Aperture-coupled multi-layer broadband ring-patch antenna array

作者：Honari Mohammad Mahdi^*; Abdipour Abdolali; Moradi Gholamreza

来源：IEICE Electronics Express, 2012, 9(4): 250-255.

DOI：10.1587/elex.9.250

• aperture-coupled antenna (ACA)
• array antenna
• broadband array

An aperture-coupled multi-layer broadband microstrip array antenna with coupling ring slots and modified ring patches is presented. The structure of the array consists of a 3-dB 180 degrees-phase shifter, two 1-port%26apos;s and two 2-port%26apos;s aperture-coupled microstrip antennas. All parts of the array antenna are designed for broadband operation. The array antenna works based on the back coupling to the microstrip line of 2-port aperture-coupled antenna. Simulation results of the array display encouraging properties, such as wide impedance bandwidth of 77% for vertical bar S-11 vertical bar %26lt; -10 dB and nearly stable gain. The maximum gain of the array antenna is almost 12.65 dBi at 5 GHz. The radiation efficiency, radiation pattern, side-lobe level and cross-polarization are also adequate within the impedance bandwidth between of 3.34 and 7.53 GHz.

• 出版日期2012-2-25