Third order sigma-delta modulator
AssigneeIndustrial Technology Research Institute
InventorsLong-Xi Chang, Chia-Chun Hung
Life of this patent
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Abstract
A third order sigma-delta modulator comprises a first summing unit for receiving an input signal, a first integrator network connected to an output of the first summing unit, a second integrator network for receiving an output of the first integrator network, a second summing unit connected to an output of the second integrator network, a third integrator network connected to an output of the second summing unit, and a feed-forward path from the output of the first integrator network to an input of the second summing unit.
Claims44
A third order sigma-delta modulator, comprising:
- a first summing unit for receiving an input signal;
- a first integrator network connected to an output of the first summing unit;
- a second integrator network for receiving an output of the first integrator network;
- a second summing unit connected to an output of the second integrator network;
- a third integrator network connected to an output of the second summing unit;
- and
- a feed-forward path from the output of the first integrator network to an input of the second summing unit.
A third order sigma-delta modulator, comprising:
- a first summing unit for receiving an input signal;
- a first integrator network connected to an output of the first summing unit;
- a second integrator network for receiving an output of the first integrator network;
- a second summing unit connected to an output of the second integrator network;
- a third integrator network connected to an output of the second summing unit;
- a third summing unit connected to an output of the third integrator network;
- and
- a feed-forward path from the output of the second integrator network to an input of the third summing unit.
A third order sigma-delta modulator, comprising:
- a first summing unit for receiving an input signal;
- a first integrator network connected to an output of the first summing unit;
- a second summing unit connected to an output of the first integrator network;
- a second integrator network connected to an output of the second summing unit;
- a third integrator network for receiving an output of the second integrator network;
- a third summing unit connected to an output of the third integrator network;
- and
- a feed-forward path from the output of the first integrator network to an input of the third summing unit.
A third order sigma-delta modulator, comprising:
- a first summing unit for receiving an input signal;
- a first integrator network connected to an output of the first summing unit;
- a second summing unit connected to an output of the first integrator network;
- a second integrator network connected to an output of the second summing unit;
- a third summing unit connected to an output of the second integrator network;
- a third integrator network connected to an output of the third summing unit;
- and
- a feed-forward path from the output of the first summing unit to an input of the third summing unit.
A method for modulating an input signal to produce an output digital signal, comprising:
- providing a first summing unit for receiving the input signal;
- connecting a first integrator network to an output of the first summing unit;
- providing a second integrator network for receiving an output of the first integrator network;
- connecting a second summing unit to an output of the second integrator network;
- connecting a third integrator network to an output of the second summing unit;
- and
- feeding forward a modulated signal at the output of the first integrator network to an input of the second summing unit.
A method for modulating an input signal to produce an output digital signal, comprising:
- providing a first summing unit for receiving the input signal;
- connecting a first integrator network to an output of the first summing unit;
- providing a second integrator network for receiving an output of the first integrator network;
- connecting a second summing unit to an output of the second integrator network;
- connecting a third integrator network to an output of the second summing unit;
- connecting a third summing unit to an output of the third integrator network;
- and
- feeding forward a modulated signal at the output of the second integrator network to an input of the third summing unit.
A method for modulating an input signal to produce an output digital signal, comprising:
- providing a first summing unit for receiving the input signal;
- connecting a first integrator network to an output of the first summing unit;
- connecting a second summing unit to an output of the first integrator network;
- connecting a second integrator network to an output of the second summing unit;
- providing a third integrator network for receiving an output of the second integrator network;
- connecting a third summing unit to an output of the third integrator network;
- and
- feeding forward a modulated signal at the output of the first integrator network to an input of the third summing unit.
A method for modulating an input signal to produce an output digital signal, comprising:
- providing a first summing unit for receiving an input signal;
- connecting a first integrator network to an output of the first summing unit;
- connecting a second summing unit to an output of the first integrator network;
- connecting a second integrator network to an output of the second summing unit;
- connecting a third summing unit to an output of the second integrator network;
- connecting a third integrator network to an output of the third summing unit;
- and
- feeding forward a modulated signal at the output of the first summing unit to an input of the third summing unit.
Dependencies are inferred from the claim text.