Frequency multiplexed radio frequency identification

US10121030B1 · kind B1 · utility

Assignee

• The United States of America as represented by the Administrator of the National Aeronautics and Space Administration · US

Inventors

• Patrick W. Fink · Charlotte, US
• Gregory Y. Lin · Friendswood, US
• Timothy F. Kennedy · Sugar Land, US
• Phong H. Ngo · Friendswood, US
• Lucas S. Kinion · Houston, US

Key dates

• Filing date: Jun 28, 2017
• Grant date: Nov 6, 2018
• Expiry date: Jun 28, 2037

Classification

• Technology area (CPC H): Electricity
• CPC primary: H04B1/713
• WIPO field: Telecommunications
• WIPO sector: Electrical engineering

Abstract

A radio frequency identification (RFID) system for frequency multiplexing includes, in one exemplary embodiment, and RFID interrogator configured for generating an RFID signal, wherein a channel frequency of the RFID signal changes over time; a first narrow band antenna, characterized by a first passband, the first passband corresponding to a first range of frequencies; a second narrow band antenna, characterized by a second passband, the second passband corresponding to a second range of frequencies, wherein the second range of frequencies differs from the first range of frequencies, whereby the second passband differs from the first passband; and first and second feed lines configured for feeding the RFID signal to each of the first and second narrow band antennas, respectively. Other embodiments include systems and methods including similar and different RFID components and aspects for frequency multiplexing.