UWB patch antenna design and realization in the bandwidth 780 MHz to 4.22 GHz

TL;DR

This paper presents the design and realization of a UWB patch antenna covering 780 MHz to 4.22 GHz, suitable for various mobile and wireless networks, with high efficiency and omnidirectional radiation.

Contribution

The paper introduces a practical UWB antenna design on FR-4 substrate with validated simulation and measurement results demonstrating broad bandwidth and consistent radiation patterns.

Findings

Measured bandwidth from 980 MHz to 4.2 GHz

Efficiency of 94.14% within the operational bandwidth

Radiation pattern remains omnidirectional and consistent with simulations

Abstract

The proposed UWB antenna covers mobile communications (GSM, EDG, UMTS(3G), LTE(4G)) and wireless networks (WIFI, WiMAX), within a theoretical bandwidth defined from 780MHz to 4.22GHz. The UWB antenna is designed and realized on a FR-4 substrate with an electrical permittivity of 4.4. It presents a 98.75% average analytical efficiency and an omnidirectional radiation within the previous bandwidth. The impedance excitation port is fixed at 50 Ohm according with the SMA impedance used in the practical part. The measured results are in good agreement with those obtained using CST and ADS softwares. The measured bandwidth, defined from 980MHz to 4.2GHz, presents an efficiency of 94.14%. Furthermore, the practical radiation diagram and the excitation port impedance stay the same as that the simulation one.