Abstract: A printed circuit antenna for applications in electronic devices with wireless transmission abilities. The printed circuit antenna contains a substrate and a connector. Both surfaces of the substrate have a feed line, a feed section and a radiation section for wireless transmissions. The connector connects the substrate to an electronic device, with one end having a surface connecting to the substrate and the other end connecting to the electronic device. The connecting plane has an annular concave area in its central region, separating the connecting plane into two connecting regions. This can increase the connection area between the connector and the substrate to avoid breakings and/or departure.