Kmw Inc

Chi Back Ryu

Kyo Sung Ji

Duk Yong Kim

Min Soo Kim

Bae Mook Jeong

Oh Seog Choi

Yong Won Seo

Min Seon Yun

Jae Hong Kim

Sung Ho Jang

Young Chan Moon

Joon Hyong Shim

Sung Hwan So

Jae Hyun Park

Seong Man Kang

Hye Yeon Kim

In Hwa Choi

Youn Jun Cho

Kyu Chul Choi

Jeong Hyun Choi

Won Jun Park

Nam Shin Park

Hyoung Seok Yang

Seong Min Ahn

Jae Eun Kim

Hee Seok Kim

In Ho Kim

Min Sik Park

Joung-hoe Kim

Jae Ho Jang

Sang Hyo Kang

Myung Hwa Kim

Yeong Min Lee

A quad-polarized antenna system according to the present invention comprises a plurality of RF chains, and an antenna array in which rows of first dual-polarized antenna units and rows of second dual-polarized antenna units are alternately arranged in a horizontal direction. The first dual-polarized antenna unit and the second dual-polarized antenna unit have different dual polarization characteristics from each other. The rows of first dual-polarized antenna units are used to form at least one first beam and at least one second beam which have +/−45° polarizations, and the rows of second dual-polarized antenna units are used to form at least one third beam and at least one fourth beam which have 0°/90° polarizations. The first beam, the second beam, the third beam, and the fourth beam are formed towards different spatial directions, and the first and third beams correspond to main lobes, and the second and fourth beams correspond to grating lobes.

Quad-polarized antenna array and spatial polarization separation using the same

The present invention relates to a multi-functional support pole assembly. In particular, the present invention provides the advantage of improving operational reliability as well as preventing deterioration of urban area appearance, by comprising: a pole body provided in a hollow form and having a plurality of antenna mounting grooves formed through cutting so as to be spaced apart at a predetermined angle in a circumferential direction such that a plurality of antenna devices can be installed in the circumferential direction; and ventilation panels which are attached to remaining portions of the antenna mounting grooves not occupied by the plurality of antenna devices, and have a plurality of ventilation holes for introducing external air into the interior of the pole body.

Multi-functional support pole assembly

Proposed are an antenna RF module and an antenna apparatus including the antenna RF modules. The antenna RF module includes an amplification unit module which is arranged between a main board and an RF filter and into which at least one analog amplification element is built. The amplification unit module includes an amplification unit body, an amplification unit board seated inside the amplification unit body, a front end portion of an edge of the amplification unit board being connected to the RF filter for signal transmission and a rear end portion of the edge thereof being connected to the main board for signal transmission, an amplification unit cover provided in such a manner as to cover the amplification unit board, and a vapor chamber positioned between the amplification unit body and the amplification unit board or between the amplification unit cover and the amplification unit board and serving as a medium for transferring heat generated from analog amplification elements mounted on the amplification unit board.

RF module for antenna and antenna apparatus comprising same

An RF connector includes: a first printed circuit board with mounted devices; a first bridge assembly mounted adjacent to one side of the first board and including signal transmission pins; a second printed circuit board spaced apart from the first board; connection terminals adjacent to the second board contacting surfaces of the signal pins; a push bar applying force to maintain contact between the pins and terminals; and a metal shielding plate fixed to the push bar and second board, shielding portions of both. Shielding walls may be disposed between adjacent signal pins, improving isolation. The push bar has a wedge shape, creating a bending unit in the transmission pins according to lever principles. The connector transmits RF signals, power, and digital signals on the same plane, reducing size and cost while effectively processing signals in various frequency bands without expensive multi-connectors.

RF connector capable of processing signals in various frequency bands

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.

RF module for antenna, RF module assembly, and antenna apparatus including same

Proposed are an antenna RF module and an antenna apparatus including the antenna RF modules. The antenna RF module includes an RF filter arranged on a front surface of a main board, a radiation element module arranged on a front surface of the RF filter, at least one reflector grill pin arranged between the RF filter and the radiation element module and grounding (GND) the radiation element module, outside air being introduced from in front of the RF filter to in back of the RF filter or being discharged from in back of the RF filter to in front of the RF filter through the at least one reflector grill pin, and a radome cover combined with the front surface of the RF filter and protecting the radiation element module from the outside. The antenna RF module provides the advantage of greatly improving overall performance in heat dissipation.

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.

Antenna device

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.

Multi input and multi output antenna apparatus

The present invention relates to an antenna device, comprising: a front housing including antenna arrangement units in which at least one radiation element is disposed on the front sides thereof, and heat dissipation units formed between adjacent antenna arrangement units and being exposed to outside air to transfer heat generated from the rear side to the front; and a rear housing coupled to the front housing and provided with a filter for filtering RF signals and a main board on which an RF element is mounted, wherein the heat generated from the filter is transferred to the front of the front housing through the contact with the back surface of the front housing by using the filter as a heat transfer medium.

Antenna RF module, RF module assembly, and antenna device including same

A massive multiple-input multiple-output (MIMO) antenna apparatus and a heat dissipation device therefor are disclosed. The present disclosure according to at least one embodiment provides a massive MIMO antenna apparatus including a board, a first blowing unit, and a second blowing unit. The board has at least one board surface that holds a distributed arrangement of a plurality of heat-generating components, has a width and a length longer than the width, and includes a first section having a first amount of heat generation and a second section having a second amount of heat generation greater than the first amount of heat generation, the first section and the second section being partitioned along a length direction of the board.

Multiple-input multiple-output antenna apparatus and heat dissipation device therefor

A PCB assembly is disclosed herein. An embodiment of the present disclosure provides a printed circuit board (PCB) assembly on which a plurality of devices is mounted, including: a power supply area disposed at one side of a main printed circuit board; a first area positioned in another direction of the main printed circuit board from the power supply area and including the plurality of devices; a second area positioned in another direction of the main printed circuit board from the first area and including the plurality of devices; a third area positioned in another direction of the main printed circuit board from the second area and including the plurality of devices; and a bridge printed circuit board receiving power from the power supply area and disposed vertically to the main printed circuit board, wherein the bridge printed circuit board crosses the first area, the second area, and the third area, and transmits power and a signal to at least one area.

PCB assembly

Antenna

Growing community of inventors

Hwaseong-si, South Korea

Chi Back Ryu