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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. Used to transmit AC power and the clock cycle via its antennas to the tags in its read zone






2. Inductive coupling and passive backscatter (capacitive coupling)






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






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






5. Mount the tiny chip to a strap - Greater handling ability - Possibility to use very small chips - Possibility of higher volume production - Fluidic Self Assembly






6. 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






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






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






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






10. 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






11. Receives analog signals from the tag via the reader antenna






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






13. Process of creating a tag and uniquely associating it with an object






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






15. Also called an 'interrogator' - A device that can read from and write data to compatible RFID tags - Also doubles up as a writer






16. Die-cut web with adhesive - film face






17. The 3D energy field generated by the antenna (also called reading area)






18. 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.






19. This type of antenna is largely unaffected by tag orientation - Preferred in system that uses high UHF or microwave frequencies in an operating environment where there is a high degree of RF reflectance (due to presence of metals and so forth)






20. More than one tag tries to respond to a reader at the same time.






21. Time for an associated tag to be read






22. 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.






23. The sender of this found out whether the transmission was successful by listening to the broadcast. If there was a collision - the sender transmitted after a random waiting period. The tags periodically send data packets with random quiet periods and






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






25. Class= Functionality - - Class 0 -1 -2 -3 -4 & 5






26. 'Central nervous system' of entire RFID hardware system. Establishing communication with and control of this component is the most important task of any entity which seeks integration






27. The act of writing the tag data by reader






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






29. Die-cut web adhesive - paper face






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






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






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






33. UHF and microwave passive tags






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






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






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






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






38. 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...






39. IC Chip - Antenna/Inductor - Power Source






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






41. Broadcasts the reader transmitter's RF signal into its surroundings and receives tag responses on the reader's behalf. Therefore - proper positioning of these (NOT THE READERS) is essential for good read accuracy






42. Serves as writable or non-writable data storage






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






44. Dead zones that surround protrusions in antenna footprint






45. RF energy radiates from antenna in circular fashion - Slightly reduced range - Provides greater tolerance to tags in various orientation and bounce off of and bypass obstructions - 2 E-field components that are equal in magnitude - 90 degrees out of






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






47. Can reduce power by placing this device in the transmission line. As a result - the antennas signal is reduced and the read range diminished. Proves useful in situations where the read zone needs to be constrained as a part of system requirements so






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






49. Image "burned" into photopolymer layer. All copper removed except where image was burned. Copper antenna goes through additional processes to protect from oxidation






50. Brains of the RFID tag







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