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PORTABLE PILOT SIGNAL GENERATOR ADAPTED TO 2ND GENERATION AND 3RD GENERATION MOBILE COMMUNICATION SIMULTANEOSLY
PORTABLE PILOT SIGNAL GENERATOR ADAPTED TO 2ND GENERATION AND 3RD GENERATION MOBILE COMMUNICATION SIMULTANEOSLY
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机译:同时适用于第二代和第三代移动通信的便携式飞行员信号发生器
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摘要
A portable pilot signal generator adapted simultaneously to the 2nd generation and 3rd generation mobile communication is provided to realize a transmitter which exclusively generates a pilot signal, thereby miniaturizing a device and improving mobility. The first digital to analog converter(102a) converts a digital pilot signal generated in a 2G pilot signal generator(101a) into an analog signal. The first mixer(104a) mixes the converted pilot signal with the first center frequency signal generated from the first partial signal generator(105a). The second digital analog converter(102b) converts a digital pilot signal generated in 3G pilot signal generator(101b) into an analog signal. The second mixer(104b) mixes the converted pilot signal with the second center frequency signal generated from the second partial signal generator(105b). A multiplexer(110) selects/outputs one pilot signal among the pilot signals generated in the first mixer and the second mixer.
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