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






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






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






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






5. Optical and RFID hybrid






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






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






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






9. Dead zones that surround protrusions in antenna footprint






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






11. 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






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






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






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






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






16. 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






17. 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






18. 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






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






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






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






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






23. Serves as writable or non-writable data storage






24. Inductive coupling and passive backscatter (capacitive coupling)






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






26. The act of writing the tag data by reader






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. 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






29. 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






30. Inductive coupling and passive backscatter (capacitive coupling)






31. 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






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






33. 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






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






35. '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






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






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






38. 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






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






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






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






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. Die-cut web with adhesive - film face






44. Continuous web - no adhesive






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






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






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






48. 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.






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






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