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. IC Chip - Antenna/Inductor - Power Source






2. Open image in meshed screens. Conductive ink "squeezed" thru open mesh.






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






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






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






6. 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%)






7. Time for an associated tag to be read






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






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






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






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






12. Inductive coupling and passive backscatter (capacitive coupling)






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






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






15. 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






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






17. Optical and RFID hybrid






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






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






20. 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






21. 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






22. Dead zones that surround protrusions in antenna footprint






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






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






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






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






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






28. 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






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






30. 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






31. 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.






32. '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






33. 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






34. UHF and microwave passive tags






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






36. 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






37. 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






38. Continuous web - no adhesive






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






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






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






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






43. 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






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. Standards = EPC global & ISO 18000 - Different Organizations






46. 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...






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






49. Smart cards - smart label - etc.






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