Circularly Polarized Microstrip Patch Antenna with Optimized Patch Parameters Using Particle Swarm Optimization

Adamu Jabire Halilu, Hong-Xing Zheng, Anas Abdu

Abstract


A compact, circularly polarized, dual band patch antenna is presented. The structure involves three design parameters with their associated constraints, particle swarm optimization algorithm is developed to determine the patch parameter values. The related constraints are the radius and height of the circular patch. The axial ratio and s-parameter for a 3.9GHz and 7.8GHz is realized. Good agreement is achieved between the measurement and simulation, which indicates that a -10dB impedance bandwidth of 4.2% from 3.8166GHz to 3.9390GHz and 7% (7.6621 – 7.9390GHz) at two frequency bands, respectively, are covered in the design antenna. The antenna is designed and fabricated on FR4 substrate with dielectric constant of 4.4 and dimension of (40mm x 40mm x 1.4mm.) at a frequency of 3.95GHz.


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References


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