Lg Electronics Inc.

Ace Technologies Corporation

Jae-Won Jang

Dong-Wan Chun

Won-Hyung Cho

Jae-Ok Seo

Ki-Soo Shin

Ki-Ro Sung

A mixed-mode cavity filter is disclosed. The disclosed cavity filter includes: at least one first cavity configured to hold a metal coaxial resonator; and at least one second cavity configured to hold a dielectric resonator, where a first coupling window is formed in a wall formed between the first cavity and the second cavity, the first coupling window includes a horizontal window formed parallel to a bottom portion and a vertical window formed perpendicularly to the bottom portion, and the horizontal window and the vertical window overlap each other in at least a partial area. A mixed-mode filter according to an embodiment of the invention can achieve a small size and a light weight while providing low losses.

Mixed-mode cavity filter

A multi-mode filter for realizing wide-band is disclosed. The multi-mode filter includes a housing; a plurality of cavities formed in the housing; a plurality of resonators located in each of the cavities; at least one connector formed through a side wall of the housing; and at least one coupling element connected to the at least one connector in the cavities, the at least one coupling element coupling the at least one connector with at least one of the resonators respectively, wherein each of the at least one coupling element has 'T' shape in view of front section and 'L' shape in view of side section.

Wide-band multi-mode filter

A stack type disk changer is capable of not only being designed to have a relatively small overall size and to be simple and mounting more many disks thereon, but also allowing a user to easily withdraw a desired tray and check disks mounted on the respective trays by withdrawing the entire trays in a stairway form.

Stack type disk changer

A disk drive includes a main frame; a cartridge slidably installed in the main frame; a plurality of trays stacked in the cartridge and slidably installed therein; an elevation unit for controlling a height of a turn table; a tray selecting unit for locking each tray to a state that each tray can be loaded or unlocking a specific tray among a plurality of locked trays to draw it out of the main frame; a loading unit for loading the specific tray, among the plurality of trays locked by the tray selecting unit to reproduce/record a disk by means of an optical pick-up unit, onto the turn table; and a driving unit for driving the cartridge, the elevation unit, the tray selecting unit and the loading unit.

Growing community of inventors

Gyeonggi-do, South Korea

Jae-Won Jang