Lg Electronics Inc.

Agency for Defense Development

Greenpia Technology Inc

Kwansoo Kim

Sungryong Hong

Sungho Park

Sunam Kim

Soojin Kim

Jaehwan Kim

Yoan Shin

Taehoon Kim

Jeongin Kim

Kwanghoon Kim

Hoochul Lee

Yongwoon Eom

Beong Sung Kim

This application relates to an apparatus and method for generating a jamming signal, and a communication system. In one aspect, the method may include converting binary bits of a first communication signal to be transmitted and obtaining at least one codeword matched previously to the binary bits. The method may also include generating a second communication signal by superimposing a first conversion signal being obtained by converting the first communication signal to an up-chirp signal and a second conversion signal being obtained by converting the first communication signal to a down-chirp signal. The method further include generating a pseudo jamming signal by computing the second communication signal and the codeword.

Apparatus and method for generating jamming signal, communication system

A wireless signal digital conversion device includes: a plurality of RF signal processing units for receiving wireless signals, and adjusting the voltage levels of the wireless signals based on automatic gain values; a plurality of unit ADCs for receiving in-phase signals and quadrature phase signals of the RF signal processing units, and performing analog-to-digital conversion based on different differential reference voltages; an encoder unit for generating binary data having less bits than binary data outputted from the unit ADCs based on the binary data outputted from the unit ADCs; and an automatic gain control unit for generating automatic gain values based on the output of a spatial ADC. A terminal can be linked to an artificial intelligence module, a drone (unmanned aerial vehicle (UAV)), a robot, an augmented reality (AR) device, a virtual reality (VR) device, a device related toG services, and the like.

Wireless signal digital conversion device

A three-stage carrier is transported to an irradiation room by transporting means and is irradiated with gamma ray sources installed on ray source rack such that a product loaded therein is treated. The three-stage carrier includes a central container in a center of the three-stage carrier; an upper container formed on the central container; and a lower container formed under the central container. Here, the central container, the upper container, and the lower container are partitioned by septum, a height of the three-stage carrier is greater than a height of the ray source lack, and the central container has a height greater than a height of the upper container or a height of upper container. The better quality stability through uniform sterilization and the improved energy utilization efficiency and productivity, the reduction of cost may be achieved.

Three-stage carrier for gamma irradiation and gamma irradiation method using three-stage carrier

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Seoul, South Korea

Kwansoo Kim