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. IC Chip - Antenna/Inductor - Power Source






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






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






4. RF energy radiates from antenna in circular fashion - Slightly reduced range - Provides greater tolerance to tags in various orientation and bounce off of and bypass obstructions - 2 E-field components that are equal in magnitude - 90 degrees out of






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






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






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






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






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






10. 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






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






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






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






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






15. Die-cut web with adhesive - film face






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






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






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






19. 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






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






21. 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






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






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






24. The act of writing the tag data by reader






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






26. Die-cut web adhesive - paper face






27. 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






28. 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.






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. Brains of the RFID tag






31. UHF and microwave passive tags






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






33. 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






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






35. 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.






36. Time for an associated tag to be read






37. Smart cards - smart label - etc.






38. 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%)






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






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






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






42. 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...






43. Inductive coupling and passive backscatter (capacitive coupling)






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






45. 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






46. 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)






47. 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






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






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. Inductive coupling and passive backscatter (capacitive coupling)