| 摘要 |
A multi-band receiver for converting RF signals in different bands into IF signals in digital multimedia broadcasting (DMB) or digital audio broadcasting (DAB) is provided. The multi-band receiver includes an amplification unit amplifying the at least three RF signals, a voltage controlled oscillator (VCO) generating at least three basic oscillator signals, and an IF signal converting unit converting the at least three RF signals output from the amplification unit into IF signals by using the at least three basic oscillator signals. Each of the at least three basic oscillator signals is constructed with two differential signals having a phase difference of 90 degrees. Accordingly, it is possible to easily design a VCO and reduce the area of the VCO by processing application bands band-II, band-III, and L-band of a DMB system by using one or two VCOs in the multi-band receiver.
|
