Communication device and antenna thereof

摘要

An antenna of a communication device includes a metal frame (12), a metal back cover (18) and a printed circuit board (20). The printed circuit board (20) includes a first circuit block (26) and a second circuit block (28) electrically connected to the first circuit block (26) . A first conductor (30) is connected between a first part (34) of the metal frame (12) and a signal terminal (38) of the first circuit block (26). A second conductor (32) is connected between a second part (36) of the metal frame (12) and a ground terminal (40) of the first circuit block (26). A third conductor (42) is connected to a third part (52) of the metal frame (12). A fourth conductor (44) is connected to a ground terminal (50) of the second circuit block (28), and at least one coupling gap (56) is defined between the third conductor (42) and the fourth conductor (44). A signal terminal (48) of the second circuit block (28) is electrically connected to a fourth part (54) of the metal frame (12).