The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
May. 04, 2021
Filed:
Jul. 11, 2018
Fnv Ip B.v., Leidschendam, NL;
Dennis Van Weeren, Leidschendam, NL;
Arnoud Marc Jongsma, Vijfhuizen, NL;
Joachim Ulrich Seibert, Rijswijk, NL;
Abstract
A sensor circuit (), including a silicon photomultiplier, SiPM, sensor (), a voltage source (), a current-to-voltage converter (), and a limiting bias circuit (). The SiPM sensor () has avalanche photodiode, APD, elements () connected in parallel between a cathode (K) and an anode (A). The voltage source () is configured to apply a reversed bias voltage (Vb) across the SiPM sensor, so that each APD element operates in reverse-biased Geiger mode, and the APD elements operate in integration mode. The bias circuit () is connected between the voltage source () and the anode, and is configured to limit currents through the APD elements, and to present an AC load impedance for an alternating current within a predetermined operating frequency range (fo) generated by the APD elements at the anode (A) as well as a DC load impedance, such that said AC load impedance is lower than said DC load impedance.