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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. 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






2. 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






3. 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)






4. 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






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






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






7. 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...






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






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






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






11. 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






12. 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






13. Brains of the RFID tag






14. Inductive coupling and passive backscatter (capacitive coupling)






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






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. 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






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






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






20. Serves as writable or non-writable data storage






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






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






23. 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






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






25. Continuous web - no adhesive






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






27. 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






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






29. 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






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






31. 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






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






33. Die-cut web with adhesive - film face






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






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






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






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






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






40. 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.






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






42. 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






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






44. Optical and RFID hybrid






45. '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






46. 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






47. 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






48. 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






49. Die-cut web adhesive - paper face






50. Inductive coupling and passive backscatter (capacitive coupling)






Can you answer 50 questions in 15 minutes?



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