Interrogator Communications Multi Standard Reader

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Interrogator CommunicationsMulti Standard
Reader

• Briefing to
• National Committee for Information Technology
  Standards (NCITS) Technical Committee T6
• Orlando, February 19, 2002

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Why Develop a standard for MSR?

• Historically, each vendor of RFID tags has
  incorporated its individual protocol into their
  own interrogation device, thereby creating a
  mutually exclusive relationship between tag and
  reader.
• Absence of a worldwide standard has resulted in
  very slow implementation of RFID systems, as the
  end users feared the premature obsolescence of
  their equipment

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Multi Standard (Common) Reader (MSR)- Overview

• Multi standard reader (MSR) will be an electronic
  system that is able to read/write to multiple
  types of tag either separately or simultaneously.
  
• Each reader should support various modulation
  schemes available with transponders and should
  also support different coding schemes, protocols,
  data rates etc.,
• MSR would ensure interoperability and provide end
  user with the confidence and pragmatic
  alternatives for procurement of transponders from
  different suppliers.

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Multi Standard (Common) Reader

• Advantages of using MSR
• Use of MSR will lower the transponders cost
• A larger choice of tag types will be available to
  the end user for use
• Application can make the maximum use of the
  capabilities of each tag types
• Many different types of transponders can be used
  transparently within the same population
• A MSR solution will provide the ability to
  support new types of transponders, as they become
  available through the provision of software
  change only
• The separation of tag and reader supply now
  allows end-users to negotiate with tag suppliers
  on an "arms length" basis.

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MSR Requirements

• MSR architecture should incorporate
  Multi-Protocol, Multi-Frequency ("MP/MF")
  capability.
• MSR should enable virtually any Transponder (RFID
  tag) to be interrogated by the same device,
  regardless of the manufacturer or the frequency
  at which the tag operates.
• MSR should be capable of interfacing with passive
  and active tag protocols

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Elements of MSR

• Transceiver Architecture Design
• Receiver
• LNA
• Mixer
• Filter
• VCO

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Elements of MSR (contd.)

• Transmitter
• Power amplifier
• Buffer amplifier
• Mixer
• Filter
• Synthesizer
• Modulator
• Demodulator

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Elements of MSR (contd.)

• Antenna
• Low Cost Packaging

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Transmit Channel

• The power amplifier and the linearity of such
  amplifier in multi-channel transmission mode
  should be specified such as to ensure that there
  exists no signal cross talk between adjacent
  channels.  
• The efficiency of the unit shall be such that it
  minimizes battery drain.

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Receive Channel

• Specify a low noise amplifier
• Specify a mixer to convert, via heterodyning, the
  microwave signals to convenient IF frequency
• Specify a local oscillator to energize the mixer
• In specifying the receive channel design we
  should ensure that a high gain in the LNA circuit
  design is achieved

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Transceiver Package

• Use low cost material for the packaging of
  individual transmit and receive chips and
  transceiver housing
• overall unit manufacturing cost should be in the
  price range of 300-400 per unit
• The housing shall be channelized to provide
  proper isolation between the transmit and receive
  channels
• For the DC and RF interconnects, the use of low
  loss gold post interconnects shall be evaluated
  and if acceptable recommended

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Antenna

• Recommend the use of a micro-strip flat plate
  antenna to reduce the size and cost of the MSR
• integrated within the transceiver using gold post
  technique.
• shall have a gain of 50-60 dB

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USCS Requirements
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USCS Requirements(contd.)
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USCS Requirements(contd.)
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Conclusion

• These are our thoughts. We are open for
  discussion.
• If the requirements are acceptable to the
  committee, identify a working group to draft the
  requirements.
• THANK YOU FOR LISTENING