Optimisation of circular monopole UWB antenna using the concept of golden ratio

Abstract

The paper presents compact circular monopole planar antenna optimization using the concept of golden ratio found in nature for UWB applications. The initial circular monopole antenna of size 52 × 66 × 1.6 mm3 is presented and then optimized it to another circular monopole antenna of size 30 × 37 × 1.6 mm3. The antenna is approximately half the size of initial antenna with comparable performance to the initial antenna. The final prototype achieves the impedance bandwidth in UWB range (2.4GHz–14.46GHz except at 7.2–8.3GHz) and some portion of Ku band (16.1–19.873GHz) with positive gain in the specified range. The can be used for the UWB and Ku band communications in the real world.