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






2. 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






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






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






6. 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...






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






8. 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






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






10. Brains of the RFID tag






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






12. Inductive coupling and passive backscatter (capacitive coupling)






13. 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)






14. Die-cut web adhesive - paper face






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






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






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






18. Optical and RFID hybrid






19. 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.






20. 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






21. Dead zones that surround protrusions in antenna footprint






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






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






24. Smart cards - smart label - etc.






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






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






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






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






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






30. 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.






31. 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






32. 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






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






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






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






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






37. Serves as writable or non-writable data storage






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






39. IC Chip - Antenna/Inductor - Power Source






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






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






42. UHF and microwave passive tags






43. Time for an associated tag to be read






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






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






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






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






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






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






50. 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%)







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