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. Dead zones that surround protrusions in antenna footprint






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






3. UHF and microwave passive tags






4. Die-cut web with adhesive - film face






5. 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






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






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






8. 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






9. Inductive coupling and passive backscatter (capacitive coupling)






10. 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






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






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






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






14. 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






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






16. More than one tag tries to respond to a reader at the same time.






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






18. 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






19. Serves as writable or non-writable data storage






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






21. Smart cards - smart label - etc.






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






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






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






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






26. The act of writing the tag data by reader






27. IC Chip - Antenna/Inductor - Power Source






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






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






30. 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






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






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






33. Continuous web - no adhesive






34. 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






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






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






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






38. '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






39. 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






40. Used for storing data such as the reader configuration parameters and a list of tag reads






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






42. 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






43. 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.






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






45. 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






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






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






48. 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






49. 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






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