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






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






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






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






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






6. Optical and RFID hybrid






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






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






9. 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%)






10. 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






11. 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)






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






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






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






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






16. 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






17. 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






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






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






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






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






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






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






24. Time for an associated tag to be read






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






26. Smart cards - smart label - etc.






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






28. 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...






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






30. 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






31. Die-cut web adhesive - paper face






32. Continuous web - no adhesive






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. 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






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






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






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






38. 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






39. UHF and microwave passive tags






40. 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






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






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






43. Serves as writable or non-writable data storage






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






45. 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.






46. 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






47. Used to transmit AC power and the clock cycle via its antennas to the tags in its read zone






48. 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






49. IC Chip - Antenna/Inductor - Power Source






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