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






2. Dead zones that surround protrusions in antenna footprint






3. Die-cut web adhesive - paper face






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






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






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






7. 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






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






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






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






13. Inductive coupling and passive backscatter (capacitive coupling)






14. 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%)






15. 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






16. 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.






17. Smart cards - smart label - etc.






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






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






20. 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...






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






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






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






24. '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






25. Serves as writable or non-writable data storage






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






27. 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






28. 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






29. Brains of the RFID tag






30. 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






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






32. 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






33. 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






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






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






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






37. 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






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






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






40. Inductive coupling and passive backscatter (capacitive coupling)






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. 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






43. Time for an associated tag to be read






44. 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






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






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






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






48. Optical and RFID hybrid






49. IC Chip - Antenna/Inductor - Power Source






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