Full-Ψ and Half-Ψ Patch Antennas for Dual Band WLAN Applications

Full-Ψ and Half-Ψ Patch AntennasDual frequency behavior of slotted patches has been exploited since a lot of time by the researchers for making antennas for various useful wireless communication bands. Many shapes of slotted patches have been experimented with and improved over time. This book shows work done on the new half-Ψ patch antenna. It's a novel design developed from the full- Ψ patch reported in 2007. It's half in size and hence compact though it offers same dual frequency behavior. The dual frequency behavior is presented for both full and half patches. The real time simulations and lab experiment results are given to explain the same. Also, a systematic procedure to optimize such a patch for a specific dual band WLAN application is developed. Soft computing algorithms have proved very helpful for antenna optmization. Although they are not necessary, but they provide lot of advantages which manual optmization does not have. They have been discussed briefly and Particle Swarm Optmization (PSO) Algorithm has been used to develop the example antenna.