Signal detector
AssigneeUniversite De Lille
InventorsFrançois Danneville, Christophe Loyez
Life of this patent
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Abstract
A signal, in particular radio-frequency signal, detector (10), such as a detector of wake-up radio type has a first circuit (20) receiving at its input the signal, configured to set the operating point (M) at the output to a predefined DC voltage (Vm_DC) to which a variable part (ΔVm) which is dependent on the signal from the input is added. A second circuit (30) is connected at its input to the output of the first circuit (20) and configured to amplify the variable part (ΔVm) of the signal, this second circuit has a chain of at least two logic inverters (32) in a cascade and operating below the threshold.
Claims19
A signal detector comprising:
- a first circuit receiving at its input the signal, configured to set the operating point at the output to a predefined DC voltage to which a variable part which is dependent on the signal from the input is added, and
- a second circuit connected at its input to the output of the first circuit and configured to amplify the variable part of the signal, this second circuit comprising a chain of at least two logic inverters are positioned in a cascade and operate at a subthreshold operating regime,
- wherein the predefined DC voltage is selected to bias the input of at least one logic inverter of the second circuit into the subthreshold operating regime.
Dependencies are inferred from the claim text.