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. 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






2. Serves as writable or non-writable data storage






3. Inductive coupling and passive backscatter (capacitive coupling)






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






5. 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...






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






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






8. 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






9. 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






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






11. 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






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






13. 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






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






15. Dead zones that surround protrusions in antenna footprint






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






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






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






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






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






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






22. 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.






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






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






25. The act of writing the tag data by reader






26. IC Chip - Antenna/Inductor - Power Source






27. Brains of the RFID tag






28. 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.






29. 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






30. 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






31. 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






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






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






34. UHF and microwave passive tags






35. 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






36. Smart cards - smart label - etc.






37. 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






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






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






40. Die-cut web with adhesive - film face






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






42. 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






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






44. RF energy radiates from antenna in circular fashion - Slightly reduced range - Provides greater tolerance to tags in various orientation and bounce off of and bypass obstructions - 2 E-field components that are equal in magnitude - 90 degrees out of






45. 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






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






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






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






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






50. 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