Patents Assigned to KMW Inc.
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Patent number: 12381306Abstract: The present invention relates to an antenna device and, particularly, comprises: a radiation cover; a plurality of radiation elements which are arranged on the front surface of the radiation cover so as to be exposed to outside air and which implement beamforming; and an antenna housing body on which the radiation cover is provided, wherein the heat, which is generated by a heating element arranged behind the radiation elements and the radiation cover, is released to the front of the antenna housing body through the front surface of the radiation cover and the radiation elements which are exposed to outside air, and thus the radiation performance of a product is remarkably improved, and the manufacturing cost of the product is reduced.Type: GrantFiled: January 21, 2023Date of Patent: August 5, 2025Assignee: KMW INC.Inventors: Duk Yong Kim, Kyo Sung Ji, Chi Back Ryu, Oh Seog Choi, Seong Man Kang, Yong Won Seo
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Patent number: 12374790Abstract: An antenna device is disclosed for implementing spatial-polarization separation of beams using a quad-polarized antenna module array. The antenna device including a quad-polarized antenna module array including first and second quad-polarized antenna modules in which signal paths of radiating elements having the same polarization direction are coupled, and configured to radiate first and second beams having different polarizations, and a polarization/separation beamforming module configured to set phases between signals to be different from each other so that the first beam and the second beam are spatially separated.Type: GrantFiled: April 6, 2022Date of Patent: July 29, 2025Assignee: KMW INC.Inventors: Duk Yong Kim, Young Chan Moon, Sung Hwan So, In Ho Kim, Oh Seog Choi
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Patent number: 12374769Abstract: The present invention relates to a dielectric ceramic filter including a dielectric block filled with a ceramic material and having an outer surface surrounded by a metal component, a resonance part provided in the dielectric block, having a space having a circular horizontal cross-section, and separated from the dielectric block by a metal film, and a tuning cover coupled to the dielectric block, configured to cover one side of the resonance part, and positioned at a portion corresponding to the resonance part, the tuning cover being configured to tune a frequency of the resonance part by being deformed in shape corresponding to a space of the resonance part, thereby increasing a production yield and implementing a high Q value when the volume remains the same.Type: GrantFiled: May 13, 2022Date of Patent: July 29, 2025Assignee: KMW INC.Inventors: Joung Hoe Kim, Sang Yoong Kim
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Publication number: 20250239752Abstract: The present invention relates to a filter for a communication device, and in particular, can simplify the complexity of the filter and achieve the performance of various filters due to comprising a notch forming unit that restricts a filtering frequency area by forming prescribed notches at the left end and right end of a passband, wherein the notches are disposed closer than the separation distance between adjacent resonance elements at a portion in which magnetic field coupling between the resonance elements is dominant or a portion in which electrical field coupling between the resonance elements is dominant among at least three adjacent resonance elements sequentially selected along the longitudinal direction of a cavity for multipath coupling.Type: ApplicationFiled: April 11, 2025Publication date: July 24, 2025Applicant: KMW INC.Inventors: Nam Shin PARK, Yeon Ho SHIN, Heok Jin SOHN, Sung Bae PARK, Jae Hong KIM
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Publication number: 20250226578Abstract: The present invention relates to a phase shifter and an antenna device comprising same.Type: ApplicationFiled: March 24, 2025Publication date: July 10, 2025Applicant: KMW INC.Inventors: Duk Yong KIM, Young Chan MOON, Sung Hwan SO, Oh Seog CHOI, Seong Man KANG, Yong Won SEO
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Patent number: 12355162Abstract: Disclosed are a method for temporal/spatial polarized beams and channel non-reciprocity correction and a multi-beam antenna apparatus using the same. According to one aspect of the present disclosure, a multi-beam antenna apparatus includes an array antenna including transmission antenna elements used for forming a plurality of transmission beams and reception antenna elements used for forming a plurality of reception beams. The multi-beam antenna apparatus separates polarized beams temporally and spatially by using two kinds of different orthogonal polarizations, while corrects a channel non-reciprocity which occurs due to temporal polarization separation.Type: GrantFiled: May 1, 2023Date of Patent: July 8, 2025Assignee: KMW INC.Inventors: Young Chan Moon, Min Seon Yun, Tae Youl Oh, Kyung Hoon Kwon
