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. 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






2. 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)






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






4. Dead zones that surround protrusions in antenna footprint






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






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






7. Time for an associated tag to be read






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






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






10. 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






11. 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






12. Serves as writable or non-writable data storage






13. 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.






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






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






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






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






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. These are categorized into Aloha based protocols and tree based






20. 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






21. 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...






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






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






24. '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






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






26. The act of writing the tag data by reader






27. IC Chip - Antenna/Inductor - Power Source






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






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






30. Smart cards - smart label - etc.






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






32. 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






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






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






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






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






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






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






39. 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






40. 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






41. 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






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






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






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






45. Brains of the RFID tag






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






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






48. 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






49. 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






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