Infineon Technologies Ag

Decawave Limited

Istvan Kovacs

Michael McLaughlin

Mici McCullagh

Marius-Georghe Neag

Marius-Gheorghe Neag

Gavin Marow

Paul-Nutu Miresan

A current sense circuit may comprise a first circuit node and a second circuit node configured to be coupled to a first terminal and a second terminal of a current sense resistor, respectively; differential amplifier including a first input and a second input which are coupled to the first circuit node and the second circuit node via a first input resistor and a second input resistor; a voltage source, configured to set the voltage at the first input of the differential amplifier; and a controllable current mirror configured to sink or source a first current in its input branch based on one or more outputs of the differential amplifier and to generate a corresponding second current in its output branch. The input branch is coupled to the second input of the differential amplifier. A biasing circuit is coupled to the controllable current mirror.

Current sense circuit including a controllable current mirror and a biasing circuit

In a receiver facility in an ultra-wideband communication system, a dual-mode circuit adapted to operate in a selected one of three operating modes without changes in circuit topology: a calibration mode adapted to render the circuit substantially independent of circuit component mismatches; a frequency comparator mode adapted to indicate whether the frequency of a first periodic signal is larger or smaller than the frequency of a second periodic signal; and an early-late detector mode adapted to indicate whether the 1rising edge of the first periodic signal arrived sooner or later than the 1rising edge of the second periodic signal applied.

Frequency comparator and early-late detector

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Cluj-Napoca, Romania

Istvan Kovacs