A Multiband Monopole Antenna with the Inverted-Trapezoidal CPW Feeding

作者：Zhang, Quanqi^*; Li, Yuanxin; Liang, Zhixi; Tan, Hong Zhou; Long, Yunliang

来源：International Journal of Antennas and Propagation, 2014, 2014: 692465.

DOI：10.1155/2014/692465

A multi-band monopole antenna with the improved inverted-trapezoidal coplanar waveguide (CPW) feeding is presented. The antenna has a simple planar structure, and occupies an area of 15mm x 50 mm. The proposed antenna consists of an improved inverted-trapezoidal CPW-fed patch, and a series of monopole strips with different length. This monopole antenna utilizes the advantages of the CPW feeding to simplify the structure of the antenna into a single metallic level and achieve high antenna gain. The improved inverted-trapezoidal CPW-fed patch and a meander shorting strip lead to a better impedance matching result and multi-band operation. The experimental results of the proposed antenna are shown and discussed. The antenna generates two wide bands centered at about 900 and 2200 MHz to cover the GSM850/GSM900/DCS/PCS/UMTS/LTE2300/2500 bands and the 2.4GHz WLAN operation. Meanwhile the antenna covers the 4G bands of China Telecom (2370-2390MHz/2635-2655MHz), China Unicom (2300-2320MHz/2555-2575MHz) and China Mobile [phone]MHz/2320-2370MHz/2575-2635MHz), too.

• 出版日期2014
• 单位中山大学