receiver which includes at least one reception antenna module and receives an uplink signal through a second path that is separated from the first path without any overlapping portions thereof; and a controller which controls the transmitter and the receiver in a time-division duplex manner.

公开(公告)号：US11817932B2

公开(公告)日：2023-11-14

申请号：US17513926

申请日：2021-10-29

Applicant: KMW INC.

Inventor： Tae Youl Oh ,  Joon Hyong Shim ,  Min Seon Yun ,  Jae Young Choi ,  Kyung Hoon Kwon ,  Young Chan Moon ,  Oh Seog Choi

IPC: H04B7/06 ,  H04B7/0456 ,  H04B7/10 ,  H04B7/0408 ,  H04L5/00

CPC classification number: H04B7/0697 ,  H04B7/0469 ,  H04B7/10 ,  H04B7/0408 ,  H04L5/0007

Abstract: Disclosed are a spatial multiplexing method and apparatus using polarization in a multi-beam system.
As the spatial multiplexing method using polarization in a multi-beam system, an embodiment of the present invention provides a spatial multiplexing method including determining different phases and different polarizations to be applied to a first beam and a second beam, precoding a signal so that the first beam and the second beam have the determined different phases, and converting polarization of the precoded signal so that the first beam and the second beam have the determined different polarizations.

公开(公告)号：US11101551B2

公开(公告)日：2021-08-24

申请号：US16412336

申请日：2019-05-14

Applicant: KMW INC.

Inventor： Duk Yong Kim ,  Young Chan Moon ,  Min Sik Park ,  Chang Woo Yoo ,  Bae Mook Jeong ,  Nam Shin Park ,  Min Seon Yun

IPC: H01Q1/40 ,  H01Q1/24 ,  H01Q1/42 ,  H04B17/11 ,  H04B17/21 ,  H04B7/0452

Abstract: Provided is an antenna device including a first antenna body, and a power supply module detachably attached to the first antenna body. The power supply module is provided on a fastening region of a first radiation fin of the first antenna body.

公开(公告)号：US12143163B2

公开(公告)日：2024-11-12

申请号：US17709437

申请日：2022-03-31

Applicant: KMW INC.

Inventor： Duk Yong Kim ,  Min Seon Yun

IPC: H04B17/318 ,  H01Q1/08 ,  H01Q3/02 ,  H04B17/11

Abstract: The present invention relates to an apparatus and method for measuring signal quality of an antenna. The apparatus according to the present invention includes a communication unit configured to receive signal quality measurement data from a plurality of terminal devices disposed at predetermined positions within a network, a signal quality calculation unit configured to calculate a signal quality measurement value of an antenna based on the signal quality measurement data received from any one of the plurality of terminal devices, a rotation determination unit configured to compare a target signal quality value of the antenna with the calculated signal quality measurement value and determine a rotation direction and an angle of the antenna on the basis of a difference value between the target signal quality value and the signal quality measurement value, and a control unit configured to transmit an adjustment signal including information on the determined rotation direction and the determined angle of the antenna to a clamping device configured to adjust a rotation of the antenna.

公开(公告)号：US11888207B2

公开(公告)日：2024-01-30

申请号：US17555454

申请日：2021-12-19

Applicant: KMW INC.

Inventor： Kyo Sung Ji ,  Chang Woo Yoo ,  Bae Mook Jeong ,  Min Seon Yun ,  Jin Soo Yeo

IPC: H01Q1/02 ,  H01Q1/42

CPC classification number: H01Q1/02 ,  H01Q1/422

Abstract: An antenna apparatus is disclosed, including a lower housing, a middle housing disposed on the lower housing and having one surface formed with one or more first heat dissipation fins, a first accommodation space formed by the lower housing and the middle housing, at least one first heat-generating element disposed in the first accommodation space, one or more heat dissipation supports each disposed on the middle housing and having at least one surface formed with one or more second heat dissipation fins, and an antenna module supported on the one or more heat dissipation supports.

公开(公告)号：US11831364B2

公开(公告)日：2023-11-28

申请号：US17367364

申请日：2021-07-04

Applicant: KMW INC.

