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 reflection of reader antenna signals on RF-opaque causes this






2. 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.






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






4. IC Chip - Antenna/Inductor - Power Source






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






6. 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






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






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






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






10. Smart cards - smart label - etc.






11. 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%)






12. Serves as writable or non-writable data storage






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. 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






15. 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






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






17. UHF and microwave passive tags






18. 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






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






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






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






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






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






24. 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






25. Time for an associated tag to be read






26. 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.






27. 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






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






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






30. 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






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






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






33. Uses a serial communication link to communicate with an application - Reader is physically connected to a computer's serial port using an RS-232 or RS-485 serial connection. Both of these connections have an upper limit on the cable length that can b






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






35. Die-cut web with adhesive - film face






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






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






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






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






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






41. 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






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






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






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






45. Optical and RFID hybrid






46. Die-cut web adhesive - paper face






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






48. Continuous web - no adhesive






49. 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






50. 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