| 摘要 |
PURPOSE: An apparatus for wirelessly connecting a mobile phone with a data terminal is provided to wirelessly connect the mobile phone with the data terminal by a radio frequency(RF) signal, so as to remove crosstalks and noises between the mobile phone and the data terminal by a phase locked loop(PLL) as a frequency oscillator. CONSTITUTION: A wireless connector transmits a data signal. A low noise amplifier(LNA)(312) receives the data signal transmitted via a duplexer(311), and firstly amplifies the signal. The amplified signal is converted into an intermediate frequency(IF) signal. An IF band filter(315) filters a signal transmitted from an IF mixer(314) to remove signals except IF bands, and passes an IF signal only. Amplifiers(316,325) amplify the IF signal and transmit the signal to a baseband mixer(318) and a central processing unit(CPU)(326). The baseband mixer mixes a second reference frequency with the IF signal to convert the IF signal into a baseband signal, and transmits the baseband signal to a demodulator(319). The demodulator demodulates the baseband signal to an original signal, and transmits the signal to a mobile phone or a data terminal. If the mobile phone or the data terminal transmits the baseband signal to a modulator(320), the modulator modulates the signal into a signal type appropriate for being loaded into a carrier, and transmits the signal to a high frequency mixer(322). The high frequency mixer mixes a third reference frequency with the baseband signal, and converts the baseband signal into a high frequency signal. A band pass filter(323) passes high frequency signals only, and removes other frequency bands.
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