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






2. 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






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






4. 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.






5. 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






6. Determines the read zone of a reader - Also called an antenna pattern - 3D region shaped somewhat like an ellipsoid or a balloon projecting out the front of the antenna. Never uniformly shaped like an ellipsoid but almost always contains deformities






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






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






9. Brains of the RFID tag






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






11. 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






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






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






14. 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






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






16. 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






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






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






19. 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






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






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






22. 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






23. UHF and microwave passive tags






24. 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.






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






26. 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%)






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






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






29. 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






30. Optical and RFID hybrid






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






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






33. Inductive coupling and passive backscatter (capacitive coupling)






34. 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






35. '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






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






37. 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






38. Inductive coupling and passive backscatter (capacitive coupling)






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






40. 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






41. 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)






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






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






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






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






46. Die-cut web adhesive - paper face






47. Time for an associated tag to be read






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






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






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