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 Europe






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






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






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. IC Chip - Antenna/Inductor - Power Source






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






7. Time for an associated tag to be read






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






9. UHF and microwave passive tags






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






11. Brains of the RFID tag






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






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






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






15. 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






16. 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






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






18. 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






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






20. Die-cut web adhesive - paper face






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






22. 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






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






24. 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






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






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






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






28. '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






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






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






31. 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)






32. Smart cards - smart label - etc.






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






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






36. 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






37. 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






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






39. 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%)






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






41. 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






42. Inductive coupling and passive backscatter (capacitive coupling)






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






44. 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






45. 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






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






47. 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






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






49. The act of writing the tag data by reader






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