METHOD OF COMMUNICATIONS IN A BACKSCATTER SYSTEM INTERROGATOR, AND BACKSCATTER COMMUNICATIONS SYSTEM

摘要

An interrogator (26) for use in a backscatter system, the interrogator (26) comprising an antenna (R1) configured to receive a backscatter signal; an IQ downconverter coupled to the antenna and configured to downconvert the backscatter signal to produce I and Q signals; a combiner coupled to the IQ downconverter and configured to combine the I and Q signals to produce a combined signal; and an analog to digital converter coupled to the combiner and configured to convert the combined signal to a digital signal. A method of communications in a backscatter system, the method comprising receiving a backscatter signal; downconverting the backscatter signal with an IQ downconverter to produce I and Q signals; combining the I and Q signals to produce a combined signal; and converting the combined signal to a digital signal.