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






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






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






4. 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






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






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






7. 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






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






9. Optical and RFID hybrid






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






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






12. '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






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






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






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






16. 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






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






18. 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






19. 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






20. 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






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






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






23. Brains of the RFID tag






24. 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






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






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






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






28. Time for an associated tag to be read






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






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






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






32. 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






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






34. 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






35. UHF and microwave passive tags






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






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






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. Measurement of power for radiation of antenna used in Europe






40. 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






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






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






43. 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






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. The act of writing the tag data by reader






46. 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






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






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






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






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







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Can you answer 50 questions in 15 minutes?


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