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






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






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






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






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






6. 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






7. 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






8. IC Chip - Antenna/Inductor - Power Source






9. Inductive coupling and passive backscatter (capacitive coupling)






10. 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






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






12. Dead zones that surround protrusions in antenna footprint






13. UHF and microwave passive tags






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






15. 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...






16. 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






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






18. 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






19. Die-cut web with adhesive - film face






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






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






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






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






24. 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






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






26. 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






27. 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






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






29. 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






30. 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






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






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






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






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






35. Time for an associated tag to be read






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






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






38. 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%)






39. 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






40. Serves as writable or non-writable data storage






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






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






43. Inductive coupling and passive backscatter (capacitive coupling)






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






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






46. 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






47. 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.






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






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






50. 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