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. 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.






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






3. 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%)






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






5. 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






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






7. Time for an associated tag to be read






8. Inductive coupling and passive backscatter (capacitive coupling)






9. Optical and RFID hybrid






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






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






13. Inductive coupling and passive backscatter (capacitive coupling)






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






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






16. 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






17. 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






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






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






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






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






22. 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...






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






24. 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






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






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






27. 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






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






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






30. 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






31. IC Chip - Antenna/Inductor - Power Source






32. Continuous web - no adhesive






33. 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.






34. 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






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






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






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






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






39. Dead zones that surround protrusions in antenna footprint






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






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






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






43. 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)






44. 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






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






46. Smart cards - smart label - etc.






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






48. The act of writing the tag data by reader






49. Process of creating a tag and uniquely associating it with an object






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