Active Transponder

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The original form of the transponder technology

The first active transponders were used towards the end of WW2. They served there the identification friend or foe. The first passive, commercial RFID systems were introduced in the 70s in the area of anti-theft security and access control systems.

Gladly active transponders in existing machinery, equipment, control systems and vehicles are integrated, since particularly good integration conditions per se are present (common supply, interfaces, antennas, housing u.v.a.m.).

Advantages

Active tags have over passive transponders have their own power supply (battery, battery or external power or on-board network), as well as intelligent processor and memory chips. They therefore offer the following advantages:

  • faster communication
  • greater ranges
  • greater data storage
  • optional very accurate location functionality
  • sensors integrated
  • better security concepts possible

At a glance

Due to the very high safety standards and the optional positioning functionality make active transponder systems the first choice as Auto-ID in the following applications:

  • Security systems
  • Access control systems
  • immobilizers
  • tolling
  • Radio scanner location
  • Personnel tracking
  • vehicle tracking
  • vehicle tracking
  • Container management
Active transponders

 

Passive transponders
power supply

 

Battery, battery or onboard or mains

 

By radio waves from the RFID reader
useful life Depending on the power supply, e.g. Battery or battery capacity incl. Power Management

 

Read-only = unlimited

Read-write = high

price

 

medium to high

 

Low to Medium

 

memory large to very large

 

low
describability any

 

once to about 100,000 times
reach outdoor max. 800 meters

indoor max. 80 meters

 

a few millimeters up to max. 16 meters
reading speed

 

medium to very high
(depending on the technology)
low in LF

medium at HF and UHF

safety high to very high Low to medium
Active Transponder 5. February 2016