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:
Jul. 15, 2025
Filed:
May. 18, 2020
Telefonaktiebolaget Lm Ericsson (Publ), Stockholm, SE;
TELEFONAKTIEBOLAGET LM ERICSSON (PUBL), Stockholm, SE;
Abstract
A wireless communication node () and method therein for generating and transmitting a modulated radio frequency (RF) signal by means of backscattering are disclosed. The wireless communication node () comprises an antenna () configured to receive a illuminating RF signal, a switch () that has M states, a set of impedances () comprising Mimpedances (Z1, Z2 . . . ZM). The antenna () is coupled to the set of impedances () by the switch (). The wireless communication node () further comprises a modulating value generator () configured to generate modulating values based on data to be transmitted and a frequency offset and a switch controller () configured to switch the state of the switch () based on the generated modulating values such that the antenna () is connected to a selected impedance among the M impedances. The received illuminating RF signal at the antenna () is modulated by the generated modulating values and reflected by the antenna () to generate and transmit the modulated RF signal. The switching rate is an integer multiple of the data rate, the integer is greater than 1 and the center frequency of the modulated RF signal has the frequency offset with respect to the center frequency of the received illuminating RF signal.