Analysis and Design of Novel 2-D Transmission-Line Metamaterial and Its Application to Compact Dual-Band Antenna

作者：Cai, Tong^*; Wang, Guang-Ming; Liang, Jian-Gang

来源：IEEE Antennas and Wireless Propagation Letters, 2014, 13: 555-558.

DOI：10.1109/LAWP.2014.2312313

• Complementary split-ring resonators (CSRRs)
• dual-band dual-mode antenna
• frequency manipulation
• miniaturization degrees

A novel 2-D transmission-line metamaterial (TL-MTM) is proposed consisting of two-turns complementary spiral resonators (CSRs) and mushroom structure. For characterization, the circuit parameters are extracted, and the unique 2-D left-handed characteristics are theoretically investigated and further verified by eigenmode calculation. Moreover, a concept of compact factor measuring the miniaturization degrees is first proposed, indicating an efficiency method toward the design of electrically smaller structures. For application, a dual-band and dual-mode antenna operating at n = 0 (2.4 GHz, Bluetooth band) and n = +1 (3.5 GHz, WiMAX band) is designed, fabricated, and measured by inserting a 2-D CSRs-loaded TL-MTM cell into the conventional microstrip patch. As a result, the antenna exhibits good impedance matches at both bands feeding with a two-annular-rings slot and comparable radiation gains of 2.45 and 7.65 dB. Also, the antenna is compact, occupying an area of only. 0.16 lambda(0) x 0.16 lambda(0). In addition, it is more convenient to realize frequency manipulation by inserting CSRs.

• 出版日期2014
• 单位中国人民解放军空军工程大学