Kmw Inc

Hyoung-Seok Yang

Young-Chan Moon

In-Ho Kim

Oh-Seog Choi

Sung-Hwan So

Kang-Hyun Lee

Chang-Woo Yoo

Gil-Ho Lee

Seong-Man Kang

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

A multi-band antenna apparatus according to one of various embodiments of the present invention may comprise: an antenna housing in which an antenna module having two or more frequency bands is mounted; a plurality of repeaters detachably coupled to the antenna housing according to slide movement thereof; connector parts which protrude from the antenna housing and are connected to the plurality of repeaters, respectively; and a bracket which fixes the antenna housing to an outer wall and couples the plurality of repeaters to the antenna housing in an individually detachable manner.

Multi-band antenna apparatus

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

Disclosed is a DPDT RF switch. The DPDT RF switch includes: first to fourth transmission lines for forming first to fourth ports, respectively; and first to fourth slot line pattern sections. The first slot line pattern section includes: a first slot line; and a first switching device for blocking signal transfer by short-circuiting a gap of a slot line. The third slot line pattern section includes: a third slot line; and a third switching device for blocking signal transfer by short-circuiting a gap of a slot line. The second slot line pattern section includes: a first loop-shaped slot line; a second slot line; and a second switching device for blocking signal transfer by short-circuiting a gap of a slot line. The fourth slot line pattern section includes: a second loop-shaped slot line; a fourth slot line; and a fourth switching device for blocking signal transfer by short-circuiting a gap of a slot line.

Growing community of inventors

Gyeonggi-do, South Korea

Hyoung-Seok Yang