* It is a data collection system based on tiny micro-chips attached to a box, pallet or an individual item that communicates with other devices using radio waves. Device readers capture the data from tags and, in some cases, write to them as well. The software then collates and distributes the data.
* It is nowadays used mostly in retail, asset tracking and logistics fields.
*An RFID tag is a small object, such as an adhesive sticker, that can be attached to or incorporated into a product. RFID tags contain antennas to enable them to receive and respond to radio-frequency queries from an RFID transceiver.
Showing posts with label radio waves. Show all posts
Showing posts with label radio waves. Show all posts
Monday, February 25, 2008
SAR
* It stands for Specific Absorption Rate – the count which specifies the amount of radio waves (radio frequency energy) absorbed by the body when using a mobile phone.
* Now the government (Telecom Engineering Centre of the DoT) is debating the issue and is likely to make it mandatory for all cell phone manufacturers to make this information available as an option on the cell phones. Further it may prescribe an upper limit of the SAR. Cell phones not complying with this limit will not be allowed to be sold in India.
* Already US and EU have upper limits at 1.6 watts/kg and 2 w/kg respectively.
* Now the government (Telecom Engineering Centre of the DoT) is debating the issue and is likely to make it mandatory for all cell phone manufacturers to make this information available as an option on the cell phones. Further it may prescribe an upper limit of the SAR. Cell phones not complying with this limit will not be allowed to be sold in India.
* Already US and EU have upper limits at 1.6 watts/kg and 2 w/kg respectively.
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