Method and system are disclosed for modulating a radio frequency carrier signal. The radio frequency carrier signal is modulated using a VCO running at a center frequency of 0 Hz. A baseband signal is used to adjust the overall frequency of the VCO. The output of the VCO is a complex baseband signal having in-phase and quadrature components. The in-phase and quadrature components of the baseband signal are used to modulate the in-phase and quadrature components of the radio frequency carrier signal, respectively.
申请公布号
WO02084908(A3)
申请公布日期
2002.12.12
申请号
WO2002SE00741
申请日期
2002.04.12
申请人
TELEFONAKTIEBOLAGET LM ERICSSON (PUBL);KUENEN, JEROEN;DEKKER, MARCEL