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. Measurement of power for radiation of antenna used in US






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






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. Dead zones that surround protrusions in antenna footprint






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






6. Brains of the RFID tag






7. 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






8. 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






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






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






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






12. 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






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






14. '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






15. Optical and RFID hybrid






16. Continuous web - no adhesive






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






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






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






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






21. 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






22. 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)






23. 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






24. 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






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






26. IC Chip - Antenna/Inductor - Power Source






27. These are categorized into Aloha based protocols and tree based






28. 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.






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






30. Die-cut web with adhesive - film face






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






32. Time for an associated tag to be read






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






34. 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






35. UHF and microwave passive tags






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






37. Serves as writable or non-writable data storage






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






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






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






42. Die-cut web adhesive - paper face






43. 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






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






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






46. 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






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






48. 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






49. The act of writing the tag data by reader






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