Patent ID: 6278301
Filing Date: 2001-08-21
Classification: H03F,H03K

Abstract:
A waveform generator comprising:a reference source providing a base frequency signal;a signal divider having an input terminal coupled to said reference source and an output terminal coupled to a plurality of selectively engaged switches, said switches providing incremental portions of said base frequency signal;a summing block having first and second input terminals coupled to said reference source and said switches, respectively, and an output terminal providing a summed portion of said incremental portions and said reference source;a load capacitor; anda charge/discharge circuit having a first input terminal coupled to said summed portion, a second input terminal coupled to a feedback loop and an output terminal coupled to said load capacitor, said charge/discharge circuit configured to control a charge/discharge rate of said load capacitor as a function of said base frequency signal and said incremental portions.