MICROSTRIP ANTENNA TO TUNE RESONANT FREQUENCY WITH VOLTAGE CONTROL CAPABLE OF IMPROVING THE QUALITY OF COMMUNICATION

摘要

PURPOSE: A microstrip antenna to tune resonant frequency with voltage control is provided to modify a center frequency by adjusting the interval of a ground plane and a folding surface, thereby dealing with a big frequency interval changing from the surrounding environment. ;CONSTITUTION: Both end points of a microstrip antenna are folded. A control voltage is connected in the microstrip antenna. The capacity of a capacitor is transformed by the control voltage. A microcontroller adjusts a property of antenna by controlling the control voltage. The microcontroller controls the control voltage in order to minimize the loss value.;COPYRIGHT KIPO 2011