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






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






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






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






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






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






7. UHF and microwave passive tags






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






9. 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






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






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






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






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






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






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






16. '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






17. Reader communicates to a tag through reader's antennas - a separate device that is physically attached to a reader - at one of its antenna ports - by means of cable. Called this because it creates an electromagnetic field to couple with the tag.






18. 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






19. When two waves (out of phase) impose on each other and the original signal is cancelled. Nulls are created s a result






20. 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






21. Serves as writable or non-writable data storage






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






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






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






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






26. 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






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






28. 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






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






30. Smart cards - smart label - etc.






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






32. 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.






33. Inductive coupling and passive backscatter (capacitive coupling)






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






36. 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%)






37. 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...






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






39. 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






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






41. Dead zones that surround protrusions in antenna footprint






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






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






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






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






46. 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






47. 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






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






49. Inductive coupling and passive backscatter (capacitive coupling)






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