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






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






3. 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






4. Inductive coupling and passive backscatter (capacitive coupling)






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






6. 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






7. 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)






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






9. Inductive coupling and passive backscatter (capacitive coupling)






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






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






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






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






14. 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






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






16. 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






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






18. 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






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






20. Continuous web - no adhesive






21. 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






22. 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






23. 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






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






25. '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






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






27. IC Chip - Antenna/Inductor - Power Source






28. Smart cards - smart label - etc.






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






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






31. 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...






32. 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






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






34. Serves as writable or non-writable data storage






35. 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






36. 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






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






38. 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






39. 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






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






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






42. Die-cut web adhesive - paper face






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






44. 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.






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






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






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






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






49. 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






50. UHF and microwave passive tags