Back to results
US 2022/0300028 A1Published application
Variable Phase and Frequency Pulse-Width Modulation Technique
AssigneeUltrahaptics IP Ltd
InventorsBenjamin John Oliver Long, Rafel Jibry
Life of this patent
Estimating the term…
Abstract
Phased array systems rely on the production of an exact carrier frequency to function. Reconstructing digital signals by specified amplitude and phase is accomplished explicitly by inducing frequency shifts away from a base frequency implied by phase changes. Shifting the carrier frequency of a digitally controlled phased array while preserving the timing of the individual phase pulses enables more efficient driving of the phased array system when the phase of the drive signals change dynamically in time.
Claims7
1-12. (canceled)
A system comprising:
- a digital electrical signal having a state, wherein the state is calculated by comparing a difference between a current position in a base frequency cycle and an instantaneous phase angle to a proportion of cycle duty that would be present at the base frequency cycle.
Dependencies are inferred from the claim text.