Patent ID: 8013681

Claim:
A communications device, comprising: a frequency divider circuit having a plurality of frequency division ratios; at least one phase-lock loop (PLL) circuit coupled to at least a signal input of said frequency divider circuit, said PLL circuit comprising a local oscillator (LO) circuit, said LO circuit comprising a plurality of voltage controlled oscillators (VCOs) having different frequency tuning ranges, a plurality of loop filter circuits each coupled to a respective one of said plurality of VCOs, a plurality of comparators each coupled to a respective one of said plurality of loop filter circuits, and a plurality of feedback circuits each coupled to a respective one of said plurality of comparators, and to an input or output of said frequency divider circuit; and at least one control input coupled to at least said frequency divider circuit and said PLL circuit for selecting one of said plurality of VCOs and one of said plurality of frequency division ratios.