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






2. Optical and RFID hybrid






3. 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






4. Die-cut web adhesive - paper face






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






6. 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






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






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






9. Inductive coupling and passive backscatter (capacitive coupling)






10. 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






11. Continuous web - no adhesive






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






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






15. 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






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






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






18. 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






19. 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)






20. '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






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






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






23. 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






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






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






26. 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...






27. 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






28. Serves as writable or non-writable data storage






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






30. 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






31. 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






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






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






34. 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






35. 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.






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






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






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






39. Smart cards - smart label - etc.






40. UHF and microwave passive tags






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






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






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






44. 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






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






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






47. 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.






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






49. 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






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