Antenna system and mobile terminal

A mobile terminal, the mobile terminal is provided with a screen, a back shell arranged opposite to the screen, a circuit board sandwiched between the screen and the back shell and an antenna system, the antenna system including:

• a first feeding point;
• a first millimeter-wave array antenna electrically connected to the first feeding point;
• a second feeding point;
• a second millimeter-wave array antenna electrically connected to the second feeding point;
• a third feeding point;
• a third millimeter-wave array antenna electrically connected to the third feeding point;
• a fourth feeding point;
• and
• a fourth millimeter-wave array antenna electrically connected to the fourth feeding point, which are all disposed on the circuit board,
• when the mobile terminal is placed in a three-dimensional coordinate system that takes a center of the mobile terminal as an origin;
• an X axis of the three-dimensional coordinate system extends in a major-axis direction of the mobile terminal;
• a Y axis of the three-dimensional coordinate system extends in a minor-axis direction of the mobile terminal;
• a Z axis of the three-dimensional coordinate system extends in a thickness direction of the mobile terminal;
• a positive axis of the X axis points to the top of the mobile terminal;
• and a positive axis of the Z axis points to the screen,
• the first millimeter-wave array antenna implements beam scanning in a space of X>0;
• the second millimeter-wave array antenna implements beam scanning in a space of X<0;
• the third millimeter-wave array antenna implements beam scanning in a space of Y>0;
• the fourth millimeter-wave array antenna implements beam scanning in a space of Y<0;
• wherein
• the first millimeter-wave array antenna comprises a first feeding network connected to the first feeding point and a first antenna array face fed by the first feeding network;
• the second millimeter-wave array antenna comprises a second feeding network connected to the second feeding point and a second antenna array face fed by the second feeding network;
• the third millimeter-wave array antenna comprises a third feeding network connected to the third feeding point and a third antenna array face fed by the third feeding network;
• and
• the fourth millimeter-wave array antenna comprises a fourth feeding network connected to the fourth feeding point and a fourth antenna array face fed by the fourth feeding network.