Simulation and design of multi-band planar meandered monopole antenna for mobile phone application

In this paper, a novel multi-band planar monopole antenna for mobile phone application is presented. With the meandered structure, the antenna generates three resonant frequencies at the first resonant mode (0.25λ mode) and a resonant frequency at the dual-resonant 0.5λ mode. The total bandwidth (for S11<; -7.5 dB) is more than 900 MHz, which achieves operation at six different working bands covering the GSM/DCS/PCS/UMTS/WiBro/ISM bands. The simulated results show a good impedance matching and radiation. With the planar structure, the antenna can be easily built in mobile phone.