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






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






3. 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






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






5. 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%)






6. More than one tag tries to respond to a reader at the same time.






7. 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






8. 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






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






10. Interprets the signal received from reader and controls memory storage and retrieval






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






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






13. Die-cut web with adhesive - film face






14. Smart cards - smart label - etc.






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






16. IC Chip - Antenna/Inductor - Power Source






17. 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






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






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






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






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






22. UHF and microwave passive tags






23. Inductive coupling and passive backscatter (capacitive coupling)






24. 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.






25. 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






26. 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






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






28. 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...






29. '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






30. Serves as writable or non-writable data storage






31. Dead zones that surround protrusions in antenna footprint






32. Brains of the RFID tag






33. 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






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






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






36. 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)






37. 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






38. 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






39. Continuous web - no adhesive






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






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






42. 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






43. The act of writing the tag data by reader






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






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






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






47. 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






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






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






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