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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. 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






2. 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






3. 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






4. 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






5. 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.






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






7. UHF and microwave passive tags






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






9. Optical and RFID hybrid






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






11. Time for an associated tag to be read






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






13. Dead zones that surround protrusions in antenna footprint






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






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






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






17. 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






18. 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






19. 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






20. 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






21. The act of writing the tag data by reader






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






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






24. Inductive coupling and passive backscatter (capacitive coupling)






25. IC Chip - Antenna/Inductor - Power Source






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






27. '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






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






29. 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






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






31. Die-cut web with adhesive - film face






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






33. 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






34. 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






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






36. 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






37. 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...






38. 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.






39. Continuous web - no adhesive






40. More than one tag tries to respond to a reader at the same time.






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






42. Die-cut web adhesive - paper face






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






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. Measurement of power for radiation of antenna used in US






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






47. 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






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






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






50. Inductive coupling and passive backscatter (capacitive coupling)






Can you answer 50 questions in 15 minutes?



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