Dual antenna rfid tag
AssigneeHynix Semiconductor Inc.
InventorsHee Bok KANG, Suk Kyoung HONG
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Abstract
A dual antenna RFID tag which can perform both Near Field (NF) communication and Far Field (FF) communication using a single RF tag is presented. The RFID tag includes an antenna unit and a voltage rectification unit. The antenna unit can perform communications in either or both a first and a second bandwidth. The voltage rectification unit can rectify and boost one or more radio signals received through the antenna unit and generate one or more power voltage impulses corresponding to the radio signals respectively.
Claims36
A radio frequency identification (RFID) tag comprising:
- an antenna unit configured to communicate within a first bandwidth and/or within a second bandwidth;
- and
- a voltage rectification unit configured to generate a plurality of DC power voltage impulses respectively corresponding to a plurality of radio signals from within the first and/or second bandwidths received at the antenna unit, the voltage rectification unit configured to rectify and to boost the received radio signals into the DC power voltage impulses.
29 The RFID tag according to claim 28, further comprising a driving unit configured, in response to the transmission signal, to operate a first transmission signal for transmitting within the first bandwidth and to operate a second transmission signal for transmitting within the second bandwidth.
The RFID tag according to claim 29, further comprising a modulation circuit unit configured to modulate the first transmission signal and the second transmission signal, and to transmit the modulated signals through the antenna unit.
An RFID tag comprising:
- an antenna unit including:
- a first antenna configured to perform communications within a first bandwidth and
- a second antenna configured to perform communication within a second bandwidth;
- and
- a voltage rectification unit configured to generate one or more power voltages corresponding to one or more radio signals received from the antenna unit, and configured to rectify and boost the radio signals, wherein the voltage rectification unit comprises:
- a clamping circuit configured to clamp and output the radio signals;
- and
- a rectification circuit configured to rectify the signals outputted from the clamping circuit and to generate DC voltage impulses.
Dependencies are inferred from the claim text.