Antenna system and communication terminal
The present disclosure provides an antenna system, including a circuit board and three antenna arrays. The circuit board includes a circuit chip and a first PCB, a first FPC, a second PCB, a second FPC, and a third PCB that are sequentially stacked and electrically connected to each other. The first FPC includes a first extension portion, the second FPC includes a second extension portion and a third extension portion on two adjacent sides, the first extension portion and the second extension portion are located on a same side of the circuit board, and every two of the first extension portion, the second extension portion, and the third extension portion are perpendicular to each other. The present invention further provides a communication terminal using the antenna system. The antenna system and the communication terminal of the present disclosure have a wide frequency band, high coverage efficiency, and a stable signal.
1. An antenna system, comprising
a circuit board and
at least three antenna arrays separately fixed on the circuit board; wherein
each antenna array comprises a plurality of antenna units disposed in an array;
the circuit board comprises a circuit chip and a first PCB, a first FPC, a second PCB, a second FPC, and a third PCB that are sequentially stacked and electrically connected to each other;
the circuit chip is fixed and electrically connected to the first PCB;
the first FPC comprises a first body portion disposed between the first PCB and the second PCB and a first extension portion that is reversely bent and extends from the first body portion and that is parallel to the first body portion;
the second FPC comprises a second body portion disposed between the second PCB and the third PCB and a second extension portion and a third extension portion that perpendicularly extend toward a direction of the third PCB respectively from two adjacent sides of the second body portion; the first extension portion and the second extension portion are located on a same side of the circuit board, and every two of the first extension portion, the second extension portion, and the third extension portion are perpendicular to each other; and
the three antenna arrays are respectively attached to the first extension portion, the second extension portion, and the third extension portion, and are arranged along respective length directions.
2. The antenna system according to claim 1 , wherein each antenna array comprises four antenna units arranged in a linear array.
3. The antenna system according to claim 2 , wherein the antenna unit is a millimeter wave antenna.
4. The antenna system according to claim 1 , wherein the three antenna arrays are respectively formed on the first extension portion, the second extension portion, and the third extension portion in a printed manner.
5. The antenna system according to claim 1 , wherein the circuit chip comprises an RFIC.
6. A communication terminal, comprising
a housing,
a display screen assembled on the housing and enclosing an accommodating space, and
a main board accommodated in the accommodating space;
wherein the communication terminal comprises the antenna system according to claim 1 , and the circuit board is electrically connected to the main board.
7. The communication terminal according to claim 6 , wherein the housing and the display screen are both made of 3D glass.
8. The communication terminal according to claim 6 , wherein the first extension portion, the second extension portion, and the third extension portion are respectively attached to inner sides of the housing and the display screen.
9. The communication terminal according to claim 8 , wherein the communication terminal comprises two antenna systems respectively disposed on the inner side of the housing and the inner side of the display screen, and the two antenna systems are located on two opposite ends on different sides of the communication terminal.