Abstract: Provided is a beam steering system of a phased array antenna using a frequency. The beam steering system according to the present invention includes: a plurality of transmitting/receiving front-ends including phase shifters for adjusting phases of inputted signals; a plurality of array antennas emitting signals outputted from the transmitting/receiving front-ends to free space; and a wideband transmitter generating the signals inputted into the transmitting/receiving front-ends, wherein the wideband transmitter generates the signals by varying frequencies of the signals in accordance with a control signal inputted from the outside. According to the exemplary embodiment of the present invention, by generating the signals by varying the frequencies of signals inputted into the phase shifters of transmitting/receiving front-ends, it is possible to generate a beam steering angle through a simple control without changing the phase of the phase shifter.

Abstract: A mobile communication terminal is provided that can be opened or closed when the mobile communication terminal is shaken in one direction. By simply shaking the mobile communication terminal held in hand to move a weight pendulum, a second body of the terminal can be opened and closed with respect to a first body for user convenience.

Abstract: A mobile communication terminal is provided that can be opened or closed when the mobile communication terminal is shaken in one direction. By simply shaking the mobile communication terminal held in hand to move a weight pendulum, a second body of the terminal can be opened and closed with respect to a first body for user convenience.