Kmw Inc

Oh-Seog Choi

Young-Chan Moon

In-Ho Kim

Sung-Hwan So

Hyoung-Seok Yang

Hee Seok Kim

Duk-Yong Kim

Kwang-Seok Choi

Sung-hwan So

Kang-Hyun Lee

Jung-Pil Lee

Seok Sung

In-Ha Jung

Taek-Dong Kim

Sang-Hyeong Kim

Youn-Moon Han

Heon-Jeong Jeong

Seung-Mok Han

A base station apparatus of an antenna-integrated type for use in a mobile communication network, includes an enclosure configured to have electric and electronic devices for processing signals in receipt and to form at least a part of an exterior of the base station, and an antenna configured to be installed so as to be tiltable on one surface of the enclosure, to have an outer contour defined by a radome, to include at least one radiating element for transmitting and receiving a radio signal, and an enclosure fixing device configured to fixedly mount the enclosure to an external support, and an antenna fixing apparatus configured to fixedly install the antenna on the enclosure so that the antenna is adjustably tilted with respect to the enclosure.

Antenna-integrated base station apparatus and antenna fixing equipment of mobile communication network

The present invention relates to an omnidirectional antenna for a mobile communication service, comprising: a plurality of radiation elements disposed on a horizontal surface with a mutually same angle so as to respectively radiate beams; and a power supply unit for distributing and providing a power supply signal to each of the plurality of radiation elements, wherein each of the plurality of radiation elements has a structure in which a horizontal polarization dipole radiation unit having two radiation arms is coupled to a vertical polarization dipole radiation unit having two radiation arms.

Omnidirectional antenna for mobile communication service

In the present invention, a radio communication antenna having a narrow beam width comprises: a reflecting plate provided in the form of a plate of rectangular shape; and one radiating module disposed on the reflecting plate and generating x-polarized waves. Here: the radiating module comprises four radiating elements of dipole structure; the four radiating elements are respectively disposed at four edge portions of the reflecting plate, and each comprises two radiating arms placed in the direction extending along both sides relative to the edges; and, among the four radiating elements, those radiating elements that face each other diagonally are linked in movement so as to generate one of the x-polarized waves.

Radio communication antenna having narrow beam width

The present invention relates to a variable beam control antenna for a mobile communication system, the antenna comprising: a radome formed on the front surface at which a signal is emitted; multiple emitters vertically arranged in at least one row; a frame portion for supporting the radome and the multiple emitters; and a direction-changing module which rotates each of the multiple emitters vertically and horizontally with respect to a reference point in order to change the emission direction of the multiple emitters.

Variable beam control antenna for mobile communication system

Provided is an apparatus for tuning the voltage standing wave ratio (VSWR) of a base station system in a wireless communication network, the apparatus comprising: a VSWR changing unit for changing the characteristics of the VSWR of an antenna by changing electrical signal transmission characteristics of an internal power feedline by means of an external operation, or by changing the characteristics for transceiving a radiating member; a driving unit for driving the VSWR changing unit in accordance with a control signal; a VSWR detection unit for detecting the corresponding VSWR for the installed antenna and generating a detection signal on the basis thereof; and a control unit for controlling the actions of the VSWR changing unit for changing the VSWR characteristics by controlling the operation of the driving unit, if a VSWR characteristic is determined to be in an abnormal state on the basis of the detection signal generated by the VSWR detection unit.

Apparatus for tuning voltage standing wave ratio of base station system in wireless communication network

The present invention provides a coaxial RF cable connection device that connects a coaxial RF cable to a printed circuit board having one side on which a signal transmission pattern is formed and having another side on which a ground plane is formed. The devices has central body with a support opening into which the cable is penetrated and inserted and a solder block with a pair of auxiliary bodies respectively protruded from both sides of the central body. The printed circuit board has a cutting portion formed by cutting and removing a part of the edge. A pair of through holes are formed on both sides of the cutting portion and is soldered on one side of the printed circuit board.

Cable connection device

A broadband dipole antenna is provided, in which a radiator includes a plurality of radiation pattern units for transmitting and receiving a radio signal, the radiation pattern units have radiation patterns of resonators formed thereon, and a power supply and balun structure supports and supplies power to the radiator. Each of the plurality of radiation pattern units of the radiator has at least a dual radiation pattern structure having an inner radiation pattern and an outer radiation pattern.

Broadband dipole antenna

A Multi-Line Phase Shifter (MLPS) for a vertical beam tilt-controlled antenna is provided, in which a housing is shaped into an elongated rectangular box, a fixed plate is attached on an inner bottom surface of the housing and has transmission lines printed thereon, the transmission lines forming part of a plurality of phase shifting patterns and a plurality of signal division patterns, for dividing an input signal and shifting phases of divided signals, and a mobile plate is installed within the housing, movably along a length direction at a position where the mobile plate contacts a surface of the fixed plate, and has transmission lines printed thereon, the transmission lines forming a remaining part of the plurality of phase shifting patterns for phase shifting by forming variable lines through coupling with the part of the plurality of phase shifting patterns.

Multi-line phase shifter having a fixed plate and a mobile plate in slideable engagement to provide vertical beam-tilt

A Base Station (BS) antenna in a mobile communication system is provided, in which a reflective plate has a frontal surface onto which radiation elements are attached, and at least one protector is attached onto the reflective plate, surrounding at least part of the reflective plate.

Base station antenna in a mobile communication system

A method for installing radiator elements arranged on different planes and an antenna having the radiator elements are provided, in which a first-position radiator element is placed on one plane, a second-position radiator element is placed on another plane, and power supply cables are connected to the first-position radiator element and the second-position radiator element. The power supply cables are designed to compensate for a phase difference between signals radiated in the air from the first-position radiator element and the second-position radiator element by a phase difference between signals propagated via the power supply cables.

Growing community of inventors

Gyeonggi-do, South Korea

Oh-Seog Choi