Test your basic knowledge |

RFID Technology

Subject : it-skills
Instructions:
  • Answer 50 questions in 15 minutes.
  • If you are not ready to take this test, you can study here.
  • Match each statement with the correct term.
  • Don't refresh. All questions and answers are randomly picked and ordered every time you load a test.

This is a study tool. The 3 wrong answers for each question are randomly chosen from answers to other questions. So, you might find at times the answers obvious, but you will see it re-enforces your understanding as you take the test each time.
1. Also called an 'interrogator' - A device that can read from and write data to compatible RFID tags - Also doubles up as a writer






2. Used for storing data such as the reader configuration parameters and a list of tag reads






3. Inductive coupling and passive backscatter (capacitive coupling)






4. When two waves (out of phase) impose on each other and the original signal is cancelled. Nulls are created s a result






5. Measurement of power for radiation of antenna used in Europe






6. Silicon chip is picked up by robotized arm using precise vacuum nozzle. Chip is flipped so that its electrical contacts point face down. Chip is aligned with the antenna and pressure and heat is applied.






7. Reader that can operate in different frequencies or can use different tag-to-reader communication protocols (generally stationary)






8. Standards = EPC global & ISO 18000 - Different Organizations






9. Why ___________ is better: Cost of printed antennas varies between 24-44% of copper antennas - Printed antennas show 93-96% radiation efficiency compared to copper antennas...






10. Receives signal from reader and radiates a response back to the reader - LF or HF: induction coil - UHF or Microwave Frequency: printed antennas






11. Divides time into discrete time intervals (slots) . A packet can only be transmitted at the beginning of a slot - reduces the collision duration.






12. changes signal received from reader to include data that will be transmitted back to the reader






13. The act of writing the tag data by reader






14. Open image in meshed screens. Conductive ink "squeezed" thru open mesh.






15. Frequencies between 30-300 KHz - Generally use passive tags - have low data-transfer rates from the tag to the reader - and are especially good if the operating environment contains metals - liquids - dirt - snow - or mud. Active tags also available






16. In this mode - reader continuously reads tags in its read zone






17. Similar to guessing a number made of 1's and 0's by guessing each number one at a time






18. When two waves (in phase) impose on each other and enhance the original signal and give rise to protrusions






19. Die-cut web adhesive - paper face






20. In this this antenna type - the RF waves emanate in a linear pattern from the antenna. Waves have only one energy field






21. Interprets the signal received from reader and controls memory storage and retrieval






22. Uses a serial communication link to communicate with an application - Reader is physically connected to a computer's serial port using an RS-232 or RS-485 serial connection. Both of these connections have an upper limit on the cable length that can b






23. These are categorized into Aloha based protocols and tree based






24. The orientation of the transmitted electromagnetic field or the direction of oscillation of electromagnetically emitted waves






25. Brains of the RFID tag






26. Can automatically turn on/off reader based on some external event detected. Can be used to provide some kind of input trigger to a reader






27. Measurement of power for radiation of antenna used in US






28. The reflection of reader antenna signals on RF-opaque causes this






29. Reader transmits a continuous-wave RF signal into the reading environment






30. Also called a fixed reader - Mounted on a wall - portal - or some suitable structure in the read zone. Readers not generally very tolerant of harsh environmental conditions - therefore if installed outdoors or on moving objects - take care to ruggedi






31. Ranges from 300 MHz to 1GHz - Passive system operates at 915 MHz in the US and at 868 MHz in Europe - Active system operates at 315 MHz and 433 MHz - Can use both active and passive tags - Has a fast data-transfer rate between tag and reader - but pe






32. Low Frequency(LF) - High Frequency(HF) - Ultra high frequency (UHF) and Microwave frequency






33. The time during which a reader can emit RF energy to read tags






34. Die-cut web with adhesive - film face






35. Readability of a tag greatly depends on this and the angle at which the tag is presented to the reader






36. Optical and RFID hybrid






37. UHF and microwave passive tags






38. Generation= Timeline of Introduction - Gen 1 & 2 - Gen 2 protocol backward compatible






39. controls the internal functions under the command of the processor






40. Neighboring readers interrogate a tag simultaneously (can be easily solved because they can detect this and communicate to each other)






41. Reader communicates to a tag through reader's antennas - a separate device that is physically attached to a reader - at one of its antenna ports - by means of cable. Called this because it creates an electromagnetic field to couple with the tag.






42. A mechanical device for controlling or moving objects - A programmable logic controller (PLC) - robot arm - mechanical arm - etc.






43. Die used to "stamp" out the shape of antenna. Take up roller rolls the unused material into waste roll.






44. Continuous web - no adhesive






45. Fixed to meet FCC and other regulatory requirements. The signal can be decreased or attenuated to limit the tag read window or aim it only at tags you want to read






46. An electronic signal or indicator - Audible alarms - strobes - light stacks - etc.






47. Responsible for implementing the reader protocol to communicate with compatible tags






48. Developed in the 1970s for a radio packet network at the University of Hawaii (hence the name) - 4 tags and 1 reader - Allows tags to collide partially (Theoretically proven maximum utilization=18.4%)






49. Provides electrical power to other tag elements - Can harvest power from the signal received from the reader - Can have its own internal power source - Active - semi-passive and passive






50. Every time a tag is read - it is saved to this