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






2. 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






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






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






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






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






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






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






9. 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






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






11. 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.






12. 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...






13. Optical and RFID hybrid






14. Serves as writable or non-writable data storage






15. 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






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






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






18. The act of writing the tag data by reader






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






20. Smart cards - smart label - etc.






21. Die-cut web with adhesive - film face






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






23. 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)






24. 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






25. Inductive coupling and passive backscatter (capacitive coupling)






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






27. 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






28. Continuous web - no adhesive






29. Inductive coupling and passive backscatter (capacitive coupling)






30. Time for an associated tag to be read






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






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






33. 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






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






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






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






37. 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






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






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






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






41. IC Chip - Antenna/Inductor - Power Source






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






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






44. 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






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






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






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






48. 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






49. 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






50. 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







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Can you answer 50 questions in 15 minutes?


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