Patent ID: 8174328

Claim:
A dual-band wideband local oscillation signal generator, comprising: an oscillation unit configured to generate a positive in-phase (IP) signal, a negative in-phase (IN) signal, a negative quadrature-phase (QN) signal, and a positive quadrature-phase (QP) signal; a division unit configured to divide frequencies of the IP signal and the IN signal and generate an RF signal; a poly phase filter configured to receive the IP signal and the IN signals inputted to the division unit, and generate an LO IP signal, an LO IN signal, an LO QP signal, and an LO QN signal; a switch unit configured to receive the generated LO signals and select a high band frequency signal or a low band frequency signal; and a single side band (SSB) mixer configured to generate a local oscillation signal by using sum and difference signals of the divided signal and the signal selected by the switch unit.