Abstract
With the rapid development of next-generation wireless communication systems, a novel smart mobile phone antenna covering Long-Term Evolution (LTE) bands is proposed based on the theory of composite rightand left-handed (CRLH) transmission lines, which can be used to design a miniaturized and multi-band antenna. In this paper, the theory of zeroth-order resonance (ZOR) is particularly recommended for antenna design to produce the equivalent left-handed capacitor and left-handed inductor. In the meantime, the ground current is also used to achieve miniaturization. The proposed ZOR metamaterial antenna can cover LTE747/GSM850/900 and DCS1800/PCS1900/UTMS/LTE2300/2600; further, it provides the performance benefits of an effective radiation pattern, as well as high gain and high efficiency, which can meet the requirements of a LTE smart mobile phone. The performance impact of the proposed antennas operating characteristics is also analyzed. The measured results of the fabricated antenna are in good agreement with the simulated antenna. They confirm that the fabricated ZOR metamaterial antenna offers the advantages of miniaturization and good performance.
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