Super wideband high gain hybrid microstrip patch antenna

Abstract

A super wideband hybrid microstrip patch antenna with high gain is presented in this research work. The electrical dimension of the presented antenna is 0.273λ × 0.213λ × 0.01λ, where λ is the wavelength of the lowest operating frequency (2 GHz). The patch consists of one rectangle overlapping with two ellipses loaded by two notches and it looks like a two dimensional “MEDICAL PILL”. Simulation result of the designed antenna exhibits −10 dB impedance bandwidth from 2 GHz to beyond 95 GHz with a fractional bandwidth of 192%. The measured results exhibit −10 dB impedance bandwidth of more than 38 GHz (2 GHz to above 40 GHz) with a fractional bandwidth of more than 180%, BDR of larger than 3095 and bandwidth ratio of more than 10:1. Also a measured peak gain of 7.4 dBi is achieved at 26.5 GHz. An equivalent RLC circuit of the proposed antenna is developed using ADS software and the result is compared with simulated and measured results. This proposed antenna can be used for S band (2 GHz-4 GHz), UWB band (3.1 GHz–10.6 GHz), X band (8 GHz–12 GHz), Ku band (12 GHz–18 GHz), K band (18 GHz–27 GHz) and 5G technology band (24.25 GHz–29.5 GHz) applications.