Optimization of leaky-wave antennas based on non-uniform HMSIW

• Published in: 2015 IEEE MTT-S International Conference on Numerical Electromagnetic and Multiphysics Modeling and Optimization (NEMO) pp. 1 - 4
• Main Authors: Nguyen-Trong, Nghia, Kaufmann, Thomas, Hall, Leonard, Fumeaux, Christophe
• Format: Conference Proceeding
• Language: English
• Published: IEEE 01-08-2015
• Subjects: Analytical models; Antenna radiation patterns; Half-Mode Substrate-Integrated Waveguide (HMSIW); Leaky wave antennas; Optimization; pattern synthesis; Substrates; Wideband
• DOI: 10.1109/NEMO.2015.7415002

In this paper, the optimization of leaky-wave antennas (LWAs) based on non-uniform half-mode substrate-integrated waveguides (HMSIWs) is presented. The optimization is based on a semi-analytical solution of a tapered HMSIW, which has been recently proposed by the authors in a previously published paper. This analysis is based on a transmission line model of the HMSIW, where the reflections along the LWA are considered. Compared to the traditional approach, the analysis demonstrates a higher accuracy on the pattern calculation. Two different optimizations with different objectives are demonstrated: a wideband omni-directional LWA and a LWA with minimized sidelobe level. The optimized results obtained with particle swarm optimization and genetic algorithm exemplify the versatility of the method for different target specifications.