Patent ID: 8340608
Filing Date: 2012-12-25
Classification: H04B,H04W

Abstract:
1. A Global System for Mobile Communication GSM/Code Division Multiple Access CDMA dual-mode mobile phone, comprising: a CDMA RF circuit, a GSM RF circuit, a baseband circuit comprising a CDMA baseband chip and a GSM baseband chip, with the CDMA RF circuit comprising a CDMA RF receiving circuit, a CDMA RF transmitting circuit and a duplexer, the CDMA RF transmitting circuit being connected respectively with the CDMA baseband chip and the duplexer, the CDMA RF receiving circuit comprising a CDMA receiver, a receiving filter and a Low Noise Amplifier LNA which are sequentially connected, the CDMA receiver being connected with the CDMA baseband chip, the LNA being connected with the duplexer; the GSM RF circuit being connected with the GSM baseband chip; the mobile phone further comprising: a dual-port antenna, connected respectively with the duplexer and the GSM RF circuit, and configured to transmit/receive signals of the GSM and the CDMA; and RF switch(s), provided in the CDMA RF receiving circuit, wherein the RF switch(s) is controlled by the GSM baseband chip and configured to cut off, when the GSM RF and the CDMA RF work at near frequency during a transmitting timeslot of the GSM, CDMA signal(s) accessed by the dual-port antenna.