Dual-frequency and dual-polarization antenna array and electronic device

An electronic device comprising a dual-frequency and dual-polarization antenna array to transmit and receive signals, wherein the dual-frequency and dual-polarization antenna array comprises:

• a first substrate;
• N*M dual-frequency and dual-polarization antennas, wherein N and M are positive integers, and each of the N*M dual-frequency and dual-polarization antennas comprising:
• a first polarization antenna comprising a first radiation portion and a second radiation portion, wherein the first radiation portion is disposed on a first surface of the first substrate, and the second radiation portion is disposed on a second surface of the first substrate;
• and
• a second polarization antenna comprising a third radiation portion and a fourth radiation portion, wherein the third radiation portion is disposed on the first surface of the first substrate, and the fourth radiation portion is disposed on the second surface of the first substrate;
• and
• a second substrate located on a side of the second surface of the first substrate, wherein a surface of the second substrate close to the first substrate is a copper-clad surface;
• wherein layout directions of the first polarization antenna and the second polarization antenna are orthogonal in the first substrate;
• and a distance between two adjacent dual-frequency and dual-polarization antennas in a horizontal direction is equal to a wavelength of an operating frequency band of each of the two adjacent dual-frequency and dual-polarization antennas, and the distance between the two adjacent dual-frequency and dual-polarization antennas in the horizontal direction is smaller than a distance between two adjacent dual-frequency and dual-polarization antennas in a vertical direction,
• each of the N*M dual-frequency and dual-polarization antennas further comprises two signal feeding lines, the two signal feeding lines are respectively coupled to the second radiation portion and the fourth radiation portion to feed current signals, the current signals feeding the second radiation portion and the fourth radiation portion comprise a phase angle difference;
• and
• the first radiation portion comprises a first square portion and a first rectangular portion extended from a corner of the first square portion, the second radiation portion comprises a second square portion, the third radiation portion comprises a third square portion and a convex portion, the convex portion is disposed on a side of the third radiation portion close to the fourth radiation portion, and the fourth radiation portion comprises a fourth square portion and a second rectangular portion extended from a corner of the fourth square portion.