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. 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%)






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






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






4. '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






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






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






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






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






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






10. Dead zones that surround protrusions in antenna footprint






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






12. 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






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






14. 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






15. 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






16. The act of writing the tag data by reader






17. 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...






18. Serves as writable or non-writable data storage






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






20. Smart cards - smart label - etc.






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






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






23. 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






24. Inductive coupling and passive backscatter (capacitive coupling)






25. Die-cut web with adhesive - film face






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






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






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






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






30. Continuous web - no adhesive






31. 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






32. Inductive coupling and passive backscatter (capacitive coupling)






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






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






35. 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






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






37. Brains of the RFID tag






38. 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






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






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






41. 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






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






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






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






45. 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






46. 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






47. 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






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






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






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