A Novel Miniaturized Broadband Dual-Polarized Dipole Antenna for Base Station

作者：Liu, Ying^*; Yi, Hao; Wang, Fu-Wei; Gong, Shu-Xi

来源：IEEE Antennas and Wireless Propagation Letters, 2013, 12: 1335-1338.

DOI：10.1109/LAWP.2013.2285373

• Broadband antenna
• cross dipole
• director
• dual-polarized antenna
• miniaturized antenna
• square loop

A novel dual-polarized dipole antenna for base-station applications is presented in this letter. The proposed antenna is composed of a cross dipole, a square loop, a square plate, and a small-size reflector. The square loop and the square plate act as a parasitic radiator and a director, respectively. By introducing the two parts, the impedance bandwidth of the cross dipole can be significantly enhanced, and broadside radiation patterns with narrow beam can be also obtained. Experimental results show that the proposed antenna can operate from 1.71 to 2.69 GHz with low VSWRs (< 1.5) at the two ports. High isolation (> 22 dB) and stable antenna gain (similar to 8 dB) are also achieved over the entire operating frequency band. The antenna has symmetrical radiation patterns both in vertical and horizontal planes, and the half-power beamwidth is 70 degrees +/- 5 degrees. Furthermore, the size of the proposed antenna is very compact, which is only 0.513 lambda(o) x 0.513 lambda(o) x 0.388 lambda(o) at the center of the operating frequency band.

• 出版日期2013
• 单位西安电子科技大学