WIRELESS TRANSPONDER SYSTEM WITH POLARIZATION MODULATION
First Claim
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1. A wireless transponder system, comprising:
- at least one antenna configured to send transponder signals; and
a wireless transponder circuit coupled to the at least one antenna, the wireless transponder circuit having a first state for sending transponder signals of a first polarization type and a second state for sending transponder signals of a second polarization type different than the first polarization type, and the wireless transponder circuit configured to encode information in a sequence of the transponder signals of the first polarization type alternating with the transponder signals of the second polarization type.
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Abstract
A wireless transponder system includes at least one antenna configured to send transponder signals. The wireless transponder system also includes a wireless transponder circuit coupled to the at least one antenna, the wireless transponder circuit having a first state for sending transponder signals of a first polarization type and a second state for sending transponder signals of a second polarization type different than the first polarization type, and the wireless transponder circuit configured to encode information in a sequence of the transponder signals of the first polarization type alternating with the transponder signals of the second polarization type.
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Citations
46 Claims
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1. A wireless transponder system, comprising:
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at least one antenna configured to send transponder signals; and a wireless transponder circuit coupled to the at least one antenna, the wireless transponder circuit having a first state for sending transponder signals of a first polarization type and a second state for sending transponder signals of a second polarization type different than the first polarization type, and the wireless transponder circuit configured to encode information in a sequence of the transponder signals of the first polarization type alternating with the transponder signals of the second polarization type. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20)
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21. A wireless interrogator, comprising:
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at least one interrogator antenna configured to transmit interrogation signals and to receive transponder signals; and a wireless interrogator circuit coupled to the at least one interrogator antenna, the wireless interrogator circuit configured to decode information encoded as a sequence of transponder signals of a first polarization type alternating with transponder signals of a second polarization type different than the first polarization type. - View Dependent Claims (22, 23, 24, 25, 26, 27, 28, 29)
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30. A method of wireless communication comprising:
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receiving interrogation signals at a wireless transponder; determining information for transmission from the wireless transponder; and sending the information from the wireless transponder encoded in a sequence of transponder signals of a first polarization type alternating with transponder signals of a second polarization type different than the first polarization type. - View Dependent Claims (31, 32, 33, 34, 35, 36, 37, 38)
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39. A method of wireless communication comprising:
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transmitting interrogation signals from a wireless interrogator; receiving a sequence of transponder signals of different polarization types at the wireless interrogator; and decoding information encoded in the sequence of transponder signals of different polarization types. - View Dependent Claims (40, 41, 42, 43, 44, 45, 46)
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Specification