Optimized matching design for small antenna wideband matching network and small antenna wideband matching network thereof

The invention discloses an optimum match design of an electrically small antenna broadband matching network and the electrically small antenna broadband matching network, wherein a R-C additional damping network in a broadband matching network structure is directly connected with an electrically small antenna in parallel, and the impedance of the antenna can be changed into a new mode, which not only improves the impedance characteristics of an antenna end port and also prominently lowers the comparison between a real part and an imaginary part of the electrically small antenna, and namely the impedance of the electrically small antenna is compensated to a certain extent, which enables the electrically small antenna to be matched easily. The broadband matching network is designed through adopting an optimum method which combines a real frequency method and a direct optimization method. A better matching network structure is obtained through changing and filtering measured data of the antenna impedance from the characteristics of the electrically small antenna, and then, the optimization characteristics of the optimization algorithm are utilized to obtain each element value in the matching network structure. The standing wave ratio of the electrically small antenna with the matching network structure of the invention is smaller than 25 in a pass band, and the efficiency is bigger than 30% simultaneously, which enables the performance of the electrically small antenna to be greatly improved.