The design of high gain and miniaturization microstrip antenna array for RFID reader

摘要

Aiming at the problem of low gain for traditional RFID microstrip antenna, this paper has designed a 2¿¿2 microstrip antenna array with simple structure, integration, miniaturization and a center work frequence of 2.45GHz. The antenna array adopts coaxial cable as the feeder and a simple impedance matching network is designed which is composed of some T-shaped structure to match with 50 ohm coaxial line. The results of simulation and experimental show that the maximum gain of antenna is 13.9dB.