A Dual-Beam Eight-Element Antenna Array With Compact CPWG Crossover Structure

作者：Liu, Peiqin^*; Zhang, Zhijun; Li, Yue; Feng, Zhenghe

来源：IEEE Antennas and Wireless Propagation Letters, 2017, 16: 1269-1272.

DOI：10.1109/LAWP.2016.2632123

• Antenna array
• coplanar waveguide with ground crossover
• dual-beam
• feeding network

In this letter, a dual-beam eight-element antenna array is proposed with compact coplanar waveguide with ground (CPWG) crossover structure. The feeding network is composed of a microstrip-line feeding network with four 90 degrees hybrids and a CPWG feeding network with compact crossover structures. Compared to the conventional Butler matrix feeding network, the proposed network has fewer 90 degrees hybrids and circuit is less complex. By exciting different port of the feeding network, the eight-element antenna can be excited by phase step of 22.5 degrees or -22.5 degrees and achieve two beams pointing at two different directions. The measured gain is 10.2 dBi, and beam directions of the two peaks are +/-7 degrees at 5.8 GHz.

• 出版日期2017
• 单位清华大学