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






2. UHF and microwave passive tags






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






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






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






6. 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.






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






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






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






10. 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






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






12. 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%)






13. Continuous web - no adhesive






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






15. Time for an associated tag to be read






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






17. Dead zones that surround protrusions in antenna footprint






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






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






20. Die-cut web adhesive - paper face






21. 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






22. 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






23. Brains of the RFID tag






24. 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






25. 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






26. 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






27. 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






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






29. Inductive coupling and passive backscatter (capacitive coupling)






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






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






32. 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






33. 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






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






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






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






37. '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






38. The act of writing the tag data by reader






39. IC Chip - Antenna/Inductor - Power Source






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






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






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






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






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






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






46. 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






47. 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






48. 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






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






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