UWB-MIMO Antenna with Band-Notched Characteristic

Abstract

Higher data rates and improved quality of service are the primary concerns of future wireless communication systems like 4G and 5G. Since the Federal Communications Commission (FCC) allocated the unlicensed frequency spectrum from 3.1–10.6 GHz for commercial applications in 2002, ultra-wideband (UWB) technology has attained considerable attention because of its inherent features like high data rate communications, extremely less power consumption, and low cost. However, multipath fading and frequency interference with other communication systems are the important problems that should be well solved for UWB systems. In an indoor communication application, like other wireless communication systems, the UWB system performance is also restricted by multipath fading due to rich scattering environments which cause inter-symbol interference. In present times, digital communication using multiple input multiple output (MIMO) technology has emerged as a breakthrough for a wireless system. The MIMO system employs multiple antennas at the transmitter and receiver. It makes use of the rich multipath environment to mitigate the multipath fading effect. And it improves the range of communication and system capacity (data rate) without the need for additional bandwidth or transmitted signal power. Hence, the UWB system with MIMO technology is a viable solution to reduce the multipath fading effect and to improve the quality of service, the range of communication and system capacity.