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:
Sep. 13, 2022
Filed:
Mar. 30, 2021
Endress+hauser Conducta Gmbh+co. KG, Gerlingen, DE;
Björn Haase, Stuttgart, DE;
Endress+Hauser Conducta GmbH+Co. KG, Gerlingen, DE;
Abstract
Disclosed is a fieldbus transmitter interface for a field device or a control center. The fieldbus transmitter interface comprises a computing unit, a digital gate, an analog transmission filter and a transmitter interface output. The computing unit is connected to the digital gate, and the digital gate is connected to the analog transmission filter, and the analog transmission filter is connected to the transmitter interface output. The computing unit comprises a pulse width modulator and a pulse width modulator clock that is suitable for generating a secondary signal coded by a duty cycle which is varied over time by the pulse width modulator clock. The pulse width modulator superimposes the secondary signal with a carrier signal, so that a digital transmission signal with a frequency of less than 150 kHz is generated. The digital gate and the analog transmit filter convert the digital transmission signal into an analog loop signal.