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In this paper the authors have presented a planar metamaterial antenna using offset fed diamond shaped split rings (DSSR). The structure behaves as normal patch antenna when the split rings are excited at normal cuts on Y-axis whereas the same structure exhibits metamaterial characteristics when fed at offset cut at an angle ??=45??. In offset cut the excess inductance and capacitance due to microstrip...
Miniaturized microstrip antennas are of great interest in the recent time especially in wireless communication systems and biomedical applications. To enhance efficiency, avoid co-channel, adjacent channel interference and associated complications accurate determination of resonant frequency is an essential requirement. A method to calculate accurately the resonant frequency is of great importance...
In this paper, the authors propose a new evolutionary optimization technique i.e. modified biogeography-based optimization (MBBO). This technique is an improved version of BBO with each solution is directly encoded by floating point. BBO is a new bio-inspired and population based optimization algorithm for global optimization. The exploitation ability of BBO method is good but it lacks in exploration...
Soft computing applications to antenna design are becoming the potential solution provider as reflected from the number of papers published in various journals. Resonant frequency of rectangular microstrip antenna having various substrate thicknesses are generally calculated using the standard expressions presented in literatures. In this paper, hybridizing bacterial foraging optimization technique...
In bio-medical applications and wireless communication systems, the microstrip antennas are extensively used due to their low-profile feature and ease of fabrication. With recent advances in electromagnetic computer-aided design (CAD), the design of microstrip antenna has been benefited from the utilization of accurate numerical methods. Recently the particle swarm optimization (PSO) was introduced...
Particle swarm optimization is an evolutionary optimization technique conceived in recent time has many advantages over genetic algorithm. But it is yet to be applied in the parameters calculations of microstrip patch antenna. In this paper, a novel technique is developed to apply particle swarm optimization technique in conjunction with the developed standard equation to accurately calculate the...
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