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. 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






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






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






4. Inductive coupling and passive backscatter (capacitive coupling)






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






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






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






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






9. 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






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






11. UHF and microwave passive tags






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






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






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






15. Smart cards - smart label - etc.






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






17. IC Chip - Antenna/Inductor - Power Source






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. Brains of the RFID tag






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






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






22. 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






23. 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






24. Serves as writable or non-writable data storage






25. 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






26. 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






27. 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%)






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






29. 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.






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






31. The act of writing the tag data by reader






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






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






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






35. 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






36. Optical and RFID hybrid






37. 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






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






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






40. Die-cut web adhesive - paper face






41. Die-cut web with adhesive - film face






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






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






44. Uses a serial communication link to communicate with an application - Reader is physically connected to a computer's serial port using an RS-232 or RS-485 serial connection. Both of these connections have an upper limit on the cable length that can b






45. Dead zones that surround protrusions in antenna footprint






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






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






48. Inductive coupling and passive backscatter (capacitive coupling)






49. 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






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