Wireless communicating apparatus

The invention discloses a wireless communicating apparatus including an antenna, a transceiver, a matching circuit and a controlling circuit. The matching circuit is electrically connected between the antenna and the transceiver. The controlling circuit is electrically connected to the matching circuit and the transceiver respectively. The transceiver is used for transmitting/receiving communicative signals of at least one radio bands. The matching circuit includes a tunable capacitor module. The tunable capacitor module includes a varactor, a fixed capacitor and an electronic switch. The fixed capacitor series with the electronic switch, and they together are paralleled with the varactor. The controlling circuit generates controlling signals based on the radio bands for controlling the varactor and the electronic switch, so as to adjust a matching capacitance value of the tunable capacitor module.