دانلود رایگان مقاله آنتن منوپل سه گانه کوچک جدید با ساختار فراکتال زیگ زاگ

Abstract

A novel monopole antenna with crinkle fractal-structure for multiband applications is presented. In this paper adding crinkle fractal leads to increasing the number of resonance frequency. The operating frequencies of the proposed antenna are 1.780/3.520/5.260 GHz. The prototype of the proposed antenna is fabricated on an inexpensive FR-4 substrate. The size of the proposed antenna is 14
14 mm2 which has crinkle shape strip on top side. The radiation pattern of the proposed antenna is nearly omnidirectional. The simulated and the experimental results are in acceptable agreement with each other and con- firm good performance for the offered antenna.

4. Conclusion

In this paper a novel fractal antenna with crinkle-structure for different applications has been reported. The antenna include crinkle fractal radiating patch and incomplete rectangular ground plane. The antenna has a easy structure and small size. The measurement results show impedance bandwidths of 189 MHz (1.691–1.880 GHz), 212 MHz (3.412–3.624 GHz), 302 MHz (5.139–5.441 GHz). The number of resonance frequencies have been increased due to adding crinkle fractal shapes. Also, the radiation patterns in both H-plane and E-plane are omnidirectional at the covered frequency bands. The proposed antenna is attractive and can be practical for various multi frequency systems.