Patent ID: 11929792
Assignee: TELEFONAKTIEBOLAGET LM ERICSSON (PUBL)
Field: Electrical machinery, apparatus, energy (Electrical engineering)
Classification: CPC H | IPC H

Claim 13:
14. The energy transmitter of claim 13 wherein the energy transmitter comprises:
one or more transmitters;
one or more receivers;
a plurality of antennas coupled to the one or more transmitters and the one or more receivers; and
processing circuitry connected to the one or more transmitters and the one or more receivers, the processing circuitry configured to cause the energy transmitter to:
for each time period (TPi) of the plurality of time periods ({TPi}i=0,1, . . . , I-1):
for each time slot (TSi,j) of the one or more time slots ({TSi,j}j=0,1, . . . , J-1 
transmit, during the time slot (TSi,j) of the time period (TPi) on the frequency fmod(1,2), the radio frequency signal (ST(i,j)) that is modulated with the signature of the particular energy harvester; and

attempt, during the time period (TPi), to receive, from the particular energy harvester on the frequency fmod(1+1,2), a radio frequency signal (SR(i)) that is modulated with the signature of the particular energy harvester.