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公开(公告)号：US12196793B2
公开(公告)日：2025-01-14
申请号：US18047843
申请日：2022-10-19
Applicant: NXP B.V.
Abstract: It is described an attenuation measurement device (100), comprising: i) a detector unit (110) having a coupling capacitance (120), and an input capacitance (130), wherein the detector unit (110) is configured to produce a detector output signal (112a,b) in reply to an input signal received at the coupling capacitance (120) and/or at the input capacitance (130); ii) a test unit (140), coupled to the detector unit (110), and configured to provide a test signal (141) with at least one known signal property as a first input signal to the coupling capacitance (120); iii) a calibration unit (150), coupled to the detector unit (110), and configured to provide a calibration signal (151) as a second input signal to the input capacitance (130); and iv) a control unit configured to a) determine a first detector output signal (112a) produced by the detector unit (110) in response to the test signal (141), b) identify a specific calibration signal (151) that yields a second detector output signal (112b) that is comparable to the first detector output signal (112a), and c) derive a capacitance-indicative information based on the identified specific calibration signal (151).
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公开(公告)号：US20230176103A1
公开(公告)日：2023-06-08
申请号：US18047843
申请日：2022-10-19
Applicant: NXP B.V.
IPC: G01R27/26
CPC classification number: G01R27/2605 , G01R27/2611 , G01R27/2688
Abstract: It is described an attenuation measurement device (100), comprising:
i) a detector unit (110) having a coupling capacitance (120), and an input capacitance (130), wherein the detector unit (110) is configured to produce a detector output signal (112a,b) in reply to an input signal received at the coupling capacitance (120) and/or at the input capacitance (130);
ii) a test unit (140), coupled to the detector unit (110), and configured to provide a test signal (141) with at least one known signal property as a first input signal to the coupling capacitance (120);
iii) a calibration unit (150), coupled to the detector unit (110), and configured to provide a calibration signal (151) as a second input signal to the input capacitance (130); and
iv) a control unit configured to
a) determine a first detector output signal (112a) produced by the detector unit (110) in response to the test signal (141),
b) identify a specific calibration signal (151) that yields a second detector output signal (112b) that is comparable to the first detector output signal (112a), and
c) derive a capacitance-indicative information based on the identified specific calibration signal (151).-
公开(公告)号：US20240154604A1
公开(公告)日：2024-05-09
申请号：US18497012
申请日：2023-10-30
Applicant: NXP B.V.
CPC classification number: H03H11/1217 , G01S13/34
Abstract: In accordance with a first aspect of the present disclosure, an active RC-type filter is provided, comprising: an input, an output and a signal path between said input and output; at least one capacitor bank and at least one resistor bank, wherein said capacitor bank and resistor bank are integrated into the signal path; wherein the resistor bank comprises a plurality of resistor ladders; wherein each one of said resistor ladders comprises a plurality of resistors connected in series; wherein each one of said resistors has an input node configured to be coupled selectively to the signal path through one of a plurality of controllable switches; and wherein said resistor ladders have output nodes directly coupled to each other and to the signal path. In accordance with a second aspect of the present disclosure, a corresponding method of implementing an active RC-type filter is conceived.
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