A Highly Efficient Car2Car-multiband rooftop automotive antenna

A new highly efficient shark-fin rooftop Car-to-Car (C2C)-multiband antenna for automotive applications, integrated into an LTE structure is presented. The single-feed antenna operates in a wide frequency band covering the LTE-, WiFi/WLAN-, and C2C communication services without the need of a matching network, in a compact and robust structure made of metal, suitable for most of the shark-fin shaped covers available on the market. The metal panel design of the antenna yields high efficiency, an easy fabrication process and a low-cost production. The radiation pattern features a specific directional behavior in the C2C frequency band, enabling an omnidirectional coverage when placing the antenna on the typical roof mount position.