How does it work?
LOCFIELD® — The antenna generates a localized electromagnetic field.
Key Concept – Coupled Mode Operation
The antenna typically looks like an ordinary coaxial cable—and in most cases can be treated as such.
A radial electromagnetic field is generated around the antenna, wich decays—depending on the reader power—over a short distance. Depending on the RFID tags being used, a read range of up to 2.5 m can be achieved.
The EM field is generated on the left end of the antenna shown above and runs back towards the feed point on the right. At a short distance before it reaches the feed point it is absorbed by a blocking element.
In this way a homogenous traveling wave is continuously stimulated forming a perfect read or energy zone for RFID or Wireless Communication or energizing of Smart Sensor Networks around the antenna.
The EM field follows the antenna along any complex 3D path, sharp curves or bends, and even if the antenna crosses itself.
Only a neglible part of the EM field is radiated. Consequently the antenna does not cause reflections or unwanted reads even if it is mounted close to a metal surface.
The antenna tuning is maintained in almost any mounting position or environment.
What is possible now?
The innovative LOCFIELD® UHF antenna technology enables RFID solutions, which were primarily the domain of HF RFID in the past.
Where can the antenna be used?
Manufacturing the antenna in many different lengths opens a wide field of almost endless usage models.