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. Serves as writable or non-writable data storage






2. 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






3. 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






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. 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






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






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. Inductive coupling and passive backscatter (capacitive coupling)






9. 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






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






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






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






13. 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






14. 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






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






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






18. 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






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






20. IC Chip - Antenna/Inductor - Power Source






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






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






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






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






25. 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






26. 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%)






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






28. Brains of the RFID tag






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






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






31. 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






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






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






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






35. 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






36. Inductive coupling and passive backscatter (capacitive coupling)






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






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






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






40. 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






41. UHF and microwave passive tags






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






43. 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.






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






45. The act of writing the tag data by reader






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






47. 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






48. Receives signal from reader and radiates a response back to the reader - LF or HF: induction coil - UHF or Microwave Frequency: printed antennas






49. Continuous web - no adhesive






50. 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