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:
Dec. 09, 2025
Filed:
Mar. 27, 2024
Zebra Technologies Corporation, Lincolnshire, IL (US);
Alpaslan Demir, East Meadow, NY (US);
Amit Asthana, Germantown, MD (US);
Mark W. Duron, Mastic, NY (US);
Zebra Technologies Corporation, Lincolnshire, IL (US);
Abstract
Techniques for improving energy efficiency of a Radio-Frequency Identification (RFID) reader are described herein. A power control algorithm controlling a power amplifier of the RFID reader adjusts a bias setting of the power amplifier at different time periods during operation of the RFID reader. Particularly, in aspects, the power control algorithm biases the power amplifier at a first bias setting during a first time period when the RFID reader transmits a modulated continuous waveform conveying information to RFID tags in an environment, and biases the power amplifier at a second, different bias setting during a second time period when the RFID reader transmits an unmodulated continuous waveform. By adjusting to the second bias setting, the power control algorithm improves energy/power efficiency of the RFID reader during the second time period, thereby extending the single-charge lifetime of the RFID reader when implemented as a battery powered unit.