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






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






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






4. 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...






5. 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.






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






7. 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






8. Die-cut web adhesive - paper face






9. 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






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






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






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






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






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






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






16. 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






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






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






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






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






21. IC Chip - Antenna/Inductor - Power Source






22. 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






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






24. 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






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






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






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






28. Optical and RFID hybrid






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






30. Die-cut web with adhesive - film face






31. Inductive coupling and passive backscatter (capacitive coupling)






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






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






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






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






36. 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






37. 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






38. 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






39. Serves as writable or non-writable data storage






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






41. 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






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






43. 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)






44. Continuous web - no adhesive






45. The act of writing the tag data by reader






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






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






48. 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






49. '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






50. Smart cards - smart label - etc.