Phase jitter modulation

The Phasenjittermodulation (English phase jitter modulation) is a work based on the phase noise modulation procedures that ( RFID = radio- frequency identification) is used among other things in RFID systems. The method is adapted for the rapid identification of a large amount of RFID tags and standardized in ISO / IEC 18000-3, entitled RFID Air Interface Standard.

In which method a magnetic field is used with a carrier frequency of 13.56 MHz, which is used both for the transfer of energy to the RFID tag as well as for data transmission. PJM belongs to the group of so-called Vicinity - contactless tags, the RFID tags that can bridge a distance of up to 100 cm.

The advantage of PJM over older Vicinity standards (eg ISO 15693 ) is the high data transmission rate and the high number of RFID tags, which can be located in the reception area at the same time. With PJM can be identified up to 1500 items per second. PJM can be used where a large number of small, possibly stacked items to be identified. Due to its high speed, this technology can be used for example on a conveyor belt.

Applications

First applications are seen in the pharmaceutical field or in the document and media management.