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:
Feb. 19, 2019
Filed:
May. 24, 2018
Nxp B.v., Eindhoven, NL;
Hermanus J. Effing, Overasselt, NL;
NXP B.V., Eindhoven, NL;
Abstract
A switching amplifier circuit () connected to drive an impedance-based antenna drive circuit () includes high side and low side switches (-) configured and connected to connect different reference voltages to first and second output nodes (ANTP, ANTN) in response to gating control signals during an active phase and a disabled phase, and also includes an output drive circuit () that provides a ramped output voltage drive signal to the first output node while the second output node is connected over the second low side electronic switch to the second reference voltage during a transition phase of operation between the disabled phase and active phase, where the ramped output voltage drive signal is characterized by a predetermined slew-rate between the second reference voltage and the first reference voltage over a specified time interval.