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Patent number: 12355130Abstract: The present invention relates to relates to a multi-input and multi-output antenna apparatus, and particularly, to a multi-input and multi-output antenna apparatus including a main board having an accommodation space formed in at least one region and provided in the form of a predetermined space, and a sub-board stacked on a rear surface portion of the main board and configured such that a plurality of heating elements is mounted on a front surface portion of the sub-board that is directed toward the accommodation space, in which heat generated from the heating elements is dissipated to a rear surface portion of the sub-board, which makes it possible to improve heat dissipation performance of the antenna apparatus and improve frequency filtering performance of the antenna apparatus.Type: GrantFiled: December 5, 2022Date of Patent: July 8, 2025Assignee: KMW INC.Inventors: Duk Yong Kim, Kyo Sung Ji, Chi Back Ryu, Bae Mook Jeong
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Publication number: 20250219276Abstract: The present invention relates to a filter for a communication device and a manufacturing method therefor, and, particularly, the filter comprises a single base plate, which is provided as a conductive board with a predetermined thickness or less that forms an inner side surface of a cavity for performing frequency filtering, wherein the cavity is formed by folding at least a portion of the base plate, and thus manufacturing is facilitated and overall slimming and lightening of a product can be sought.Type: ApplicationFiled: March 14, 2025Publication date: July 3, 2025Applicant: KMW INC.Inventors: Joung Hoe KIM, Sang Yoong KIM
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Publication number: 20250219275Abstract: The present invention relates to a filter for a communication device, and in particular, to a filter comprising: a filter body including a cavity that is a dielectric filling space and has an open bottom; a lower cover panel made of a first material and coupled to shield the open bottom of the filter body; and a resonator frame made of a second material, wherein the lower end of the resonator frame is coupled by being forcibly fit into a plurality of fitting through-holes that are formed in the lower cover panel so as to pass through the inside and outside of the cavity and provided, spaced apart in the longitudinal direction, in two or more rows in the width direction, and then the surroundings of the plurality of fitting through-holes are fixed inside the cavity through solder bonding, thus providing the advantage of minimizing insertion loss within the cavity.Type: ApplicationFiled: March 14, 2025Publication date: July 3, 2025Applicant: KMW INC.Inventors: Joung Hoe KIM, Sang Yoong KIM
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Patent number: 12347924Abstract: The present disclosure relates to an antenna apparatus for a base station and an adapter thereof and particularly comprises: an antenna module vertically installed to be spaced forward from a support pole by a predetermined distance so as to have a distancing space therebetween; an RRH installed on the antenna module to be positioned in the distancing space, wherein one of the upper end and the lower end thereof is hinge-coupled to the antenna module and the other of the upper end and the lower end thereof is attached to or detached from a part of the antenna module to enable electrical signal connection or disconnection while being rotated around the hinge; and an adapter for mediating the electrical signal connection and disconnection between the antenna module and the RRH. Therefore, the present disclosure provides advantages of reducing installation time and installation costs.Type: GrantFiled: March 13, 2024Date of Patent: July 1, 2025Assignee: KMW INC.Inventors: Seong Man Kang, Dae Myung Park, Hyoung Seok Yang, In Ho Kim, Kwang Seok Choi
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Publication number: 20250203816Abstract: The present invention relates to a heat dissipation apparatus for an electronic device. In particular, the heat dissipation apparatus comprises: a heat conduction panel body having formed therein a refrigerant flow space in which, while charged refrigerant changes in phase, gas-liquid circulation takes place; and an absorber which is disposed in the refrigerant flow space of the heat conduction panel body, and which distributes, while absorbing and holding the liquefied refrigerant of the refrigerant, the liquefied refrigerant in the direction of gravity or at least in a direction opposite to the direction of gravity, wherein, due to the material itself, the absorber prevents shape deformation in the direction of gravity even while maintaining the absorption rate for the liquefied refrigerant, and thus, provided is the advantage of greatly improving overall heat dissipation performance.Type: ApplicationFiled: March 7, 2025Publication date: June 19, 2025Applicant: KMW INC.Inventors: Duk Yong KIM, Kang Hyun LEE, Jong Nam KIM
