Dual-Band, Slant-Polarized MIMO Antenna Set for Vehicular Communication

TL;DR

This paper presents the design, simulation, and measurement of a dual-band slant-polarized MIMO antenna set for vehicular communication, achieving high gain, wide bandwidth, and omni-directional coverage suitable for automotive environments.

Contribution

It introduces a novel dual-band slant-polarized MIMO antenna configuration with optimized design and validation for automotive applications, including real-world field testing.

Findings

Measured gains of 7 dBi (LB) and 8 dBi (HB)

Antenna pattern covers 360° around the vehicle

Simulation and measurement results show high accuracy

Abstract

Slant-polarized Multi Input Multi Output (MIMO) antennas are able to improve the performance of mobile communication systems in terms of channel capacity. Especially, the implementation of MIMO configurations for automotive applications requires to consider high gain, wideband, low-profile and affordable antennas in the communication link. In this work design, simulation and measurement of a new dual-band slant-polarized MIMO antenna with HPBW (Half Power Beam Width) of around 900 are presented. Then, four replicas of the proposed antenna set are placed at four different poles (North, South, West and East) to cover 3600 around the vehicle as an omni-directional pattern. In the real world scenario, the proper antenna set is selected to communicate with the intended user. Each slant MIMO antenna set consists of two inclined (450) low band (LB: 700 to 900 MHz) and two inclined high band (HB: 1.7 to 2.7 GHz) log-periodic antennas. The measured gain of LB and HB antennas are 7 dBi and 8 dBi, respectively. Great agreement between simulation and measurement results confirms the accuracy of the design and simulation procedures of antenna system using optimization algorithm (Genetic method). The proposed antenna is also measured in the field for industrial applications.