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 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






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






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






4. 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






5. 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






6. 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






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






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






9. 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






10. Die-cut web with adhesive - film face






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






12. Dead zones that surround protrusions in antenna footprint






13. 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






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






15. Smart cards - smart label - etc.






16. Time for an associated tag to be read






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






18. Serves as writable or non-writable data storage






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






20. Die-cut web adhesive - paper face






21. Inductive coupling and passive backscatter (capacitive coupling)






22. 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






23. Optical and RFID hybrid






24. Inductive coupling and passive backscatter (capacitive coupling)






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






26. 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






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






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






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






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






31. 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%)






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






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






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






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






36. '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






37. The act of writing the tag data by reader






38. Brains of the RFID tag






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






40. IC Chip - Antenna/Inductor - Power Source






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






42. 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






43. 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...






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






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






46. 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.






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






48. 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






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






50. UHF and microwave passive tags