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Publication number: 20250192411Abstract: Disclosed herein may be a filter for communication devices. The filter may include a base plate made of a conductive material, manufactured in an unfolded state and configured to be foldable such that, upon folding, a cavity is formed inside while simultaneously positioning a plurality of resonators to protrude by a set length in a thickness direction or a width direction in the cavity. The plurality of resonators each have a distal end portion having a wider width than a remaining portion, and include a resonance characteristic end formed by curling opposite widthwise ends of the distal end portion in a rounded shape in one thickness direction from a leading end of the remaining portion. The aforementioned configuration provides advantages of facilitating a slim product design, reducing insertion loss, and enhancing resonance characteristics.Type: ApplicationFiled: February 22, 2025Publication date: June 12, 2025Applicant: KMW INC.Inventors: Nam Shin PARK, Sung Ho JANG, Jae Hong KIM, Yeon Ho SHIN, Jeong Moon OH
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Publication number: 20250192410Abstract: Disclosed herein may be a filter for communication devices. The filter may include a base plate that is made of a conductive material, manufactured in an unfolded state and configured to be foldable such that, upon folding, a cavity is formed inside while simultaneously positioning a plurality of resonators to protrude by a set length in a thickness direction or a width direction in the cavity. The plurality of resonators may each include, at a distal end portion thereof, a resonance characteristic end that is flat to form a layer identical to a remaining portion in the cavity and has a greater width than the remaining portion. The aforementioned configuration provides advantages of facilitating a slim product design, reducing insertion loss, and enhancing resonance characteristics.Type: ApplicationFiled: February 21, 2025Publication date: June 12, 2025Applicant: KMW INC.Inventors: Nam Shin PARK, Sung Ho JANG, Jae Hong KIM, Yeon Ho SHIN, Jeong Moon OH
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Publication number: 20250192409Abstract: Disclosure herein may be a filter for communication devices. The filter may include a base plate that is made of a conductive material, manufactured in an unfolded state and configured to be foldable such that, upon folding, a cavity is formed inside while simultaneously positioning a plurality of resonators to protrude by a set length in a thickness direction or a width direction in the cavity. The plurality of resonators each include, at a distal end portion thereof, a resonance characteristic end that is bent perpendicularly to a longitudinal direction of a remaining portion and has a greater width than the remaining portion. The aforementioned configuration provides advantages of facilitating a slim product design, reducing insertion loss, and enhancing resonance characteristics.Type: ApplicationFiled: February 22, 2025Publication date: June 12, 2025Applicant: KMW INC.Inventors: Nam Shin PARK, Sung Ho JANG, Jae Hong KIM, Yeon Ho SHIN, Jeong Moon OH
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Publication number: 20250192412Abstract: Disclosure herein may be a filter for communication devices. The filter may include a base plate that is made of a conductive material, manufactured in an unfolded state and configured to be foldable such that, upon folding, a cavity is formed inside while simultaneously positioning a plurality of resonators to protrude by a set length in a thickness direction or a width direction in the cavity. The plurality of resonators may each include, at a distal end portion thereof, a resonance characteristic end that integrally connects leading ends of a pair of remaining portions extending in a thickness direction in the cavity. The aforementioned configuration provides advantages of facilitating a slim product design, reducing insertion loss, and enhancing resonance characteristics.Type: ApplicationFiled: February 22, 2025Publication date: June 12, 2025Applicant: KMW INC.Inventors: Nam Shin PARK, Sung Ho JANG, Jae Hong KIM, Yeon Ho SHIN, Jeong Moon OH
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Publication number: 20250192445Abstract: According to an embodiment of the present disclosure, provided is an antenna device comprising: at least one base substrate; a plurality of antenna elements disposed on the at least one base substrate in a height direction perpendicular to the at least one base substrate and supported by the at least one base substrate; and a radome spaced apart from the plurality of antenna elements in the height direction and configured to surround the at least one base substrate and the plurality of antenna elements, wherein the radome includes a pattern portion disposed on a surface facing the plurality of antenna elements and configured to be able to decouple electromagnetic waves radiated from the plurality of antenna elements.Type: ApplicationFiled: February 12, 2025Publication date: June 12, 2025Applicant: KMW INC.Inventors: Young Chan MOON, Sung Hwan SO, Oh Seog CHOI, Yong Won SEO, Myung Hwa KIM, Jang Soon PARK, Hyoung Seok YANG, Seong Man KANG
