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US 7,002,322 B1Granted
Modulated power supply
AssigneeNortel Networks Limited
InventorsDorian Davies, Graham Dolman
Life of this patent
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AssigneeNortel Networks Limited
InventorsDorian Davies, Graham Dolman
Estimating the term…
A modulated power supply comprises first and second coding units. The second coding unit is responsive to a feed-forward error signal representing the error between the coded output of the first coding unit and an input modulating signal. The second coding unit codes for the more limited range of the error signal, thereby improving resolution. The first coding unit can comprise M coding units arranged in parallel with one another. The M coding units are operated in a manner which increases the apparent number of quantisation levels. This is achieved by feeding a modified version of the input modulating signal to each of the M coding units or by offsetting by quantisation grids of the M coding units. The improvements are particularly useful for improving performance where the input modulating signal has a wide bandwidth.
A control apparatus for a modulated power supply comprising:
A method of generating a power supply signal using a modulated power supply comprising:
A computer program product for implementing a method of controlling operation of a modulated power supply, the computer program product comprising instructions which are arranged to cause a control apparatus of the supply to:
Dependencies are inferred from the claim text.