دانلود رایگان مقاله مینیاتور مبتنی بر آنتن پهنای باند فوق العاده CRLH برای برنامه ارتباط بی سیم

Abstract

A novel miniaturized ultra wideband (UWB) antenna based on composite right/left-handed (CRLH) metamaterial unit cells for modern wireless communication applications is presented. The physical size of the small and compact antenna is 15×7.87×1.6 mm3 or 0.15λo ×0.07λo ×0.01λo in terms of the free-space wavelength at 3 GHz. The proposed antenna covers an impedance bandwidth of 3–10.6 GHz, which is equivalent to a fractional bandwidth of 111%. The gain and efficiency of the antenna are greater than 2.89 dBi and 38.54%, respectively, with a peak gain of 9.41 dBi and a peak efficiency of 99.93%. The characteristics of the antenna were validated with measured results obtained from a fabricated prototype to establish the proof of concept.

6. Conclusions

A miniature UWB antenna based on a CRLH MTM is demonstrated to be viable for modern wireless communication systems and UWB applications. The antenna consists of three CRLH MTM unit cells, where each unit cell is realized by embedding two I-shaped slots close to each other inside a radiating patch that is terminated to ground through an inductive spiral, which is grounded using a metal via hole. The antenna operates over a frequency span of 7.6 GHz from 3 to 10.6 GHz for S11 ≤ −10 dB. The compact antenna has dimensions of 15×7.87×1.6 mm3 (0.15λo ×0.07λo ×0.01λo, where λo is the free space wavelength at 3 GHz).