| 摘要 |
PROBLEM TO BE SOLVED: To provide an RF-receiving apparatus and method using a baseband signal in which a DC offset is removed. SOLUTION: In the RF-receiving apparatus, a noise phase removing unit generates a phase controlled local signal (PLOQ) in which a phase of a Q signal of a local high-frequency signal (LOQ) is controlled, by synthesizing a received RF signal (RXIN) and the Q signal of the local high-frequency signal (LOQ). A down converter then generates a signal in which a DC offset from noise introduced into the received RF signal (RXIN) is removed, when synthesizing the received RF signal (RXIN) and the phase controlled local signal (PLOQ) for frequency-down conversion. COPYRIGHT: (C)2007,JPO&INPIT
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