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






2. IC Chip - Antenna/Inductor - Power Source






3. 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






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






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






6. 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






7. Die-cut web adhesive - paper face






8. 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






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






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






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






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






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






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






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






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






17. Die-cut web with adhesive - film face






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






19. 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






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






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






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






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






24. 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...






25. Brains of the RFID tag






26. Smart cards - smart label - etc.






27. 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






28. 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






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






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






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






32. 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)






33. 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%)






34. Dead zones that surround protrusions in antenna footprint






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






36. 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.






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






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






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






40. 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






41. 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






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






43. 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






44. Optical and RFID hybrid






45. 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






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






47. Serves as writable or non-writable data storage






48. Inductive coupling and passive backscatter (capacitive coupling)






49. 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






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