Skip to main content
U.S. flag

An official website of the United States government

Official websites use .gov
A .gov website belongs to an official government organization in the United States.

Secure .gov websites use HTTPS
A lock ( ) or https:// means you’ve safely connected to the .gov website. Share sensitive information only on official, secure websites.

Baseband Voltage and Power in Load-Modulated Digital Backscatter

Published

Author(s)

Daniel G. Kuester, David R. Novotny, Jeffrey R. Guerrieri, Zoya Popovic

Abstract

Passive digital backscatter signals in systems like radio frequency identification (RFID) are usually received along with strong interference from a leaked carrier. The simplest way to quantify the “useful” communication signal is to separate an amplitude-shift keying (ASK) or biphase-shift keying (BPSK) component from the combined signal. This letter investigates the suitability of each in terms of basic signal theory and conservation of energy, and relates measurable properties of their baseband signals with “backscattered power.” We find that defining RFID backscatter as BPSK has particular advantages from both perspectives that may warrant adjusting current test standards.
Citation
IEEE Antennas and Wireless Propagation Letters
Volume
11

Keywords

Baseband, Electromagnetic scattering, Radio Link, RFID tags

Citation

Kuester, D. , Novotny, D. , Guerrieri, J. and Popovic, Z. (2012), Baseband Voltage and Power in Load-Modulated Digital Backscatter, IEEE Antennas and Wireless Propagation Letters (Accessed January 18, 2022)
Created November 15, 2012, Updated January 27, 2020