Transponder
First Claim
1. A transponder for receiving a wireless electromagnetic interrogation signal and transmitting a wireless electromagnetic response signal, comprising:
- a first coil, coupled to receive the interrogation signal, the first coil acting as an antenna and generating a first wired electrical receive signal from the interrogation signal;
at least one further coil, coupled to receive the interrogation signal, the at least one further coil acting as an antenna and generating a second wired electrical receive signal from the interrogation signal, wherein an axis of the first coil and an axis of each of the at least one further coil are aligned differently in the space;
a plurality of full-wave rectifiers, coupled to the first coil and the at least one further coil, the plurality of full-wave rectifiers rectifying the first and second wired electrical receive signals; and
a summing element, coupled to the plurality of full-wave rectifiers, the summing element summing up the rectified first and second wired electrical receive signals generated by the plurality of full-wave rectifiers and generating a pulsating sum signal, the frequency of the pulsating sum signal being corresponding to twice the frequency of the interrogation signal.
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Accused Products
Abstract
Proposed is a transponder for receiving a wireless electromagnetic interrogation signal and for transmitting a wireless electromagnetic response signal with a first coil acting as an antenna for generating a first wired electrical receive signal from the interrogation signal, and with at least one further coil acting as an antenna for generating a further wired electrical receive signal from the interrogation signal, wherein an axis of the first coil and an axis of the further coil are aligned differently in the space, wherein in each case one full-wave rectifier for rectifying the respective receive signal is assigned to the coils, wherein a summing element for summing up the rectified receive signals generated by the full-wave rectifiers is provided in order to generate in this manner a pulsating sum signal, the frequency of which corresponds to twice the frequency of the interrogation signal.
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Citations
1 Claim
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1. A transponder for receiving a wireless electromagnetic interrogation signal and transmitting a wireless electromagnetic response signal, comprising:
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a first coil, coupled to receive the interrogation signal, the first coil acting as an antenna and generating a first wired electrical receive signal from the interrogation signal; at least one further coil, coupled to receive the interrogation signal, the at least one further coil acting as an antenna and generating a second wired electrical receive signal from the interrogation signal, wherein an axis of the first coil and an axis of each of the at least one further coil are aligned differently in the space; a plurality of full-wave rectifiers, coupled to the first coil and the at least one further coil, the plurality of full-wave rectifiers rectifying the first and second wired electrical receive signals; and a summing element, coupled to the plurality of full-wave rectifiers, the summing element summing up the rectified first and second wired electrical receive signals generated by the plurality of full-wave rectifiers and generating a pulsating sum signal, the frequency of the pulsating sum signal being corresponding to twice the frequency of the interrogation signal.
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Specification