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






2. 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...






3. 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






4. Brains of the RFID tag






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






6. 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






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






8. 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)






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






10. 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






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






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






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






14. 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






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






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






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






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






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






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






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






22. 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






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






24. Die-cut web adhesive - paper face






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






26. IC Chip - Antenna/Inductor - Power Source






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






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






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






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






31. Time for an associated tag to be read






32. 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.






33. '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






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






35. Serves as writable or non-writable data storage






36. 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






37. Dead zones that surround protrusions in antenna footprint






38. 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






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






40. Smart cards - smart label - etc.






41. Inductive coupling and passive backscatter (capacitive coupling)






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






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






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






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






46. 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






47. 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






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






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






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