An antenna array, comprising a first directional antenna and a second directional antenna, wherein the first directional antenna and the second directional antenna are in different directions; the first directional antenna comprises a first antenna element, a first reflector, a first feed line connected to the first antenna element, and a first switch for controlling the first feed line; the second directional antenna comprises a second antenna element, a second reflector, a second feed line connected to the second antenna element, and a second switch for controlling the second feed line; the first antenna element is a microstrip dipole antenna element, and a length of the first antenna element is approximately a half of an operating wavelength of the antenna array; the first reflector is a parasitic microstrip antenna element, a length of the first reflector is greater than the length of the first antenna element, a distance between a midpoint of the first reflector and the first antenna element is approximately a quarter of the operating wavelength, and two ends of the first reflector are bent toward the first antenna element; the second antenna element is a microstrip dipole antenna element, and a length of the second antenna element is approximately a half of the operating wavelength; the second reflector is a parasitic microstrip antenna element, a length of the second reflector is greater than the length of the second antenna element, a distance between a midpoint of the second reflector and the second antenna element is approximately a quarter of the operating wavelength, and two ends of the second reflector are bent toward the second antenna element; and a distance between the midpoint of the first reflector and the midpoint of the second reflector is smaller than a distance between a midpoint of the first antenna element and a midpoint of the second antenna element; wherein the antenna array further comprises a first printed circuit board and a second printed circuit board; the first antenna element, the first feed line, the first switch, the second antenna element, the second feed line, and the second switch are disposed on the first printed circuit board; the first reflector and the second reflector are disposed on the second printed circuit board; and the first printed circuit board is parallel to the second printed circuit board and is fastened to the second printed circuit board. the first directional antenna and the second directional antenna are in different directions; the first directional antenna comprises a first antenna element, a first reflector, a first feed line connected to the first antenna element, and a first switch for controlling the first feed line; the second directional antenna comprises a second antenna element, a second reflector, a second feed line connected to the second antenna element, and a second switch for controlling the second feed line; the first antenna element is a microstrip dipole antenna element, and a length of the first antenna element is approximately a half of an operating wavelength of the antenna array; the first reflector is a parasitic microstrip antenna element, a length of the first reflector is greater than the length of the first antenna element, a distance between a midpoint of the first reflector and the first antenna element is approximately a quarter of the operating wavelength, and two ends of the first reflector are bent toward the first antenna element; the second antenna element is a microstrip dipole antenna element, and a length of the second antenna element is approximately a half of the operating wavelength; the second reflector is a parasitic microstrip antenna element, a length of the second reflector is greater than the length of the second antenna element, a distance between a midpoint of the second reflector and the second antenna element is approximately a quarter of the operating wavelength, and two ends of the second reflector are bent toward the second antenna element; and a distance between the midpoint of the first reflector and the midpoint of the second reflector is smaller than a distance between a midpoint of the first antenna element and a midpoint of the second antenna element; wherein the antenna array further comprises a first printed circuit board and a second printed circuit board; the first antenna element, the first feed line, the first switch, the second antenna element, the second feed line, and the second switch are disposed on the first printed circuit board; the first reflector and the second reflector are disposed on the second printed circuit board; and the first printed circuit board is parallel to the second printed circuit board and is fastened to the second printed circuit board.