Abstract:
Phased array antenna with high gain, beam shaping and beam scanning have become the main means of transmitting and receiving signals for modern information systems, which have been widely used in wireless communication, radar and navigation fields. To meet the development demand of modern information system for higher speed, wider coverage and more functions, the array antenna needs to take the wide bandwidth, wide beam scanning capability, low profile and planarization into account. Therefore, an 8×8 array antenna with wideband and wide-angle scanning capability based on L-type probe coupling feed structure is proposed. The array antenna adopts laminated patch and loaded equivalent cavity structure, which has excellent features such as low profile, wide operating band, high gain, high port isolation and large scanning angle. Finally, the array antenna is processed and tested. It indicates that impedance bandwidth of the array antenna with VSWR<3 is from 13 GHz to 18 GHz, and the relative bandwidth is 32. 3%, the array antenna can achieve the scanning coverage of ±60° in both plane E and H.