Size reduction of volcano monopole antenna for personal communication applications

Abstract

We present a computer analysis of three different size reduction techniques on a volcano smoke planar antenna. A successfully structure size reduction was obtained using high permittivity substrates, partial cuts insertion, and slots insertion. We compare sizes of original antenna and the one modified, using reflection coefficient S11, gain and radiation patterns as analysis parameters. The original bandwidth of 5.14 GHz is achieved with gains up to 8 dB and almost omnidirectional radiation patterns. The final structure has dimensions of 45 × 100 × 1.52 mm, representing a 62% size reduction of original design.