| 摘要 |
PURPOSE: A digital radio mondiale plus (DRM+) broadcast receiving device is provided to obtain a signal for DRM+ standards according to the adjustment of a sampling rate and a bandwidth by converting an output signal of an FM tuner into a digital signal. CONSTITUTION: A digital mixer (110) outputs first data of a base band by performing frequency-downward conversion to intermediate frequency (IF) data with a first sampling frequency. A poly phase filter (130) filters and samples the first data as much as a second sampling frequency in preparation for the first sampling frequency in order to output second data having a DRM+ standard bandwidth. A random sampling frequency converter (140) samples the second data as much as decimal multiple by considering an estimated sampling frequency offset in order to output third data corresponding to a third sampling frequency. [Reference numerals] (110) Digital mixer; (120) Phase NCO; (130) 1/n multiple phase filter; (140) Random sampling frequency converter; (150) Timing NCO; (AA) Amplification gain; (BB) IF signal; (CC) (zero IF) BW:100kHz first data; (DD) BW:100kHz second data; (EE) Third data (BB signal) BW:100kHz; (FF) Sampling frequency offset; (GG) Carrier frequency offset |
