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. 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






3. 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






4. Serves as writable or non-writable data storage






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






6. Time for an associated tag to be read






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






8. 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)






9. 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






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






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






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






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






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






15. 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.






16. 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...






17. Die-cut web with adhesive - film face






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






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






20. 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






21. 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






22. Dead zones that surround protrusions in antenna footprint






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






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






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






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






27. 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






28. 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






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






30. 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






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






32. 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






33. Continuous web - no adhesive






34. 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






35. 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






36. 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%)






37. Die-cut web adhesive - paper face






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






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






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






41. 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






42. 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






43. Smart cards - smart label - etc.






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






45. 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.






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






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






48. Optical and RFID hybrid






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