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:
Apr. 10, 2018
Filed:
Aug. 18, 2014
Ams Ag, Unterpremstaetten, AT;
Anton Pletersek, Orehova Vas, SI;
Vinko Kunc, Ljubljana, SI;
AMS AG, Unterpremstaetten, AT;
Abstract
A radio frequency system has a first and a second antenna terminal, a radio frequency transceiver coupled to the antenna terminals, a rectifier connected to the antenna terminals at its input side and a voltage limiter. The voltage limiter comprises a first and a second input terminal connected to the antenna terminals, and a first and a second diode element connected between the first respectively the second input terminal and a bias terminal. A regulation transistor is connected between the bias terminal and the reference potential terminal. A voltage controller has a reference input for receiving a reference signal, a feedback input connected to the bias terminal and a control output for providing a control potential to a control terminal of the regulation transistor on the basis of the reference signal and a signal at the bias terminal.