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Patent number: 12323176Abstract: Disclosed is a multi-band transmitter for transmitting a multi-band signal. The multi-band transmitter comprises: a pre-distortion unit including a first digital pre-distorter (DPD) which pre-distorts a first band signal and a second DPD which pre-distorts a second band signal discontinuous from the first band signal; a conversion unit which analog-converts the pre-distorted first band signal and the pre-distorted second band signal; an amplification unit including a first power amplifier (PA), which amplifies the analog-converted first band signal, and a second PA, which amplifies the analog-converted second band signal; and a feedback unit which digital-converts the amplified first band signal to feed the digital-converted first band signal back to the first DPD and digital-converts the amplified second band signal to feed the digital-converted second band signal back to the second DPD.Type: GrantFiled: August 24, 2022Date of Patent: June 3, 2025Assignee: KMW INC.Inventors: Min Seon Yun, Joon Hyong Shim, Young Chan Moon
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Publication number: 20250174866Abstract: The present invention relates to a communication device filter. Particularly, the communication device filter comprises: a frequency tuning panel comprising multiple tuning bars disposed in a dielectric material-filled space as a single layer with regard to the thickness direction so as to adjust the distance of spacing from multiple resonators disposed in the dielectric material-filled space; and a resonance substrate disposed in the dielectric material-filled space as a single layer with regard to the thickness direction such that the multiple resonators are formed as the single layer, the resonance substrate comprising a resonance frame having a rectangular edge. Accordingly, the present invention provides advantages in that not only is product slim design possible, but any increase in product weight can be prevented.Type: ApplicationFiled: January 23, 2025Publication date: May 29, 2025Applicant: KMW INC.Inventors: Joung Hoe KIM, Sang Yoong KIM
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Publication number: 20250174864Abstract: The present disclosure relates to a filter for a communication device and, more specifically, includes: a filter body that is open in the thickness direction and has formed therein part of a dielectric-filled space; a filter tuning cover that is coupled in the opened thickness direction to cover the filter body and forms the remainder of the dielectric-filled space; a resonance substrate including a resonance frame in which a plurality of resonators are arranged to form a single layer with respect to the thickness direction in the dielectric-filled space; a frequency tuning panel including a tuning frame including a plurality of tuning bars arranged in a single layer in the thickness direction in the dielectric-filled space in order to adjust a separation distance from the plurality of resonators arranged in the dielectric-filled space; and a spacer portion integrally formed with a step on one of the filter tuning cover and the frequency tuning panel.Type: ApplicationFiled: January 24, 2025Publication date: May 29, 2025Applicant: KMW INC.Inventors: Joung Hoe KIM, Sang Yoong KIM
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Publication number: 20250172351Abstract: Provided are a heat sink and a manufacturing method thereof, wherein a heat sink body and a plurality of heat dissipation fins are each manufactured separately, and then the plurality of heat dissipation fins are fixed to the heat sink body by laser welding to form the plurality of heat dissipation fins in a plate shape that is thinner and longer than the heat sink body to provide a sufficient heat dissipation surface and thereby improve heat dissipation efficiency. To this end, the heat sink structure according to the present invention comprises: a heat sink body that has, on one side, a mounting surface on which a product from which heat is to be dissipated is located, and has, on the other side, a heat dissipation surface for dissipating heat; and a plurality of heat dissipation fins which are positioned upright on the heat dissipation surface of the heat sink body and coupled thereto by laser welding.Type: ApplicationFiled: January 27, 2025Publication date: May 29, 2025Applicant: KMW INC.Inventors: Duk Yong KIM, Kang Hyun LEE, Dong Won KIM, Won Jun PARK