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






2. Optical and RFID hybrid






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






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






5. 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...






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






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






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






9. 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.






10. Die-cut web adhesive - paper face






11. Die-cut web with adhesive - film face






12. 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






13. The sender of this found out whether the transmission was successful by listening to the broadcast. If there was a collision - the sender transmitted after a random waiting period. The tags periodically send data packets with random quiet periods and






14. 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%)






15. '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






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






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. Measurement of power for radiation of antenna used in Europe






19. 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






20. IC Chip - Antenna/Inductor - Power Source






21. 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)






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






23. Smart cards - smart label - etc.






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






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






26. Continuous web - no adhesive






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






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






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






30. 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






31. 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






32. 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






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






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






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






36. UHF and microwave passive tags






37. 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






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






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






40. 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






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






42. Serves as writable or non-writable data storage






43. Inductive coupling and passive backscatter (capacitive coupling)






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






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






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






47. 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






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






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






50. 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







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