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






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






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






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. 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






6. Dead zones that surround protrusions in antenna footprint






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






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






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






10. Inductive coupling and passive backscatter (capacitive coupling)






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






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






13. 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






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






15. 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...






16. Time for an associated tag to be read






17. IC Chip - Antenna/Inductor - Power Source






18. 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)






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






20. 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






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






22. UHF and microwave passive tags






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






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






25. 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






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






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






28. Continuous web - no adhesive






29. 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






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






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






32. 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.






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






34. 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






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






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






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






38. Die-cut web adhesive - paper face






39. Optical and RFID hybrid






40. 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






41. 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.






42. 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%)






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






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






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






46. The act of writing the tag data by reader






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






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






49. 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






50. '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