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






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






3. Inductive coupling and passive backscatter (capacitive coupling)






4. Serves as writable or non-writable data storage






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






6. Continuous web - no adhesive






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






8. Brains of the RFID tag






9. 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






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






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






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






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






14. 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.






15. Die-cut web with adhesive - film face






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






17. 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






18. 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...






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






20. Die-cut web adhesive - paper face






21. LF and HF passive tags - Current flowing through a conductor generates a magnetic field around the conductor and vice versa - Readers antenna uses current to generate magnetic field - Tag's antenna when exposed to the magnetic field generates the cur






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






23. 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






24. 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






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






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






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






28. 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






29. 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






30. 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






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






32. 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






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






34. 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






35. UHF and microwave passive tags






36. Smart cards - smart label - etc.






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






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






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






40. 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






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






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






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






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






45. 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






46. 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






47. IC Chip - Antenna/Inductor - Power Source






48. Dead zones that surround protrusions in antenna footprint






49. 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






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