Abstract: A housing for an electronic device includes a main body configured to receive an electronic device and a wireless transmitter configured to send and receive wireless signals. An opening or recess is located on the outside surface of the main body, the opening or recess being covered with a cover made of radiation-transparent material. The wireless transmitter is received in the recess and is electrically connected with the electronic device to function.

Abstract: A circuit board includes a substrate defining a plurality of ground attaching holes and a plurality of first through-holes. The substrate includes a first surface and a side edge. Wherein, a plurality of parallel and spaced first conductive paths is formed on the first surface around each ground attaching hole. A first arcuate conductive portion is formed at each end of each first conductive path. An angle between each first conductive path and the side edge is 45° or 135°. The first through-holes respectively extend through the first arcuate conductive portions and electrically couple with the first conductive paths.

Abstract: A circuit board includes a substrate defining a plurality of ground attaching holes and a plurality of first through-holes. The substrate includes a first surface and a side edge. Wherein, a plurality of parallel and spaced first conductive paths is formed on the first surface around each ground attaching hole. A first arcuate conductive portion is formed at each end of each first conductive path. An angle between each first conductive path and the side edge is 45° or 135°. The first through-holes respectively extend through the first arcuate conductive portions and electrically couple with the first conductive paths.

Abstract: An electronic device includes a shell and at least two antennas. Each corner of the shell is formed between two adjacent side walls. The antennas are set in opposing corners, and a shape of each antenna adapts to a shape of the corner. An angle of radiation of the antenna in front or behind the shell can be enlarged to increase the effectiveness of receiving or transmitting signals of the antenna.