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






2. Inductive coupling and passive backscatter (capacitive coupling)






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






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






5. IC Chip - Antenna/Inductor - Power Source






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






7. 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






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






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






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






11. 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.






12. 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






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






14. Similar to guessing a number made of 1's and 0's by guessing each number one at a time






15. Die-cut web with adhesive - film face






16. 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






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






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






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






21. Broadcasts the reader transmitter's RF signal into its surroundings and receives tag responses on the reader's behalf. Therefore - proper positioning of these (NOT THE READERS) is essential for good read accuracy






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






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






24. Die-cut web adhesive - paper face






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






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






27. Inductive coupling and passive backscatter (capacitive coupling)






28. 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






29. 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






30. 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






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






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






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






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






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






36. 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






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






38. 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






39. 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






40. 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






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






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






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






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






45. 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%)






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






47. 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...






48. 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






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






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