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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. Die-cut web adhesive - paper face






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






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






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






5. Smart cards - smart label - etc.






6. 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






7. IC Chip - Antenna/Inductor - Power Source






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






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






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






11. Dead zones that surround protrusions in antenna footprint






12. Inductive coupling and passive backscatter (capacitive coupling)






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






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






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






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






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






18. 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%)






19. 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






20. 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...






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






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






23. 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






24. 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






25. 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






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






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






28. Optical and RFID hybrid






29. 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






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






31. The act of writing the tag data by reader






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






33. Inductive coupling and passive backscatter (capacitive coupling)






34. Die-cut web with adhesive - film face






35. 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






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






37. 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






38. 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






39. 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)






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






41. 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






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






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






44. 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






45. 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






46. Time for an associated tag to be read






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






48. 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.






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






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







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