Inventor： Duk Yong Kim ,  Bae Mook Jeong ,  Chang Woo Yoo ,  Young Chan Moon ,  Nam Shin Park ,  Bum Sik Park ,  Min Seon Yun ,  Min Sik Park ,  Sung Ho Jang

IPC: H04B7/0413 ,  H01Q3/26 ,  H01Q21/00 ,  H01Q21/06 ,  H01Q21/29 ,  H01Q25/00 ,  H01Q1/02 ,  H01Q1/42 ,  H01R12/73

CPC classification number: H04B7/0413 ,  H01Q3/267 ,  H01Q21/0006 ,  H01Q21/065 ,  H01Q21/29 ,  H01Q25/001 ,  H01Q1/02 ,  H01Q1/42 ,  H01R12/73

Abstract: Provided is a multiple-input multiple-output (MIMO) antenna having a lightweight stacked structure. According to one aspect of the present invention, there is provided a MIMO antenna assembly having a lightweight stacked structure, in which a calibration network, which was provided between antenna elements and filters in the related art, is provided on one printed circuit board (PCB), together with a power amplifier and a digital circuit, and filters are closely coupled to the bottom of the PCB on which the feeding network is provided. The present invention employs a strategy in which an antenna assembly is reduced to a compact size while managing phase deviation caused due to filters at an acceptable level. According to another aspect of the present invention, there is provided a calibration method, in which transmission/reception (TX/RX) calibration may be performed by a single calibration hardware component of a MIMO antenna operated by a time division duplex (TDD) scheme and may be performed in real time during the operation of the MIMO antenna, and the MIMO antenna employing the calibration method.

公开(公告)号：US11736156B2

公开(公告)日：2023-08-22

申请号：US17367364

申请日：2021-07-04

Applicant: KMW INC.

Inventor： Duk Yong Kim ,  Bae Mook Jeong ,  Chang Woo Yoo ,  Young Chan Moon ,  Nam Shin Park ,  Bum Sik Park ,  Min Seon Yun ,  Min Sik Park ,  Sung Ho Jang

IPC: H04B7/0413 ,  H01Q3/26 ,  H01Q21/00 ,  H01Q21/06 ,  H01Q21/29 ,  H01Q25/00 ,  H01Q1/02 ,  H01Q1/42 ,  H01R12/73

CPC classification number: H04B7/0413 ,  H01Q3/267 ,  H01Q21/0006 ,  H01Q21/065 ,  H01Q21/29 ,  H01Q25/001 ,  H01Q1/02 ,  H01Q1/42 ,  H01R12/73

Abstract: Provided is a multiple-input multiple-output (MIMO) antenna having a lightweight stacked structure. According to one aspect of the present invention, there is provided a MIMO antenna assembly having a lightweight stacked structure, in which a calibration network, which was provided between antenna elements and filters in the related art, is provided on one printed circuit board (PCB), together with a power amplifier and a digital circuit, and filters are closely coupled to the bottom of the PCB on which the feeding network is provided. The present invention employs a strategy in which an antenna assembly is reduced to a compact size while managing phase deviation caused due to filters at an acceptable level. According to another aspect of the present invention, there is provided a calibration method, in which transmission/reception (TX/RX) calibration may be performed by a single calibration hardware component of a MIMO antenna operated by a time division duplex (TDD) scheme and may be performed in real time during the operation of the MIMO antenna, and the MIMO antenna employing the calibration method.

公开(公告)号：US11088731B2

公开(公告)日：2021-08-10

申请号：US16412426

申请日：2019-05-15

Applicant: KMW INC.

Inventor： Duk Yong Kim ,  Bae Mook Jeong ,  Chang Woo Yoo ,  Young Chan Moon ,  Nam Shin Park ,  Bum Sik Park ,  Min Seon Yun ,  Min Sik Park ,  Sung Ho Jang

IPC: H04B7/0413 ,  H01Q3/26 ,  H01Q21/00 ,  H01Q21/06 ,  H01Q21/29 ,  H01Q25/00 ,  H01Q1/02 ,  H01Q1/42 ,  H01R12/73

Abstract: Provided is a multiple-input multiple-output (MIMO) antenna having a lightweight stacked structure. According to one aspect of the present invention, there is provided a MIMO antenna assembly having a lightweight stacked structure, in which a calibration network, which was provided between antenna elements and filters in the related art, is provided on one printed circuit board (PCB), together with a power amplifier and a digital circuit, and filters are closely coupled to the bottom of the PCB on which the feeding network is provided. The present invention employs a strategy in which an antenna assembly is reduced to a compact size while managing phase deviation caused due to filters at an acceptable level. According to another aspect of the present invention, there is provided a calibration method, in which transmission/reception (TX/RX) calibration may be performed by a single calibration hardware component of a MIMO antenna operated by a time division duplex (TDD) scheme and may be performed in real time during the operation of the MIMO antenna, and the MIMO antenna employing the calibration method.