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






2. 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






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






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






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






7. UHF and microwave passive tags






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






9. Smart cards - smart label - etc.






10. Inductive coupling and passive backscatter (capacitive coupling)






11. Inductive coupling and passive backscatter (capacitive coupling)






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






13. 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






14. 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






15. 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...






16. 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






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






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






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






20. Serves as writable or non-writable data storage






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






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






23. IC Chip - Antenna/Inductor - Power Source






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






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






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






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






28. Die-cut web with adhesive - film face






29. 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






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






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






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






33. 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






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






35. 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






36. 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






37. 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






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






39. 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






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






41. 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






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






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






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






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






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






47. 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)






48. The act of writing the tag data by reader






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






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