Requirements and solutions for 2'45 GHz RFID systems1

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ISO 18000-4 Mode 4
Two modes for RFID on 2.45 GHz? Presented
by Mikael Willgert M.Sc.E.Ph. Development mgr,
Tagmaster
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• 2.45 GHz enables unique characteristics
• Long reading range 1-10 meters
• Small size Credit card or smaller
• Long battery life time 10 years and more
• High passage speed 200 km/h and more
• Defined reading zone
• Multiple ID-tags in the reading zone
• Low cost
• Internationally accepted frequency

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• TagMaster target applications
• All type of Item Management where the object is
• Large
• Identified many times
• The applications range from Parking, Vehicle ID,
  Hospital, Mail distribution, baggage
  handling...Just any type of large item!

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Requirements
Data handled by ID-tag
Com. range
Data handled by network
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Technology
Data handled by ID-tag

• Passive
• Data memory
• in ID-tag
• R/W

• Battery assisted
• Data memory in ID-tag
• R/W

Com. range

• Passive
• OTP

• Battery assisted
• RO

Data handled by network
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Applications
Data handled by ID-tag

• Small objects
• No Network connection

• Large objects
• No network connection

Com. range

• Small objects
• Network connected readers

• Large objects
• Network connected readers

Data handled by network
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How to enable the unique characteristics for Long
Range read only system.
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Requirement and solution

• Long reading range 1-10 m
• The ID-tag is battery assisted to not limit
  reading range by use of short distance power feed
  circuits
• 2.45 GHz frequency is well suited to enable high
  antenna directivity and efficiency

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Requirement and solution

• Long battery life time, 10 years
• No active high frequency circuits in the ID-tag
• The ID-Tag clock frequency is low and the
  modulation is efficient to enable low power
  consumption. 32 KHz clock frequency can be used
  (as is used in ordinary wrist-watches)
• No receiver channel that consumes power

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Requirement and solution

• Small size, credit card
• Low power consumption enable small batteries.
• No active microwave circuits enable small circuit
  design
• 2.45 GHz frequency enable small antenna size

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Requirement and solution

• High passage speed, 200 km/h
• No channel allocation procedure (the reader
  selects frequency)
• Just ID transfered (no data)
• ID-tag always active. Communication without
  wakeup procedure

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Requirement and solution

• Defined reading zone
• Signal reduction as distance 4 which rapidly
  limits longer distance readings
• 2.45 GHz frequency is well suited to enable high
  antenna directivity, which can be used to reduce
  the reading sector

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Requirement and solution

• Multiple ID-tags in the reading zone
• The ID-tag is silent for a randomised period to
  enable reading of more distant ID-tags within the
  reading zone

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Requirement and solution

• Low cost
• No active high frequency circuits are required
• Small and low cost lithium batteries can be used
  as power consumption is extremely low (microwatt)
• 2.45 GHz frequency is enough low to enable use
  of low cost reader

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Requirement and solution

• Internationally accepted frequency
• 2.45 GHz is possible to use for RFID systems in
  almost all parts of the world
• Bluetoth / Wireless LAN

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• Conclution The proposed technical solutions will
  make it possible to meet requirements for large
  Item Management
• Back-scattering technique
• Battery assisted ID-tag
• Low ID-tag clock frequency
• 2.45 GHz frequency
• ID-tag always active
• Randomised silence period
• No receiver channel

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• Other conclutions
• LAN and WAN by use of ethernet, internet, GPRS
  ...etc reduces need for data storage in the
  ID-tag. Just handling the ID is sufficient in
  most cases for Long Range applications.
• Bluetoth will offer solutions for handling of
  large data amounts
• It can be questioned if a high speed R/W standard
  is required now for Long Range RFID!

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• Which proposal to select for Long range 2.45 GHz?
  
• The standard proposals have to prove lifetime,
  cost, market acceptance and other important
  characteristics before being selected.
• No proposal present that proves fulfillment of
  these criterias for both high speed R/W and Read
  Only

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• How reach one mode for 2.45 GHz long range?
• Just handling the ID is sufficient in most cases
  for long range ID.
• The standard for RFID on 2.45 GHz Long Range to
  focus on read-only low system??

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Two modes on 2.45 GHz
Product view
Data handled by ID-tag
Battery assisted Data memory in ID-tag R/W
Passive
Com. range
Battery assisted Read-only
Data handled by network
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How does TagMasters system position?
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• TagMasters system meets the main requirement for
  identification of large moving items today!
• TagMasters system is available today and is
  already in use in hundreds of installations all
  over the world to serve customers need!
• The applications range from Parking, Vehicle ID,
  Hospital, Mail distribution, baggage
  handling...Just any type of large item!

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• TagMasters system is proven regarding cost,
  lifetime and market acceptance
• TagMasters system is approved according to FCC
  and EU requirements.

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Two modes on 2.45 GHz
Data handled by ID-tag
Battery assisted Data memory in ID-tag R/W
Passive
Com. range
Battery assisted Read-only
Data handled by network
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Proposal for ISO 18000-4 Long range RO