Antenna system mounted on vehicle

A vehicle having an antenna system, the vehicle comprising:

• a telematics module disposed on a bottom of a roof thereof, and configured to perform communication with at least one of an adjacent vehicle, a Road Side Unit (RSU), and a base station through a processor;
• and
• an antenna structure configured such that at least a portion thereof is exposed to a top of the roof,
• wherein the telematics module comprises:
• a printed circuit board (PCB) on which electronic components are disposed;
• at least one radiator electrically connected to the PCB, formed of a metal pattern having predetermined length and width, and configured to transmit and receive signals;
• a bottom cover disposed on a bottom of the PCB and formed of a metal plate having a slot region in an area adjacent to an area where the at least one radiator is connected to the PCB;
• a top cover fastened to the bottom cover and configured to accommodate the PCB and the at least one radiator therein;
• an antenna corresponding to at least one of the radiator and the metal plate having the slot region may operate in a broad band;
• a TCU substrate operably coupled to one side of an antenna substrate corresponding to the PCB;
• and
• a backup antenna (BUA) disposed on one side surface of the TCU substrate,
• wherein the slot region is formed in an area of the bottom cover corresponding to an area where the backup antenna is disposed,
• wherein the at least one radiator includes first to fourth radiators disposed on different areas of the antenna substrate corresponding to the PCB,
• wherein the slot region includes first to fourth slot regions disposed adjacent to first to fourth feed patterns of the first to fourth radiators,
• among the first slot region to the fourth slot region, a first type slot region formed in the area corresponding to the area where the backup antenna is disposed is located in an area toward the TCU,
• a second type slot region other than the first type slot region is located in an area toward the antenna substrate, and
• the first type of slot region is formed in the bottom cover more inward than the second type slot region.