Stacked Synthesizer for Wide Local Oscillator Generation Using a Dynamic Divider

摘要

A stacked synthesizer for wide local oscillator (LO) generation using a dynamic divider. The phase locked loop can include a plurality of voltage controlled oscillators (VCOs), and a selector that can be configured to select an output of one of the plurality of VCOs. The selected output of one of the plurality of VCOs can be provided to an on-chip dynamic divider and to an off-chip dynamic divider for LO sharing. The dynamic dividers can be configured to generate synthesizer outputs based on a multiplication of the selected output of one of the plurality of VCOs by a factor (1+1/M), where M is a variable number.

主权项

1. A synthesizer integrated circuit, comprising:
a phase locked loop, the phase locked loop including:
a plurality of voltage controlled oscillators; anda selector that is configured to select an output of one of the plurality of voltage controlled oscillators, the selector further configured to provide the selected output onto an output line; and a dynamic divider coupled to the output line, the dynamic divider configured to receive the selected output of one of the plurality of voltage controlled oscillators on the output line and generate a synthesizer output based on a multiplication of the selected output of one of the plurality of voltage controlled oscillators by a factor (1+1/M), where M is a variable number.