Transponder
First Claim
1. A transponder comprising:
- a first antenna, coupled to receive an interrogation signal, the first antenna generates a first electrical signal from the interrogation signal;
a second antenna, coupled to receive the interrogation signal, the second antenna generates a second electrical signal from the interrogation signal, wherein a first axis of the first antenna and a second axis of the second antenna are aligned differently; and
a summing element, coupled to receive at least a portion of the first and second electrical signals, the summing element generates a pulsating sum signal from the at least a portion of the first and second electrical signals, the frequency of the pulsating sum signal being different from 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
19 Claims
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1. A transponder comprising:
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a first antenna, coupled to receive an interrogation signal, the first antenna generates a first electrical signal from the interrogation signal; a second antenna, coupled to receive the interrogation signal, the second antenna generates a second electrical signal from the interrogation signal, wherein a first axis of the first antenna and a second axis of the second antenna are aligned differently; and a summing element, coupled to receive at least a portion of the first and second electrical signals, the summing element generates a pulsating sum signal from the at least a portion of the first and second electrical signals, the frequency of the pulsating sum signal being different from the frequency of the interrogation signal. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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10. A method for generating a time base signal related from an interrogation signal, the method comprising:
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generating a first electrical signal derived from the interrogation signal received at a first antenna, the first antenna having a first axis; generating a second electrical signal derived from the interrogation signal received at a second antenna, the second antenna having a second axis aligned differently than the first axis; rectifying the first and second electrical signals; and summing the rectified first and second electrical signal, and generating a pulsating sum signal having a frequency that is different from the frequency of the interrogation signal by a factor. - View Dependent Claims (11, 12, 13, 14, 15, 16)
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17. A transponder comprising:
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a first antenna, coupled to receive the interrogation signal, the first antenna generates a first electrical signal from the interrogation signal; a second antenna, coupled to receive the interrogation signal, the second antenna generates a second electrical signal from the interrogation signal; a third antenna, coupled to receive the interrogation signal, the third antenna generates a third electrical signal from the interrogation signal, the axes of the first, second and third antennae are aligned differently; a first full-wave rectifier coupled to the first antenna, the first full-wave rectifier rectifying the first electrical signal; a second full-wave rectifier coupled to the second antenna, the second full-wave rectifier rectifying the second electrical signal; a third full-wave rectifier coupled to the third antenna, the third full-wave rectifier rectifying the third electrical signal; a summing element, coupled to receive at least a portion of the first, second and third rectified electrical signals, the summing element generates a pulsating sum signal having a frequency different from the frequency of the interrogation signal by a factor; a comparator coupled to the summing element, the comparator compares the pulsating sum signal with a reference signal in order to generate a first clock signal, a frequency of the first clock signal corresponding to the frequency of the pulsating sum signal. - View Dependent Claims (18, 19)
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Specification