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. 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






2. The act of writing the tag data by reader






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






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






5. Dead zones that surround protrusions in antenna footprint






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






7. Brains of the RFID tag






8. Die-cut web with adhesive - film face






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






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






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






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






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






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






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






16. Inductive coupling and passive backscatter (capacitive coupling)






17. '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






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. 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.






20. Optical and RFID hybrid






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






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






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






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






25. 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






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






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






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






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






30. Proximity systems (low range -mm) medium range (cm) and long range (m)






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






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






33. RF energy radiates from antenna in linear fashion - Provide longest range - Sensitive to the orientation of tag - Has single E-field component - Can have a narrow beam pattern - Best for application with known tag orientation






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






35. 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






36. Ranges upward from 1 GHz - Typically operates at either 2.45 GHz or 5.8 GHz - Can use both semi-active and passive tags - Has FASTEST data-transfer rate between tag and reader - Performs poorly in presence of metals and liquids - Antenna of a passive






37. IC Chip - Antenna/Inductor - Power Source






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






39. Serves as writable or non-writable data storage






40. 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






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






42. Most sensitive component of an RFID system - Housed in enclosures for easy mounting. Look like plain - shallow boxes. - Varying placement of this is usually the easiest adjustment while troubleshooting and is vital to achieving a high read rate






43. Smart cards - smart label - etc.






44. Inductive coupling and passive backscatter (capacitive coupling)






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






46. Die-cut web adhesive - paper face






47. Time for an associated tag to be read






48. Pattern(Footprint) - Power/Attenuation - and Polarization






49. 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






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