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






2. 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






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






4. Type of stationary reader that can print a bar code and create (i.e. write) an RFID tag on a smart label in an integrated operation - Reads the smart label tag that it has just written to validate the write operation. If the validation fails - it rej






5. Inductive coupling and passive backscatter (capacitive coupling)






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






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






8. 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






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






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






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






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






13. Inductive coupling and passive backscatter (capacitive coupling)






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






15. The act of writing the tag data by reader






16. 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






17. Die-cut web adhesive - paper face






18. Time for an associated tag to be read






19. 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






20. 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






21. 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.






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






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






24. Brains of the RFID tag






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






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






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






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






30. Optical and RFID hybrid






31. 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.






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






33. Serves as writable or non-writable data storage






34. 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






35. 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






36. 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)






37. IC Chip - Antenna/Inductor - Power Source






38. Smart cards - smart label - etc.






39. 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






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






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






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






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






44. Continuous web - no adhesive






45. 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






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






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






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






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






50. 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