MOBILE TERMINAL WITH SHARED BUILT-IN ANTENNA AND METHOD FOR SHARING BUILT-IN ANTENNA

摘要

The invention relates to a mobile terminal with a shared built-in antenna and a method for sharing the built-in antenna. The mobile terminal with the shared built-in antenna comprises a built-in GSM antenna and a built-in FM antenna, wherein the built-in GSM antenna and the built-in FM antenna are the same antenna. In the method for sharing the built-in antenna of the mobile terminal, an FM and GSM signal separation circuit is arranged at a contact piece end of a GSM antenna feed pin, and a frequency selection circuit is arranged at a contact piece end of a GSM antenna grounding pin if necessary, so that the GSM antenna can be used as the built-in FM antenna. Aiming at the defects of large size and high cost of the built-in FM antenna arranged independently at present, other built-in antennas such as the GSM antenna on the mobile terminal are used as the built-in FM antenna, so that the multifunctional sharing of one antenna is realized. After the technical scheme of the invention is adopted, the internal space of the mobile terminal and the cost for additionally arranging another antenna are not increased while fully ensuring that the antenna performance is stable.