INTERNAL ANTENNA FOR MOBILE COMMUNICATION TERMINAL

摘要

An internal antenna for a mobile communication terminal is provided to reduce a frequency mobility phenomenon due to a contact with an external user by concentrating a radiating current on the inside of the internal antenna for the mobile communication terminal and decreasing a current induced to the mobile communication terminal. An internal antenna(100) for a mobile communication terminal includes a slit resonance unit(110) and a microstrip resonance unit(130). The slit resonance unit is separated from a printed circuit board(10) by an insulator(20) coupled with one portion of the printed circuit board. The slit resonance unit that is a high conductive conductor, has a predetermined thickness, and is fixed to and supported by the insulator. The microstrip resonance unit is disposed in a slit(120) of a strip form. As the microstrip resonance unit is disposed in the slit resonance unit, a required frequency is tuned by adjusting the length of the microstrip resonance unit long or short in the slit. The slit resonance unit and the microstrip resonance unit operate independently to obtain a multi-band resonance characteristic.