Vehicle-Mounted Antenna with Full-Duplex and Beamforming Capabilities

In-band full-duplex (IBFD) systems can be utilized to facilitate spectrum-sharing in vehicle-to-everything (V2X) applications. Vehicle-mounted antennas should ideally provide omnidirectional radiation patterns to cover all angles around the moving platform, which has been demonstrated with the use of arrays and circular mode phasing schemes. This paper introduces and presents the simulation of a novel antenna design that integrates that phasing concept with the ability to perform adaptive beamforming on receive. This added benefit provides an IBFD system with the capability to estimate a signal’s direction of arrival, which can improve communication-link performance for V2X and other applications.