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






2. 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...






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






4. 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






5. Continuous web - no adhesive






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






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






8. 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






9. 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






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






11. 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






12. '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






13. 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






14. Serves as writable or non-writable data storage






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






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






17. 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






18. 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






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






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






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






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






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






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






25. 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






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






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






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






29. 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






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






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






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






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. 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)






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






36. 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






37. Time for an associated tag to be read






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






39. Die-cut web adhesive - paper face






40. Die-cut web with adhesive - film face






41. IC Chip - Antenna/Inductor - Power Source






42. Smart cards - smart label - etc.






43. Inductive coupling and passive backscatter (capacitive coupling)






44. 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






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






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






47. Brains of the RFID tag






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






49. 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.






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