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






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






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






4. '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






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






6. 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






7. 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






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






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






10. UHF and microwave passive tags






11. 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%)






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






13. Brains of the RFID tag






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






15. Tags collide completely or not at all (Theoretically proven maximum utilization= 36.8%)






16. 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






17. Die-cut web with adhesive - film face






18. LF and HF passive tags - Current flowing through a conductor generates a magnetic field around the conductor and vice versa - Readers antenna uses current to generate magnetic field - Tag's antenna when exposed to the magnetic field generates the cur






19. 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






20. 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






21. Inductive coupling and passive backscatter (capacitive coupling)






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






23. Reader receives and executes commands from an application running on a host machine from a user using a vendor-supplied client to communicate with the reader. After reader fully executes the current command - it waits for the next. Reader can execute






24. Smart cards - smart label - etc.






25. One of the most versatile actuators. Widely used in manufacturing plants. They enable a variety of actions to be performed (such as monitoring and controlling a product packaging line - or applying a predetermined amount of torque to nuts in a mechan






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






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






28. Time for an associated tag to be read






29. 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.






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






31. To disassociate the tag from a tagged object and optionally destroy it






32. Dead zones that surround protrusions in antenna footprint






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






34. 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






35. The act of writing the tag data by reader






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






37. Continuous web - no adhesive






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






39. 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.






40. IC Chip - Antenna/Inductor - Power Source






41. Die-cut web adhesive - paper face






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






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






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






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






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






47. Optical and RFID hybrid






48. Serves as writable or non-writable data storage






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






50. 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