ANTENNA TUNING DEVICE, WIRELESS COMMUNICATION SYSTEMS COMPRISING THE SAME AND METHOD FOR TUNING ANTENNA BANDWIDTH

摘要

PURPOSE: An antenna tuning device, wireless communication systems comprising the same and a method for tuning antenna bandwidth are provided to realize the optimized data transfer rate by adjusting the bandwidth of antenna and the received power of the radio signal. CONSTITUTION: A power detector(124) detects the electricity of the radio signal received by an antenna. A controller(126) generates the control signal based on the received power of the detected radio signal. A bandwidth control part(128) performs the switching according to the control signal, varying the resistance value of antenna according to the switching in order to adjusting the bandwidth of antenna. The bandwidth control part comprises a plurality of switching circuits which are serially and parallely connected by turns between the antenna and the power detector.