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






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






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






4. 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.






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






6. UHF and microwave passive tags






7. When two waves (in phase) impose on each other and enhance the original signal and give rise to protrusions






8. Die-cut web adhesive - paper face






9. 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






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






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






12. Image "burned" into photopolymer layer. All copper removed except where image was burned. Copper antenna goes through additional processes to protect from oxidation






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






14. 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






15. Inductive coupling and passive backscatter (capacitive coupling)






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






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






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






19. 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






20. 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






21. 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






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






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






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






25. 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






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






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






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






29. The act of writing the tag data by reader






30. Continuous web - no adhesive






31. 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






32. 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






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






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






35. 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






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






37. '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






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






39. 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%)






40. 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






41. 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






42. 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






43. Time for an associated tag to be read






44. Optical and RFID hybrid






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






46. IC Chip - Antenna/Inductor - Power Source






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






48. 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






49. Serves as writable or non-writable data storage






50. Inductive coupling and passive backscatter (capacitive coupling)