Emw Co., Ltd.

Gi Ho Kim

Byung Hoon Ryou

Won Mo Sung

Won Mo Seong

Seung Up Seo

Jeong Keun Ji

A phase lag cell and an antenna including the same are disclosed. A phase lag cell according to one embodiment of the present invention comprises: a plane reflector; a substrate spaced apart and positioned at a predetermined distance from the reflector; and a phase lag circuit formed at one side of the substrate such that L-shaped patterns are formed to be vertically and horizontally symmetrical around a cross-shaped slot, and a stub having a predetermined length is extended from the end of each L-shaped pattern.

Phase lag cell and antenna including same

A transmission type antenna includes a transmission type structure for transmitting and radiating an incident radio wave, a power feeding body for radiating the radio wave to the transmission type structure or receiving the incident radio wave, a drive shaft for moving or tilting the power feeding body, a body for providing a moving path of the power feeding body through the drive shaft, and a control unit, connected through the drive shaft to the power feeding body, for controlling the movement and tilt of the drive shaft to thereby determine the tilling direction of the power feeding body.

Transmission type antenna

There is herein disclosed an interdigital capacitor, an inductor, and an LH transmission line and a coupler using the interdigital capacitor and the inductor. The interdigital capacitor comprises two finger sets which are substantially disposed in parallel with each other. Fingers of each finger set are overlapped at outer edges thereof with each other to thereby generate capacitance. The inductor is formed substantially spirally inside the transmission line, so that it can have a large inductance in a compact shape and can be used in a broad frequency band. The LH transmission line has a broad frequency band in a compact shape, which includes interdigital capacitors connected in series with each other and inductors connected in parallel with each other. In addition, the coupler employing the LH transmission line has an excellent couplability.

Transmission line with left-hand characteristics including an interdigital capacitor with partially overlapping fingers

There is provided an antenna implementing a first 0-th order resonant frequency using a first radiator to which power is fed through parallel inductors of helical structures, and implementing a second 0-th order resonant frequency using a second radiator to which power is couple-fed through radiation elements put into the helical structures.

Meta material antenna using coupling in helical structure

The present invention provides a multiple band antenna, including a first radiation element adapted to resonate at a first resonant frequency band by employing a resonant length, which is reduced by a coupling effect with a neighboring radiation element, a power feed unit coupled to one lower side of the first radiation element, a first inductor coupled in series to the other lower side of the first radiation element, a second radiation element adapted to face the first radiator to thereby obtain the coupling effect, wherein the second radiation element has a predetermined lower portion coupled to the first inductor, a second inductor having one end coupled in series to a predetermined upper portion of the second radiation element, and a third radiation element coupled to the other end of the second inductor, wherein the third radiation element operates as one radiation element together with the second radiation element and resonates at a second frequency band.

Growing community of inventors

Anyang-si, South Korea

Gi Ho Kim