Triband Operation Enhancement Based on Multimode Analytics of Modified Rhombic Ring Structure with Fractal Ring Parasitic

Abstract EN

This paper presents a triband operation enhancement based on multimode analytics of a monopole antenna designed by combining a rhombic ring radiator with a strip on a top layer and a fractal ring resonator placed at the bottom layer.

The proposed antenna can achieve triband operation to support the modern wireless communication systems.

The antenna size is approximately 36 × 52 mm2, which is quite compacted compared with the revised antenna.

The simulation and measurement results are in good agreement.

The antenna covers the operating bands at 22.22%, 9.8%, and 31.27% at the resonant frequencies of 1.8 GHz, 2.45 GHz, and 3.71 GHz, respectively, to support the application bands of LTE 1800, WLAN IEEE802.11b/g, WiMAX, and IMT Advanced Systems (5G).

The average gain of the antenna is about 2 dBi.

Also, the radiation patterns are omnidirectional for all operating frequencies.