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






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






3. Continuous web - no adhesive






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






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






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






7. 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.






8. Time for an associated tag to be read






9. UHF and microwave passive tags






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






11. 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)






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






13. Smart cards - smart label - etc.






14. 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






15. Inductive coupling and passive backscatter (capacitive coupling)






16. 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.






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






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






19. IC Chip - Antenna/Inductor - Power Source






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






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






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






23. 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






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






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






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






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






28. 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%)






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






30. 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






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






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






33. 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






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






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. controls the internal functions under the command of the processor






37. 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






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






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






40. Die-cut web with adhesive - film face






41. 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






42. 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






43. Inductive coupling and passive backscatter (capacitive coupling)






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






45. 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...






46. Serves as writable or non-writable data storage






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






48. The act of writing the tag data by reader






49. Optical and RFID hybrid






50. 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