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Open Access Article
1 - Design, simulation and performance comparison of radating elements of reflect array antenna
iman aryanian gholamreza moradi abdolali abdipourIn this paper, the role of radiation elements in the performance of reflect array antenna is studied, and each element is designed and simulated and the phase response is compared. Also, the relations needed for designing reflect array antenna are discussed and one samp MoreIn this paper, the role of radiation elements in the performance of reflect array antenna is studied, and each element is designed and simulated and the phase response is compared. Also, the relations needed for designing reflect array antenna are discussed and one sample reflect array antenna is designed in the KU band and the results are presented. Manuscript profile -
Open Access Article
2 - Wideband Log Periodic-Microstrip Antenna with Elliptic Patches
hamed ghanbari foshtami Ali Hashemi Talkhouncheh Hossein EmamiA broadband microstrip antenna based on log periodic technique was conceived and demonstrated practically. The antenna exhibits a wideband characteristic comparing with other microstrip antennas. Over the operation frequency range, i.e. 2.5-6 GHz, a 50 Ω input impedanc MoreA broadband microstrip antenna based on log periodic technique was conceived and demonstrated practically. The antenna exhibits a wideband characteristic comparing with other microstrip antennas. Over the operation frequency range, i.e. 2.5-6 GHz, a 50 Ω input impedance has been considered. Manuscript profile -
Open Access Article
3 - A Multi-Frequency Miniaturized Microstrip Fractal Antenna
S. Jam A. MehboodiFor further and various applications of communication systems, we lead to using the overall of electromagnetic spectrum. Also, because of the developing f multiband wireless systems, antenna designers are enforced to design antennas matched to the operation in multi-ban MoreFor further and various applications of communication systems, we lead to using the overall of electromagnetic spectrum. Also, because of the developing f multiband wireless systems, antenna designers are enforced to design antennas matched to the operation in multi-band and multi-frequency. On the other hand, nowadays, the use of light-weight, simple, small and inexpensive antennas is an essential requirement for covering multi bands. In this paper, a microstrip antenna is designed and suggested fractal-based and utilized FR4 substrate with small size and light, and also ability to resonance in multi-frequency by increasing fractal repetitions and self-similarity property. Therefore, this proposed structure causes the antenna resonance in more frequencies, and also leads to miniaturization of its size. This antenna operates in 1-10 GHz range includes five frequency resonance for the most of convenient applications. Also, it has appropriate pattern and circular polarization which increases its applications. The antenna has been fabricated and there is a good agreement between measurement results and full wave simulation using HFSS software. Manuscript profile -
Open Access Article
4 - Size Reduction of Planer Dipole Antenna withUsing New Hybrid Koch Fractal
Ali Gashtasbithis paper presented a new hybrid Koch dipole fractal antenna that contributes to a 20% antenna size reduction. There is analyze the third iterative application of a new hybrid dipole fractal that leads to to10% extra shrinkage. The simulation result shows that th Morethis paper presented a new hybrid Koch dipole fractal antenna that contributes to a 20% antenna size reduction. There is analyze the third iterative application of a new hybrid dipole fractal that leads to to10% extra shrinkage. The simulation result shows that the proposed antenna is useful for GSM900 application. Manuscript profile