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






2. The act of writing the tag data by reader






3. Inductive coupling and passive backscatter (capacitive coupling)






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






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






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






8. Dead zones that surround protrusions in antenna footprint






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






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






11. Die-cut web adhesive - paper face






12. Time for an associated tag to be read






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






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






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






16. UHF and microwave passive tags






17. 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.






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






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






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






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






22. Inductive coupling and passive backscatter (capacitive coupling)






23. 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






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






25. 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






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






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. Serves as writable or non-writable data storage






29. Brains of the RFID tag






30. 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






31. 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






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






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






34. Die-cut web with adhesive - film face






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






36. 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






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






38. 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






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






40. Fixed to meet FCC and other regulatory requirements. The signal can be decreased or attenuated to limit the tag read window or aim it only at tags you want to read






41. 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






42. 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






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






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






45. 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






46. 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






47. IC Chip - Antenna/Inductor - Power Source






48. Optical and RFID hybrid






49. 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






50. 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






Can you answer 50 questions in 15 minutes?



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