DESIGN AND OPTIMIZATION OF A LOGO-TYPE ANTENNA FOR MULTIBAND APPLICATIONS

This study respectively uses two optimizers, iterative Taguchi's method and particle swarm optimization, combined with the method of moments to optimize a logotype planar antenna for multiband applications. The proposed antenna consists of four metal letters, NCNU, which is the abbreviation of the authors' university name. This antenna can be used for university logo or advertisement applications. The antenna also serves as an example to compare the optimization performance of these two optimizers. Optimization results show that Taguchi's method achieves much better optimization performance than particle swarm optimization. This study also investigates the electromagnetic characteristics of the proposed antenna by parametric study using simulation. The presented optimization methods could be applied to designing similar logotype antennas. Planar antennas ofier the advantages of small size, light weight, and low cost. An antenna's performances such as, VSWR, gain, radiation pattern, compactness, are concerned by a designer. It would be great if a logo could be included in the antenna geometry with good antenna features. Few works related to logo-type antennas have been proposed. In (1), a single E-shaped radiating element was embedded into the company logo. Two logo patch antennas shown in (2) were designed by an experimental efiort. This study designs a planar multiband planar antenna with a unique shape using several metal strips to form the NCNU shape, which is the abbreviation of the authors' university. In the proposed antenna, the entire logo of the