Transponder

摘要

A transponder for receiving a wireless electromagnetic query signal and for transmitting a wireless electromagnetic response signal with a coil acting as a first antenna for generating a first wired electrical incoming signal from the query signal and with at least one further coil acting as an antenna for generating a further wired electrical incoming signal from the query signal, and wherein an axis of the first coil and an axis of the further coil are differently aligned in space, and wherein the coils are assigned at least one means for limiting the voltage of the respective incoming signals, and wherein the incoming signals are routed, respectively, via a first full-wave rectifier for generating a rectified incoming signal, and wherein the rectified incoming signals are routed, respectively, to a current-controlled source of current for generating a current signal that corresponds to the respective incoming signal, and wherein the current signals are routed, respectively, to a peak value of current detector for generating a peak value of current signal, and wherein the peak value of current signals are routed to a comparison arrangement for comparing the generated peak value of current signals, and wherein the comparison arrangement is configured for generating a control signal that indicates the strongest peak value of current signal of the generated peak value of current signals.

主权项

1. A transponder, comprising:
a first coil coupled to receive a wireless electromagnetic query signal, the first coil generates a first wired electrical incoming signal from the query signal; at least one additional coil coupled to receive the wireless electromagnetic query signal, the at least one additional coil generates a second wired electrical incoming signal from the query signal, wherein a first axis of the first coil and a second axis of the at least one additional coil having different spatial alignments, at least one full-wave rectifier, coupled to the first coil and the at least one further coil, the at least one full-wave rectifier generating a first rectified incoming signal and a second rectified incoming signal from the first and second wired electrical incoming signal; a comparator that compares a first peak associated with the first rectified incoming signal and a second peak associated with the second rectified incoming signal, the comparator identifies a larger peak between the first and second peaks.